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41700e355f
weston/libweston/gl-renderer.c
Miguel A. Vico 41700e355f gl-renderer: Add <platform_attribs> param to gl_renderer_display_create 
This change adds <platform_attribs> parameter to
gl_renderer_display_create() in case we ever want to pass non-NULL.

Signed-off-by: Miguel A Vico Moya <mvicomoya@nvidia.com>
Reviewed-by: Andy Ritger <aritger@nvidia.com>
Reviewed-by: James Jones <jajones@nvidia.com>
[Pekka: removed notes about EGLOutput]
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
2016-11-07 17:06:44 +02:00

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/*
* Copyright © 2012 Intel Corporation
* Copyright © 2015 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <float.h>
#include <assert.h>
#include <linux/input.h>
#include <drm_fourcc.h>
#include "gl-renderer.h"
#include "vertex-clipping.h"
#include "linux-dmabuf.h"
#include "linux-dmabuf-unstable-v1-server-protocol.h"
#include "shared/helpers.h"
#include "shared/platform.h"
#include "weston-egl-ext.h"
struct gl_shader {
GLuint program;
GLuint vertex_shader, fragment_shader;
GLint proj_uniform;
GLint tex_uniforms[3];
GLint alpha_uniform;
GLint color_uniform;
const char *vertex_source, *fragment_source;
};
#define BUFFER_DAMAGE_COUNT 2
enum gl_border_status {
BORDER_STATUS_CLEAN = 0,
BORDER_TOP_DIRTY = 1 << GL_RENDERER_BORDER_TOP,
BORDER_LEFT_DIRTY = 1 << GL_RENDERER_BORDER_LEFT,
BORDER_RIGHT_DIRTY = 1 << GL_RENDERER_BORDER_RIGHT,
BORDER_BOTTOM_DIRTY = 1 << GL_RENDERER_BORDER_BOTTOM,
BORDER_ALL_DIRTY = 0xf,
BORDER_SIZE_CHANGED = 0x10
};
struct gl_border_image {
GLuint tex;
int32_t width, height;
int32_t tex_width;
void *data;
};
struct gl_output_state {
EGLSurface egl_surface;
pixman_region32_t buffer_damage[BUFFER_DAMAGE_COUNT];
int buffer_damage_index;
enum gl_border_status border_damage[BUFFER_DAMAGE_COUNT];
struct gl_border_image borders[4];
enum gl_border_status border_status;
struct weston_matrix output_matrix;
};
enum buffer_type {
BUFFER_TYPE_NULL,
BUFFER_TYPE_SOLID, /* internal solid color surfaces without a buffer */
BUFFER_TYPE_SHM,
BUFFER_TYPE_EGL
};
struct gl_renderer;
struct egl_image {
struct gl_renderer *renderer;
EGLImageKHR image;
int refcount;
};
enum import_type {
IMPORT_TYPE_INVALID,
IMPORT_TYPE_DIRECT,
IMPORT_TYPE_GL_CONVERSION
};
struct dmabuf_image {
struct linux_dmabuf_buffer *dmabuf;
int num_images;
struct egl_image *images[3];
struct wl_list link;
enum import_type import_type;
GLenum target;
struct gl_shader *shader;
};
struct yuv_plane_descriptor {
int width_divisor;
int height_divisor;
uint32_t format;
int plane_index;
};
struct yuv_format_descriptor {
uint32_t format;
int input_planes;
int output_planes;
int texture_type;
struct yuv_plane_descriptor plane[4];
};
struct gl_surface_state {
GLfloat color[4];
struct gl_shader *shader;
GLuint textures[3];
int num_textures;
bool needs_full_upload;
pixman_region32_t texture_damage;
/* These are only used by SHM surfaces to detect when we need
* to do a full upload to specify a new internal texture
* format */
GLenum gl_format[3];
GLenum gl_pixel_type;
struct egl_image* images[3];
GLenum target;
int num_images;
struct weston_buffer_reference buffer_ref;
enum buffer_type buffer_type;
int pitch; /* in pixels */
int height; /* in pixels */
int y_inverted;
/* Extension needed for SHM YUV texture */
int offset[3]; /* offset per plane */
int hvsub[3]; /* horizontal vertical subsampling per plane */
struct weston_surface *surface;
struct wl_listener surface_destroy_listener;
struct wl_listener renderer_destroy_listener;
};
struct gl_renderer {
struct weston_renderer base;
int fragment_shader_debug;
int fan_debug;
struct weston_binding *fragment_binding;
struct weston_binding *fan_binding;
EGLDisplay egl_display;
EGLContext egl_context;
EGLConfig egl_config;
EGLSurface dummy_surface;
struct wl_array vertices;
struct wl_array vtxcnt;
PFNGLEGLIMAGETARGETTEXTURE2DOESPROC image_target_texture_2d;
PFNEGLCREATEIMAGEKHRPROC create_image;
PFNEGLDESTROYIMAGEKHRPROC destroy_image;
PFNEGLSWAPBUFFERSWITHDAMAGEEXTPROC swap_buffers_with_damage;
PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC create_platform_window;
int has_unpack_subimage;
PFNEGLBINDWAYLANDDISPLAYWL bind_display;
PFNEGLUNBINDWAYLANDDISPLAYWL unbind_display;
PFNEGLQUERYWAYLANDBUFFERWL query_buffer;
int has_bind_display;
int has_egl_image_external;
int has_egl_buffer_age;
int has_configless_context;
int has_surfaceless_context;
int has_dmabuf_import;
struct wl_list dmabuf_images;
int has_gl_texture_rg;
struct gl_shader texture_shader_rgba;
struct gl_shader texture_shader_rgbx;
struct gl_shader texture_shader_egl_external;
struct gl_shader texture_shader_y_uv;
struct gl_shader texture_shader_y_u_v;
struct gl_shader texture_shader_y_xuxv;
struct gl_shader invert_color_shader;
struct gl_shader solid_shader;
struct gl_shader *current_shader;
struct wl_signal destroy_signal;
struct wl_listener output_destroy_listener;
};
static PFNEGLGETPLATFORMDISPLAYEXTPROC get_platform_display = NULL;
static inline const char *
dump_format(uint32_t format, char out[4])
{
#if BYTE_ORDER == BIG_ENDIAN
format = __builtin_bswap32(format);
#endif
memcpy(out, &format, 4);
return out;
}
static inline struct gl_output_state *
get_output_state(struct weston_output *output)
{
return (struct gl_output_state *)output->renderer_state;
}
static int
gl_renderer_create_surface(struct weston_surface *surface);
static inline struct gl_surface_state *
get_surface_state(struct weston_surface *surface)
{
if (!surface->renderer_state)
gl_renderer_create_surface(surface);
return (struct gl_surface_state *)surface->renderer_state;
}
static inline struct gl_renderer *
get_renderer(struct weston_compositor *ec)
{
return (struct gl_renderer *)ec->renderer;
}
static struct egl_image*
egl_image_create(struct gl_renderer *gr, EGLenum target,
EGLClientBuffer buffer, const EGLint *attribs)
{
struct egl_image *img;
img = zalloc(sizeof *img);
img->renderer = gr;
img->refcount = 1;
img->image = gr->create_image(gr->egl_display, EGL_NO_CONTEXT,
target, buffer, attribs);
if (img->image == EGL_NO_IMAGE_KHR) {
free(img);
return NULL;
}
return img;
}
static struct egl_image*
egl_image_ref(struct egl_image *image)
{
image->refcount++;
return image;
}
static int
egl_image_unref(struct egl_image *image)
{
struct gl_renderer *gr = image->renderer;
assert(image->refcount > 0);
image->refcount--;
if (image->refcount > 0)
return image->refcount;
gr->destroy_image(gr->egl_display, image->image);
free(image);
return 0;
}
static struct dmabuf_image*
dmabuf_image_create(void)
{
struct dmabuf_image *img;
img = zalloc(sizeof *img);
wl_list_init(&img->link);
return img;
}
static void
dmabuf_image_destroy(struct dmabuf_image *image)
{
int i;
for (i = 0; i < image->num_images; ++i)
egl_image_unref(image->images[i]);
if (image->dmabuf)
linux_dmabuf_buffer_set_user_data(image->dmabuf, NULL, NULL);
wl_list_remove(&image->link);
}
static const char *
egl_error_string(EGLint code)
{
#define MYERRCODE(x) case x: return #x;
switch (code) {
MYERRCODE(EGL_SUCCESS)
MYERRCODE(EGL_NOT_INITIALIZED)
MYERRCODE(EGL_BAD_ACCESS)
MYERRCODE(EGL_BAD_ALLOC)
MYERRCODE(EGL_BAD_ATTRIBUTE)
MYERRCODE(EGL_BAD_CONTEXT)
MYERRCODE(EGL_BAD_CONFIG)
MYERRCODE(EGL_BAD_CURRENT_SURFACE)
MYERRCODE(EGL_BAD_DISPLAY)
MYERRCODE(EGL_BAD_SURFACE)
MYERRCODE(EGL_BAD_MATCH)
MYERRCODE(EGL_BAD_PARAMETER)
MYERRCODE(EGL_BAD_NATIVE_PIXMAP)
MYERRCODE(EGL_BAD_NATIVE_WINDOW)
MYERRCODE(EGL_CONTEXT_LOST)
default:
return "unknown";
}
#undef MYERRCODE
}
static void
gl_renderer_print_egl_error_state(void)
{
EGLint code;
code = eglGetError();
weston_log("EGL error state: %s (0x%04lx)\n",
egl_error_string(code), (long)code);
}
#define max(a, b) (((a) > (b)) ? (a) : (b))
#define min(a, b) (((a) > (b)) ? (b) : (a))
/*
* Compute the boundary vertices of the intersection of the global coordinate
* aligned rectangle 'rect', and an arbitrary quadrilateral produced from
* 'surf_rect' when transformed from surface coordinates into global coordinates.
* The vertices are written to 'ex' and 'ey', and the return value is the
* number of vertices. Vertices are produced in clockwise winding order.
* Guarantees to produce either zero vertices, or 3-8 vertices with non-zero
* polygon area.
*/
static int
calculate_edges(struct weston_view *ev, pixman_box32_t *rect,
pixman_box32_t *surf_rect, GLfloat *ex, GLfloat *ey)
{
struct clip_context ctx;
int i, n;
GLfloat min_x, max_x, min_y, max_y;
struct polygon8 surf = {
{ surf_rect->x1, surf_rect->x2, surf_rect->x2, surf_rect->x1 },
{ surf_rect->y1, surf_rect->y1, surf_rect->y2, surf_rect->y2 },
4
};
ctx.clip.x1 = rect->x1;
ctx.clip.y1 = rect->y1;
ctx.clip.x2 = rect->x2;
ctx.clip.y2 = rect->y2;
/* transform surface to screen space: */
for (i = 0; i < surf.n; i++)
weston_view_to_global_float(ev, surf.x[i], surf.y[i],
&surf.x[i], &surf.y[i]);
/* find bounding box: */
min_x = max_x = surf.x[0];
min_y = max_y = surf.y[0];
for (i = 1; i < surf.n; i++) {
min_x = min(min_x, surf.x[i]);
max_x = max(max_x, surf.x[i]);
min_y = min(min_y, surf.y[i]);
max_y = max(max_y, surf.y[i]);
}
/* First, simple bounding box check to discard early transformed
* surface rects that do not intersect with the clip region:
*/
if ((min_x >= ctx.clip.x2) || (max_x <= ctx.clip.x1) ||
(min_y >= ctx.clip.y2) || (max_y <= ctx.clip.y1))
return 0;
/* Simple case, bounding box edges are parallel to surface edges,
* there will be only four edges. We just need to clip the surface
* vertices to the clip rect bounds:
*/
if (!ev->transform.enabled)
return clip_simple(&ctx, &surf, ex, ey);
/* Transformed case: use a general polygon clipping algorithm to
* clip the surface rectangle with each side of 'rect'.
* The algorithm is Sutherland-Hodgman, as explained in
* http://www.codeguru.com/cpp/misc/misc/graphics/article.php/c8965/Polygon-Clipping.htm
* but without looking at any of that code.
*/
n = clip_transformed(&ctx, &surf, ex, ey);
if (n < 3)
return 0;
return n;
}
static bool
merge_down(pixman_box32_t *a, pixman_box32_t *b, pixman_box32_t *merge)
{
if (a->x1 == b->x1 && a->x2 == b->x2 && a->y1 == b->y2) {
merge->x1 = a->x1;
merge->x2 = a->x2;
merge->y1 = b->y1;
merge->y2 = a->y2;
return true;
}
return false;
}
static int
compress_bands(pixman_box32_t *inrects, int nrects,
pixman_box32_t **outrects)
{
bool merged = false;
pixman_box32_t *out, merge_rect;
int i, j, nout;
if (!nrects) {
*outrects = NULL;
return 0;
}
/* nrects is an upper bound - we're not too worried about
* allocating a little extra
*/
out = malloc(sizeof(pixman_box32_t) * nrects);
out[0] = inrects[0];
nout = 1;
for (i = 1; i < nrects; i++) {
for (j = 0; j < nout; j++) {
merged = merge_down(&inrects[i], &out[j], &merge_rect);
if (merged) {
out[j] = merge_rect;
break;
}
}
if (!merged) {
out[nout] = inrects[i];
nout++;
}
}
*outrects = out;
return nout;
}
static int
texture_region(struct weston_view *ev, pixman_region32_t *region,
pixman_region32_t *surf_region)
{
struct gl_surface_state *gs = get_surface_state(ev->surface);
struct weston_compositor *ec = ev->surface->compositor;
struct gl_renderer *gr = get_renderer(ec);
GLfloat *v, inv_width, inv_height;
unsigned int *vtxcnt, nvtx = 0;
pixman_box32_t *rects, *surf_rects;
pixman_box32_t *raw_rects;
int i, j, k, nrects, nsurf, raw_nrects;
bool used_band_compression;
raw_rects = pixman_region32_rectangles(region, &raw_nrects);
surf_rects = pixman_region32_rectangles(surf_region, &nsurf);
if (raw_nrects < 4) {
used_band_compression = false;
nrects = raw_nrects;
rects = raw_rects;
} else {
nrects = compress_bands(raw_rects, raw_nrects, &rects);
used_band_compression = true;
}
/* worst case we can have 8 vertices per rect (ie. clipped into
* an octagon):
*/
v = wl_array_add(&gr->vertices, nrects * nsurf * 8 * 4 * sizeof *v);
vtxcnt = wl_array_add(&gr->vtxcnt, nrects * nsurf * sizeof *vtxcnt);
inv_width = 1.0 / gs->pitch;
inv_height = 1.0 / gs->height;
for (i = 0; i < nrects; i++) {
pixman_box32_t *rect = &rects[i];
for (j = 0; j < nsurf; j++) {
pixman_box32_t *surf_rect = &surf_rects[j];
GLfloat sx, sy, bx, by;
GLfloat ex[8], ey[8]; /* edge points in screen space */
int n;
/* The transformed surface, after clipping to the clip region,
* can have as many as eight sides, emitted as a triangle-fan.
* The first vertex in the triangle fan can be chosen arbitrarily,
* since the area is guaranteed to be convex.
*
* If a corner of the transformed surface falls outside of the
* clip region, instead of emitting one vertex for the corner
* of the surface, up to two are emitted for two corresponding
* intersection point(s) between the surface and the clip region.
*
* To do this, we first calculate the (up to eight) points that
* form the intersection of the clip rect and the transformed
* surface.
*/
n = calculate_edges(ev, rect, surf_rect, ex, ey);
if (n < 3)
continue;
/* emit edge points: */
for (k = 0; k < n; k++) {
weston_view_from_global_float(ev, ex[k], ey[k],
&sx, &sy);
/* position: */
*(v++) = ex[k];
*(v++) = ey[k];
/* texcoord: */
weston_surface_to_buffer_float(ev->surface,
sx, sy,
&bx, &by);
*(v++) = bx * inv_width;
if (gs->y_inverted) {
*(v++) = by * inv_height;
} else {
*(v++) = (gs->height - by) * inv_height;
}
}
vtxcnt[nvtx++] = n;
}
}
if (used_band_compression)
free(rects);
return nvtx;
}
static void
triangle_fan_debug(struct weston_view *view, int first, int count)
{
struct weston_compositor *compositor = view->surface->compositor;
struct gl_renderer *gr = get_renderer(compositor);
int i;
GLushort *buffer;
GLushort *index;
int nelems;
static int color_idx = 0;
static const GLfloat color[][4] = {
{ 1.0, 0.0, 0.0, 1.0 },
{ 0.0, 1.0, 0.0, 1.0 },
{ 0.0, 0.0, 1.0, 1.0 },
{ 1.0, 1.0, 1.0, 1.0 },
};
nelems = (count - 1 + count - 2) * 2;
buffer = malloc(sizeof(GLushort) * nelems);
index = buffer;
for (i = 1; i < count; i++) {
*index++ = first;
*index++ = first + i;
}
for (i = 2; i < count; i++) {
*index++ = first + i - 1;
*index++ = first + i;
}
glUseProgram(gr->solid_shader.program);
glUniform4fv(gr->solid_shader.color_uniform, 1,
color[color_idx++ % ARRAY_LENGTH(color)]);
glDrawElements(GL_LINES, nelems, GL_UNSIGNED_SHORT, buffer);
glUseProgram(gr->current_shader->program);
free(buffer);
}
static void
repaint_region(struct weston_view *ev, pixman_region32_t *region,
pixman_region32_t *surf_region)
{
struct weston_compositor *ec = ev->surface->compositor;
struct gl_renderer *gr = get_renderer(ec);
GLfloat *v;
unsigned int *vtxcnt;
int i, first, nfans;
/* The final region to be painted is the intersection of
* 'region' and 'surf_region'. However, 'region' is in the global
* coordinates, and 'surf_region' is in the surface-local
* coordinates. texture_region() will iterate over all pairs of
* rectangles from both regions, compute the intersection
* polygon for each pair, and store it as a triangle fan if
* it has a non-zero area (at least 3 vertices, actually).
*/
nfans = texture_region(ev, region, surf_region);
v = gr->vertices.data;
vtxcnt = gr->vtxcnt.data;
/* position: */
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
glEnableVertexAttribArray(0);
/* texcoord: */
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
glEnableVertexAttribArray(1);
for (i = 0, first = 0; i < nfans; i++) {
glDrawArrays(GL_TRIANGLE_FAN, first, vtxcnt[i]);
if (gr->fan_debug)
triangle_fan_debug(ev, first, vtxcnt[i]);
first += vtxcnt[i];
}
glDisableVertexAttribArray(1);
glDisableVertexAttribArray(0);
gr->vertices.size = 0;
gr->vtxcnt.size = 0;
}
static int
use_output(struct weston_output *output)
{
static int errored;
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
EGLBoolean ret;
ret = eglMakeCurrent(gr->egl_display, go->egl_surface,
go->egl_surface, gr->egl_context);
if (ret == EGL_FALSE) {
if (errored)
return -1;
errored = 1;
weston_log("Failed to make EGL context current.\n");
gl_renderer_print_egl_error_state();
return -1;
}
return 0;
}
static int
shader_init(struct gl_shader *shader, struct gl_renderer *gr,
const char *vertex_source, const char *fragment_source);
static void
use_shader(struct gl_renderer *gr, struct gl_shader *shader)
{
if (!shader->program) {
int ret;
ret = shader_init(shader, gr,
shader->vertex_source,
shader->fragment_source);
if (ret < 0)
weston_log("warning: failed to compile shader\n");
}
if (gr->current_shader == shader)
return;
glUseProgram(shader->program);
gr->current_shader = shader;
}
static void
shader_uniforms(struct gl_shader *shader,
struct weston_view *view,
struct weston_output *output)
{
int i;
struct gl_surface_state *gs = get_surface_state(view->surface);
struct gl_output_state *go = get_output_state(output);
glUniformMatrix4fv(shader->proj_uniform,
1, GL_FALSE, go->output_matrix.d);
glUniform4fv(shader->color_uniform, 1, gs->color);
glUniform1f(shader->alpha_uniform, view->alpha);
for (i = 0; i < gs->num_textures; i++)
glUniform1i(shader->tex_uniforms[i], i);
}
static void
draw_view(struct weston_view *ev, struct weston_output *output,
pixman_region32_t *damage) /* in global coordinates */
{
struct weston_compositor *ec = ev->surface->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_surface_state *gs = get_surface_state(ev->surface);
/* repaint bounding region in global coordinates: */
pixman_region32_t repaint;
/* opaque region in surface coordinates: */
pixman_region32_t surface_opaque;
/* non-opaque region in surface coordinates: */
pixman_region32_t surface_blend;
GLint filter;
int i;
/* In case of a runtime switch of renderers, we may not have received
* an attach for this surface since the switch. In that case we don't
* have a valid buffer or a proper shader set up so skip rendering. */
if (!gs->shader)
return;
pixman_region32_init(&repaint);
pixman_region32_intersect(&repaint,
&ev->transform.boundingbox, damage);
pixman_region32_subtract(&repaint, &repaint, &ev->clip);
if (!pixman_region32_not_empty(&repaint))
goto out;
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
if (gr->fan_debug) {
use_shader(gr, &gr->solid_shader);
shader_uniforms(&gr->solid_shader, ev, output);
}
use_shader(gr, gs->shader);
shader_uniforms(gs->shader, ev, output);
if (ev->transform.enabled || output->zoom.active ||
output->current_scale != ev->surface->buffer_viewport.buffer.scale)
filter = GL_LINEAR;
else
filter = GL_NEAREST;
for (i = 0; i < gs->num_textures; i++) {
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(gs->target, gs->textures[i]);
glTexParameteri(gs->target, GL_TEXTURE_MIN_FILTER, filter);
glTexParameteri(gs->target, GL_TEXTURE_MAG_FILTER, filter);
}
/* blended region is whole surface minus opaque region: */
pixman_region32_init_rect(&surface_blend, 0, 0,
ev->surface->width, ev->surface->height);
if (ev->geometry.scissor_enabled)
pixman_region32_intersect(&surface_blend, &surface_blend,
&ev->geometry.scissor);
pixman_region32_subtract(&surface_blend, &surface_blend,
&ev->surface->opaque);
/* XXX: Should we be using ev->transform.opaque here? */
pixman_region32_init(&surface_opaque);
if (ev->geometry.scissor_enabled)
pixman_region32_intersect(&surface_opaque,
&ev->surface->opaque,
&ev->geometry.scissor);
else
pixman_region32_copy(&surface_opaque, &ev->surface->opaque);
if (pixman_region32_not_empty(&surface_opaque)) {
if (gs->shader == &gr->texture_shader_rgba) {
/* Special case for RGBA textures with possibly
* bad data in alpha channel: use the shader
* that forces texture alpha = 1.0.
* Xwayland surfaces need this.
*/
use_shader(gr, &gr->texture_shader_rgbx);
shader_uniforms(&gr->texture_shader_rgbx, ev, output);
}
if (ev->alpha < 1.0)
glEnable(GL_BLEND);
else
glDisable(GL_BLEND);
repaint_region(ev, &repaint, &surface_opaque);
}
if (pixman_region32_not_empty(&surface_blend)) {
use_shader(gr, gs->shader);
glEnable(GL_BLEND);
repaint_region(ev, &repaint, &surface_blend);
}
pixman_region32_fini(&surface_blend);
pixman_region32_fini(&surface_opaque);
out:
pixman_region32_fini(&repaint);
}
static void
repaint_views(struct weston_output *output, pixman_region32_t *damage)
{
struct weston_compositor *compositor = output->compositor;
struct weston_view *view;
wl_list_for_each_reverse(view, &compositor->view_list, link)
if (view->plane == &compositor->primary_plane)
draw_view(view, output, damage);
}
static void
draw_output_border_texture(struct gl_output_state *go,
enum gl_renderer_border_side side,
int32_t x, int32_t y,
int32_t width, int32_t height)
{
struct gl_border_image *img = &go->borders[side];
static GLushort indices [] = { 0, 1, 3, 3, 1, 2 };
if (!img->data) {
if (img->tex) {
glDeleteTextures(1, &img->tex);
img->tex = 0;
}
return;
}
if (!img->tex) {
glGenTextures(1, &img->tex);
glBindTexture(GL_TEXTURE_2D, img->tex);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MAG_FILTER, GL_NEAREST);
} else {
glBindTexture(GL_TEXTURE_2D, img->tex);
}
if (go->border_status & (1 << side)) {
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
img->tex_width, img->height, 0,
GL_BGRA_EXT, GL_UNSIGNED_BYTE, img->data);
}
GLfloat texcoord[] = {
0.0f, 0.0f,
(GLfloat)img->width / (GLfloat)img->tex_width, 0.0f,
(GLfloat)img->width / (GLfloat)img->tex_width, 1.0f,
0.0f, 1.0f,
};
GLfloat verts[] = {
x, y,
x + width, y,
x + width, y + height,
x, y + height
};
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, verts);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, texcoord);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
glDisableVertexAttribArray(1);
glDisableVertexAttribArray(0);
}
static int
output_has_borders(struct weston_output *output)
{
struct gl_output_state *go = get_output_state(output);
return go->borders[GL_RENDERER_BORDER_TOP].data ||
go->borders[GL_RENDERER_BORDER_RIGHT].data ||
go->borders[GL_RENDERER_BORDER_BOTTOM].data ||
go->borders[GL_RENDERER_BORDER_LEFT].data;
}
static void
draw_output_borders(struct weston_output *output,
enum gl_border_status border_status)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
struct gl_shader *shader = &gr->texture_shader_rgba;
struct gl_border_image *top, *bottom, *left, *right;
struct weston_matrix matrix;
int full_width, full_height;
if (border_status == BORDER_STATUS_CLEAN)
return; /* Clean. Nothing to do. */
top = &go->borders[GL_RENDERER_BORDER_TOP];
bottom = &go->borders[GL_RENDERER_BORDER_BOTTOM];
left = &go->borders[GL_RENDERER_BORDER_LEFT];
right = &go->borders[GL_RENDERER_BORDER_RIGHT];
full_width = output->current_mode->width + left->width + right->width;
full_height = output->current_mode->height + top->height + bottom->height;
glDisable(GL_BLEND);
use_shader(gr, shader);
glViewport(0, 0, full_width, full_height);
weston_matrix_init(&matrix);
weston_matrix_translate(&matrix, -full_width/2.0, -full_height/2.0, 0);
weston_matrix_scale(&matrix, 2.0/full_width, -2.0/full_height, 1);
glUniformMatrix4fv(shader->proj_uniform, 1, GL_FALSE, matrix.d);
glUniform1i(shader->tex_uniforms[0], 0);
glUniform1f(shader->alpha_uniform, 1);
glActiveTexture(GL_TEXTURE0);
if (border_status & BORDER_TOP_DIRTY)
draw_output_border_texture(go, GL_RENDERER_BORDER_TOP,
0, 0,
full_width, top->height);
if (border_status & BORDER_LEFT_DIRTY)
draw_output_border_texture(go, GL_RENDERER_BORDER_LEFT,
0, top->height,
left->width, output->current_mode->height);
if (border_status & BORDER_RIGHT_DIRTY)
draw_output_border_texture(go, GL_RENDERER_BORDER_RIGHT,
full_width - right->width, top->height,
right->width, output->current_mode->height);
if (border_status & BORDER_BOTTOM_DIRTY)
draw_output_border_texture(go, GL_RENDERER_BORDER_BOTTOM,
0, full_height - bottom->height,
full_width, bottom->height);
}
static void
output_get_border_damage(struct weston_output *output,
enum gl_border_status border_status,
pixman_region32_t *damage)
{
struct gl_output_state *go = get_output_state(output);
struct gl_border_image *top, *bottom, *left, *right;
int full_width, full_height;
if (border_status == BORDER_STATUS_CLEAN)
return; /* Clean. Nothing to do. */
top = &go->borders[GL_RENDERER_BORDER_TOP];
bottom = &go->borders[GL_RENDERER_BORDER_BOTTOM];
left = &go->borders[GL_RENDERER_BORDER_LEFT];
right = &go->borders[GL_RENDERER_BORDER_RIGHT];
full_width = output->current_mode->width + left->width + right->width;
full_height = output->current_mode->height + top->height + bottom->height;
if (border_status & BORDER_TOP_DIRTY)
pixman_region32_union_rect(damage, damage,
0, 0,
full_width, top->height);
if (border_status & BORDER_LEFT_DIRTY)
pixman_region32_union_rect(damage, damage,
0, top->height,
left->width, output->current_mode->height);
if (border_status & BORDER_RIGHT_DIRTY)
pixman_region32_union_rect(damage, damage,
full_width - right->width, top->height,
right->width, output->current_mode->height);
if (border_status & BORDER_BOTTOM_DIRTY)
pixman_region32_union_rect(damage, damage,
0, full_height - bottom->height,
full_width, bottom->height);
}
static void
output_get_damage(struct weston_output *output,
pixman_region32_t *buffer_damage, uint32_t *border_damage)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
EGLint buffer_age = 0;
EGLBoolean ret;
int i;
if (gr->has_egl_buffer_age) {
ret = eglQuerySurface(gr->egl_display, go->egl_surface,
EGL_BUFFER_AGE_EXT, &buffer_age);
if (ret == EGL_FALSE) {
weston_log("buffer age query failed.\n");
gl_renderer_print_egl_error_state();
}
}
if (buffer_age == 0 || buffer_age - 1 > BUFFER_DAMAGE_COUNT) {
pixman_region32_copy(buffer_damage, &output->region);
*border_damage = BORDER_ALL_DIRTY;
} else {
for (i = 0; i < buffer_age - 1; i++)
*border_damage |= go->border_damage[(go->buffer_damage_index + i) % BUFFER_DAMAGE_COUNT];
if (*border_damage & BORDER_SIZE_CHANGED) {
/* If we've had a resize, we have to do a full
* repaint. */
*border_damage |= BORDER_ALL_DIRTY;
pixman_region32_copy(buffer_damage, &output->region);
} else {
for (i = 0; i < buffer_age - 1; i++)
pixman_region32_union(buffer_damage,
buffer_damage,
&go->buffer_damage[(go->buffer_damage_index + i) % BUFFER_DAMAGE_COUNT]);
}
}
}
static void
output_rotate_damage(struct weston_output *output,
pixman_region32_t *output_damage,
enum gl_border_status border_status)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
if (!gr->has_egl_buffer_age)
return;
go->buffer_damage_index += BUFFER_DAMAGE_COUNT - 1;
go->buffer_damage_index %= BUFFER_DAMAGE_COUNT;
pixman_region32_copy(&go->buffer_damage[go->buffer_damage_index], output_damage);
go->border_damage[go->buffer_damage_index] = border_status;
}
/* NOTE: We now allow falling back to ARGB gl visuals when XRGB is
* unavailable, so we're assuming the background has no transparency
* and that everything with a blend, like drop shadows, will have something
* opaque (like the background) drawn underneath it.
*
* Depending on the underlying hardware, violating that assumption could
* result in seeing through to another display plane.
*/
static void
gl_renderer_repaint_output(struct weston_output *output,
pixman_region32_t *output_damage)
{
struct gl_output_state *go = get_output_state(output);
struct weston_compositor *compositor = output->compositor;
struct gl_renderer *gr = get_renderer(compositor);
EGLBoolean ret;
static int errored;
int i, nrects, buffer_height;
EGLint *egl_damage, *d;
pixman_box32_t *rects;
pixman_region32_t buffer_damage, total_damage;
enum gl_border_status border_damage = BORDER_STATUS_CLEAN;
if (use_output(output) < 0)
return;
/* Calculate the viewport */
glViewport(go->borders[GL_RENDERER_BORDER_LEFT].width,
go->borders[GL_RENDERER_BORDER_BOTTOM].height,
output->current_mode->width,
output->current_mode->height);
/* Calculate the global GL matrix */
go->output_matrix = output->matrix;
weston_matrix_translate(&go->output_matrix,
-(output->current_mode->width / 2.0),
-(output->current_mode->height / 2.0), 0);
weston_matrix_scale(&go->output_matrix,
2.0 / output->current_mode->width,
-2.0 / output->current_mode->height, 1);
/* if debugging, redraw everything outside the damage to clean up
* debug lines from the previous draw on this buffer:
*/
if (gr->fan_debug) {
pixman_region32_t undamaged;
pixman_region32_init(&undamaged);
pixman_region32_subtract(&undamaged, &output->region,
output_damage);
gr->fan_debug = 0;
repaint_views(output, &undamaged);
gr->fan_debug = 1;
pixman_region32_fini(&undamaged);
}
pixman_region32_init(&total_damage);
pixman_region32_init(&buffer_damage);
output_get_damage(output, &buffer_damage, &border_damage);
output_rotate_damage(output, output_damage, go->border_status);
pixman_region32_union(&total_damage, &buffer_damage, output_damage);
border_damage |= go->border_status;
repaint_views(output, &total_damage);
pixman_region32_fini(&total_damage);
pixman_region32_fini(&buffer_damage);
draw_output_borders(output, border_damage);
pixman_region32_copy(&output->previous_damage, output_damage);
wl_signal_emit(&output->frame_signal, output);
if (gr->swap_buffers_with_damage) {
pixman_region32_init(&buffer_damage);
weston_transformed_region(output->width, output->height,
output->transform,
output->current_scale,
output_damage, &buffer_damage);
if (output_has_borders(output)) {
pixman_region32_translate(&buffer_damage,
go->borders[GL_RENDERER_BORDER_LEFT].width,
go->borders[GL_RENDERER_BORDER_TOP].height);
output_get_border_damage(output, go->border_status,
&buffer_damage);
}
rects = pixman_region32_rectangles(&buffer_damage, &nrects);
egl_damage = malloc(nrects * 4 * sizeof(EGLint));
buffer_height = go->borders[GL_RENDERER_BORDER_TOP].height +
output->current_mode->height +
go->borders[GL_RENDERER_BORDER_BOTTOM].height;
d = egl_damage;
for (i = 0; i < nrects; ++i) {
*d++ = rects[i].x1;
*d++ = buffer_height - rects[i].y2;
*d++ = rects[i].x2 - rects[i].x1;
*d++ = rects[i].y2 - rects[i].y1;
}
ret = gr->swap_buffers_with_damage(gr->egl_display,
go->egl_surface,
egl_damage, nrects);
free(egl_damage);
pixman_region32_fini(&buffer_damage);
} else {
ret = eglSwapBuffers(gr->egl_display, go->egl_surface);
}
if (ret == EGL_FALSE && !errored) {
errored = 1;
weston_log("Failed in eglSwapBuffers.\n");
gl_renderer_print_egl_error_state();
}
go->border_status = BORDER_STATUS_CLEAN;
}
static int
gl_renderer_read_pixels(struct weston_output *output,
pixman_format_code_t format, void *pixels,
uint32_t x, uint32_t y,
uint32_t width, uint32_t height)
{
GLenum gl_format;
struct gl_output_state *go = get_output_state(output);
x += go->borders[GL_RENDERER_BORDER_LEFT].width;
y += go->borders[GL_RENDERER_BORDER_BOTTOM].height;
switch (format) {
case PIXMAN_a8r8g8b8:
gl_format = GL_BGRA_EXT;
break;
case PIXMAN_a8b8g8r8:
gl_format = GL_RGBA;
break;
default:
return -1;
}
if (use_output(output) < 0)
return -1;
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glReadPixels(x, y, width, height, gl_format,
GL_UNSIGNED_BYTE, pixels);
return 0;
}
static void
gl_renderer_flush_damage(struct weston_surface *surface)
{
struct gl_renderer *gr = get_renderer(surface->compositor);
struct gl_surface_state *gs = get_surface_state(surface);
struct weston_buffer *buffer = gs->buffer_ref.buffer;
struct weston_view *view;
bool texture_used;
pixman_box32_t *rectangles;
void *data;
int i, j, n;
pixman_region32_union(&gs->texture_damage,
&gs->texture_damage, &surface->damage);
if (!buffer)
return;
/* Avoid upload, if the texture won't be used this time.
* We still accumulate the damage in texture_damage, and
* hold the reference to the buffer, in case the surface
* migrates back to the primary plane.
*/
texture_used = false;
wl_list_for_each(view, &surface->views, surface_link) {
if (view->plane == &surface->compositor->primary_plane) {
texture_used = true;
break;
}
}
if (!texture_used)
return;
if (!pixman_region32_not_empty(&gs->texture_damage) &&
!gs->needs_full_upload)
goto done;
data = wl_shm_buffer_get_data(buffer->shm_buffer);
if (!gr->has_unpack_subimage) {
wl_shm_buffer_begin_access(buffer->shm_buffer);
for (j = 0; j < gs->num_textures; j++) {
glBindTexture(GL_TEXTURE_2D, gs->textures[j]);
glTexImage2D(GL_TEXTURE_2D, 0,
gs->gl_format[j],
gs->pitch / gs->hvsub[j],
buffer->height / gs->hvsub[j],
0,
gs->gl_format[j],
gs->gl_pixel_type,
data + gs->offset[j]);
}
wl_shm_buffer_end_access(buffer->shm_buffer);
goto done;
}
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, gs->pitch);
if (gs->needs_full_upload) {
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
wl_shm_buffer_begin_access(buffer->shm_buffer);
for (j = 0; j < gs->num_textures; j++) {
glBindTexture(GL_TEXTURE_2D, gs->textures[j]);
glTexImage2D(GL_TEXTURE_2D, 0,
gs->gl_format[j],
gs->pitch / gs->hvsub[j],
buffer->height / gs->hvsub[j],
0,
gs->gl_format[j],
gs->gl_pixel_type,
data + gs->offset[j]);
}
wl_shm_buffer_end_access(buffer->shm_buffer);
goto done;
}
rectangles = pixman_region32_rectangles(&gs->texture_damage, &n);
wl_shm_buffer_begin_access(buffer->shm_buffer);
for (i = 0; i < n; i++) {
pixman_box32_t r;
r = weston_surface_to_buffer_rect(surface, rectangles[i]);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, r.x1);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, r.y1);
for (j = 0; j < gs->num_textures; j++) {
glBindTexture(GL_TEXTURE_2D, gs->textures[j]);
glTexSubImage2D(GL_TEXTURE_2D, 0,
r.x1 / gs->hvsub[j],
r.y1 / gs->hvsub[j],
(r.x2 - r.x1) / gs->hvsub[j],
(r.y2 - r.y1) / gs->hvsub[j],
gs->gl_format[j],
gs->gl_pixel_type,
data + gs->offset[j]);
}
}
wl_shm_buffer_end_access(buffer->shm_buffer);
done:
pixman_region32_fini(&gs->texture_damage);
pixman_region32_init(&gs->texture_damage);
gs->needs_full_upload = false;
weston_buffer_reference(&gs->buffer_ref, NULL);
}
static void
ensure_textures(struct gl_surface_state *gs, int num_textures)
{
int i;
if (num_textures <= gs->num_textures)
return;
for (i = gs->num_textures; i < num_textures; i++) {
glGenTextures(1, &gs->textures[i]);
glBindTexture(gs->target, gs->textures[i]);
glTexParameteri(gs->target,
GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(gs->target,
GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
gs->num_textures = num_textures;
glBindTexture(gs->target, 0);
}
static void
gl_renderer_attach_shm(struct weston_surface *es, struct weston_buffer *buffer,
struct wl_shm_buffer *shm_buffer)
{
struct weston_compositor *ec = es->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_surface_state *gs = get_surface_state(es);
GLenum gl_format[3] = {0, 0, 0};
GLenum gl_pixel_type;
int pitch;
int num_planes;
buffer->shm_buffer = shm_buffer;
buffer->width = wl_shm_buffer_get_width(shm_buffer);
buffer->height = wl_shm_buffer_get_height(shm_buffer);
num_planes = 1;
gs->offset[0] = 0;
gs->hvsub[0] = 1;
switch (wl_shm_buffer_get_format(shm_buffer)) {
case WL_SHM_FORMAT_XRGB8888:
gs->shader = &gr->texture_shader_rgbx;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 4;
gl_format[0] = GL_BGRA_EXT;
gl_pixel_type = GL_UNSIGNED_BYTE;
break;
case WL_SHM_FORMAT_ARGB8888:
gs->shader = &gr->texture_shader_rgba;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 4;
gl_format[0] = GL_BGRA_EXT;
gl_pixel_type = GL_UNSIGNED_BYTE;
break;
case WL_SHM_FORMAT_RGB565:
gs->shader = &gr->texture_shader_rgbx;
pitch = wl_shm_buffer_get_stride(shm_buffer) / 2;
gl_format[0] = GL_RGB;
gl_pixel_type = GL_UNSIGNED_SHORT_5_6_5;
break;
case WL_SHM_FORMAT_YUV420:
gs->shader = &gr->texture_shader_y_u_v;
pitch = wl_shm_buffer_get_stride(shm_buffer);
gl_pixel_type = GL_UNSIGNED_BYTE;
num_planes = 3;
gs->offset[1] = gs->offset[0] + (pitch / gs->hvsub[0]) *
(buffer->height / gs->hvsub[0]);
gs->hvsub[1] = 2;
gs->offset[2] = gs->offset[1] + (pitch / gs->hvsub[1]) *
(buffer->height / gs->hvsub[1]);
gs->hvsub[2] = 2;
if (gr->has_gl_texture_rg) {
gl_format[0] = GL_R8_EXT;
gl_format[1] = GL_R8_EXT;
gl_format[2] = GL_R8_EXT;
} else {
gl_format[0] = GL_LUMINANCE;
gl_format[1] = GL_LUMINANCE;
gl_format[2] = GL_LUMINANCE;
}
break;
case WL_SHM_FORMAT_NV12:
gs->shader = &gr->texture_shader_y_xuxv;
pitch = wl_shm_buffer_get_stride(shm_buffer);
gl_pixel_type = GL_UNSIGNED_BYTE;
num_planes = 2;
gs->offset[1] = gs->offset[0] + (pitch / gs->hvsub[0]) * (buffer->height / gs->hvsub[0]);
gs->hvsub[1] = 2;
if (gr->has_gl_texture_rg) {
gl_format[0] = GL_R8_EXT;
gl_format[1] = GL_RG8_EXT;
} else {
gl_format[0] = GL_LUMINANCE;
gl_format[1] = GL_LUMINANCE_ALPHA;
}
break;
default:
weston_log("warning: unknown shm buffer format: %08x\n",
wl_shm_buffer_get_format(shm_buffer));
return;
}
/* Only allocate a texture if it doesn't match existing one.
* If a switch from DRM allocated buffer to a SHM buffer is
* happening, we need to allocate a new texture buffer. */
if (pitch != gs->pitch ||
buffer->height != gs->height ||
gl_format[0] != gs->gl_format[0] ||
gl_format[1] != gs->gl_format[1] ||
gl_format[2] != gs->gl_format[2] ||
gl_pixel_type != gs->gl_pixel_type ||
gs->buffer_type != BUFFER_TYPE_SHM) {
gs->pitch = pitch;
gs->height = buffer->height;
gs->target = GL_TEXTURE_2D;
gs->gl_format[0] = gl_format[0];
gs->gl_format[1] = gl_format[1];
gs->gl_format[2] = gl_format[2];
gs->gl_pixel_type = gl_pixel_type;
gs->buffer_type = BUFFER_TYPE_SHM;
gs->needs_full_upload = true;
gs->y_inverted = 1;
gs->surface = es;
ensure_textures(gs, num_planes);
}
}
static void
gl_renderer_attach_egl(struct weston_surface *es, struct weston_buffer *buffer,
uint32_t format)
{
struct weston_compositor *ec = es->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_surface_state *gs = get_surface_state(es);
EGLint attribs[3];
int i, num_planes;
buffer->legacy_buffer = (struct wl_buffer *)buffer->resource;
gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
EGL_WIDTH, &buffer->width);
gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
EGL_HEIGHT, &buffer->height);
gr->query_buffer(gr->egl_display, buffer->legacy_buffer,
EGL_WAYLAND_Y_INVERTED_WL, &buffer->y_inverted);
for (i = 0; i < gs->num_images; i++) {
egl_image_unref(gs->images[i]);
gs->images[i] = NULL;
}
gs->num_images = 0;
gs->target = GL_TEXTURE_2D;
switch (format) {
case EGL_TEXTURE_RGB:
case EGL_TEXTURE_RGBA:
default:
num_planes = 1;
gs->shader = &gr->texture_shader_rgba;
break;
case EGL_TEXTURE_EXTERNAL_WL:
num_planes = 1;
gs->target = GL_TEXTURE_EXTERNAL_OES;
gs->shader = &gr->texture_shader_egl_external;
break;
case EGL_TEXTURE_Y_UV_WL:
num_planes = 2;
gs->shader = &gr->texture_shader_y_uv;
break;
case EGL_TEXTURE_Y_U_V_WL:
num_planes = 3;
gs->shader = &gr->texture_shader_y_u_v;
break;
case EGL_TEXTURE_Y_XUXV_WL:
num_planes = 2;
gs->shader = &gr->texture_shader_y_xuxv;
break;
}
ensure_textures(gs, num_planes);
for (i = 0; i < num_planes; i++) {
attribs[0] = EGL_WAYLAND_PLANE_WL;
attribs[1] = i;
attribs[2] = EGL_NONE;
gs->images[i] = egl_image_create(gr,
EGL_WAYLAND_BUFFER_WL,
buffer->legacy_buffer,
attribs);
if (!gs->images[i]) {
weston_log("failed to create img for plane %d\n", i);
continue;
}
gs->num_images++;
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(gs->target, gs->textures[i]);
gr->image_target_texture_2d(gs->target,
gs->images[i]->image);
}
gs->pitch = buffer->width;
gs->height = buffer->height;
gs->buffer_type = BUFFER_TYPE_EGL;
gs->y_inverted = buffer->y_inverted;
}
static void
gl_renderer_destroy_dmabuf(struct linux_dmabuf_buffer *dmabuf)
{
struct dmabuf_image *image = dmabuf->user_data;
dmabuf_image_destroy(image);
}
static struct egl_image *
import_simple_dmabuf(struct gl_renderer *gr,
struct dmabuf_attributes *attributes)
{
struct egl_image *image;
EGLint attribs[30];
int atti = 0;
/* This requires the Mesa commit in
* Mesa 10.3 (08264e5dad4df448e7718e782ad9077902089a07) or
* Mesa 10.2.7 (55d28925e6109a4afd61f109e845a8a51bd17652).
* Otherwise Mesa closes the fd behind our back and re-importing
* will fail.
* https://bugs.freedesktop.org/show_bug.cgi?id=76188
*/
attribs[atti++] = EGL_WIDTH;
attribs[atti++] = attributes->width;
attribs[atti++] = EGL_HEIGHT;
attribs[atti++] = attributes->height;
attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
attribs[atti++] = attributes->format;
/* XXX: Add modifier here when supported */
if (attributes->n_planes > 0) {
attribs[atti++] = EGL_DMA_BUF_PLANE0_FD_EXT;
attribs[atti++] = attributes->fd[0];
attribs[atti++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
attribs[atti++] = attributes->offset[0];
attribs[atti++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
attribs[atti++] = attributes->stride[0];
}
if (attributes->n_planes > 1) {
attribs[atti++] = EGL_DMA_BUF_PLANE1_FD_EXT;
attribs[atti++] = attributes->fd[1];
attribs[atti++] = EGL_DMA_BUF_PLANE1_OFFSET_EXT;
attribs[atti++] = attributes->offset[1];
attribs[atti++] = EGL_DMA_BUF_PLANE1_PITCH_EXT;
attribs[atti++] = attributes->stride[1];
}
if (attributes->n_planes > 2) {
attribs[atti++] = EGL_DMA_BUF_PLANE2_FD_EXT;
attribs[atti++] = attributes->fd[2];
attribs[atti++] = EGL_DMA_BUF_PLANE2_OFFSET_EXT;
attribs[atti++] = attributes->offset[2];
attribs[atti++] = EGL_DMA_BUF_PLANE2_PITCH_EXT;
attribs[atti++] = attributes->stride[2];
}
attribs[atti++] = EGL_NONE;
image = egl_image_create(gr, EGL_LINUX_DMA_BUF_EXT, NULL,
attribs);
return image;
}
/* The kernel header drm_fourcc.h defines the DRM formats below. We duplicate
* some of the definitions here so that building Weston won't require
* bleeding-edge kernel headers.
*/
#ifndef DRM_FORMAT_R8
#define DRM_FORMAT_R8 fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
#endif
#ifndef DRM_FORMAT_GR88
#define DRM_FORMAT_GR88 fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
#endif
struct yuv_format_descriptor yuv_formats[] = {
{
.format = DRM_FORMAT_YUYV,
.input_planes = 1,
.output_planes = 2,
.texture_type = EGL_TEXTURE_Y_XUXV_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_GR88,
.plane_index = 0
}, {
.width_divisor = 2,
.height_divisor = 1,
.format = DRM_FORMAT_ARGB8888,
.plane_index = 0
}}
}, {
.format = DRM_FORMAT_NV12,
.input_planes = 2,
.output_planes = 2,
.texture_type = EGL_TEXTURE_Y_UV_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 0
}, {
.width_divisor = 2,
.height_divisor = 2,
.format = DRM_FORMAT_GR88,
.plane_index = 1
}}
}, {
.format = DRM_FORMAT_YUV420,
.input_planes = 3,
.output_planes = 3,
.texture_type = EGL_TEXTURE_Y_U_V_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 0
}, {
.width_divisor = 2,
.height_divisor = 2,
.format = DRM_FORMAT_R8,
.plane_index = 1
}, {
.width_divisor = 2,
.height_divisor = 2,
.format = DRM_FORMAT_R8,
.plane_index = 2
}}
}, {
.format = DRM_FORMAT_YUV444,
.input_planes = 3,
.output_planes = 3,
.texture_type = EGL_TEXTURE_Y_U_V_WL,
{{
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 0
}, {
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 1
}, {
.width_divisor = 1,
.height_divisor = 1,
.format = DRM_FORMAT_R8,
.plane_index = 2
}}
}
};
static struct egl_image *
import_dmabuf_single_plane(struct gl_renderer *gr,
const struct dmabuf_attributes *attributes,
struct yuv_plane_descriptor *descriptor)
{
struct dmabuf_attributes plane;
struct egl_image *image;
char fmt[4];
plane.width = attributes->width / descriptor->width_divisor;
plane.height = attributes->height / descriptor->height_divisor;
plane.format = descriptor->format;
plane.n_planes = 1;
plane.fd[0] = attributes->fd[descriptor->plane_index];
plane.offset[0] = attributes->offset[descriptor->plane_index];
plane.stride[0] = attributes->stride[descriptor->plane_index];
plane.modifier[0] = attributes->modifier[descriptor->plane_index];
image = import_simple_dmabuf(gr, &plane);
if (!image) {
weston_log("Failed to import plane %d as %.4s\n",
descriptor->plane_index,
dump_format(descriptor->format, fmt));
return NULL;
}
return image;
}
static bool
import_yuv_dmabuf(struct gl_renderer *gr,
struct dmabuf_image *image)
{
unsigned i;
int j;
int ret;
struct yuv_format_descriptor *format = NULL;
struct dmabuf_attributes *attributes = &image->dmabuf->attributes;
char fmt[4];
for (i = 0; i < ARRAY_LENGTH(yuv_formats); ++i) {
if (yuv_formats[i].format == attributes->format) {
format = &yuv_formats[i];
break;
}
}
if (!format) {
weston_log("Error during import, and no known conversion for format "
"%.4s in the renderer",
dump_format(attributes->format, fmt));
return false;
}
if (attributes->n_planes != format->input_planes) {
weston_log("%.4s dmabuf must contain %d plane%s (%d provided)",
dump_format(format->format, fmt),
format->input_planes,
(format->input_planes > 1) ? "s" : "",
attributes->n_planes);
return false;
}
for (j = 0; j < format->output_planes; ++j) {
image->images[j] = import_dmabuf_single_plane(gr, attributes,
&format->plane[j]);
if (!image->images[j]) {
while (j) {
ret = egl_image_unref(image->images[--j]);
assert(ret == 0);
}
return false;
}
}
image->num_images = format->output_planes;
switch (format->texture_type) {
case EGL_TEXTURE_Y_XUXV_WL:
image->shader = &gr->texture_shader_y_xuxv;
break;
case EGL_TEXTURE_Y_UV_WL:
image->shader = &gr->texture_shader_y_uv;
break;
case EGL_TEXTURE_Y_U_V_WL:
image->shader = &gr->texture_shader_y_u_v;
break;
default:
assert(false);
}
return true;
}
static GLenum
choose_texture_target(struct dmabuf_attributes *attributes)
{
if (attributes->n_planes > 1)
return GL_TEXTURE_EXTERNAL_OES;
switch (attributes->format & ~DRM_FORMAT_BIG_ENDIAN) {
case DRM_FORMAT_YUYV:
case DRM_FORMAT_YVYU:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_VYUY:
case DRM_FORMAT_AYUV:
return GL_TEXTURE_EXTERNAL_OES;
default:
return GL_TEXTURE_2D;
}
}
static struct dmabuf_image *
import_dmabuf(struct gl_renderer *gr,
struct linux_dmabuf_buffer *dmabuf)
{
struct egl_image *egl_image;
struct dmabuf_image *image;
image = dmabuf_image_create();
image->dmabuf = dmabuf;
egl_image = import_simple_dmabuf(gr, &dmabuf->attributes);
if (egl_image) {
image->num_images = 1;
image->images[0] = egl_image;
image->import_type = IMPORT_TYPE_DIRECT;
image->target = choose_texture_target(&dmabuf->attributes);
switch (image->target) {
case GL_TEXTURE_2D:
image->shader = &gr->texture_shader_rgba;
break;
default:
image->shader = &gr->texture_shader_egl_external;
}
} else {
if (!import_yuv_dmabuf(gr, image)) {
dmabuf_image_destroy(image);
return NULL;
}
image->import_type = IMPORT_TYPE_GL_CONVERSION;
image->target = GL_TEXTURE_2D;
}
return image;
}
static bool
gl_renderer_import_dmabuf(struct weston_compositor *ec,
struct linux_dmabuf_buffer *dmabuf)
{
struct gl_renderer *gr = get_renderer(ec);
struct dmabuf_image *image;
int i;
assert(gr->has_dmabuf_import);
for (i = 0; i < dmabuf->attributes.n_planes; i++) {
/* EGL import does not have modifiers */
if (dmabuf->attributes.modifier[i] != 0)
return false;
}
/* reject all flags we do not recognize or handle */
if (dmabuf->attributes.flags & ~ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT)
return false;
image = import_dmabuf(gr, dmabuf);
if (!image)
return false;
wl_list_insert(&gr->dmabuf_images, &image->link);
linux_dmabuf_buffer_set_user_data(dmabuf, image,
gl_renderer_destroy_dmabuf);
return true;
}
static bool
import_known_dmabuf(struct gl_renderer *gr,
struct dmabuf_image *image)
{
switch (image->import_type) {
case IMPORT_TYPE_DIRECT:
image->images[0] = import_simple_dmabuf(gr, &image->dmabuf->attributes);
if (!image->images[0])
return false;
break;
case IMPORT_TYPE_GL_CONVERSION:
if (!import_yuv_dmabuf(gr, image))
return false;
break;
default:
weston_log("Invalid import type for dmabuf\n");
return false;
}
return true;
}
static void
gl_renderer_attach_dmabuf(struct weston_surface *surface,
struct weston_buffer *buffer,
struct linux_dmabuf_buffer *dmabuf)
{
struct gl_renderer *gr = get_renderer(surface->compositor);
struct gl_surface_state *gs = get_surface_state(surface);
struct dmabuf_image *image;
int i;
int ret;
if (!gr->has_dmabuf_import) {
linux_dmabuf_buffer_send_server_error(dmabuf,
"EGL dmabuf import not supported");
return;
}
buffer->width = dmabuf->attributes.width;
buffer->height = dmabuf->attributes.height;
/*
* GL-renderer uses the OpenGL convention of texture coordinates, where
* the origin is at bottom-left. Because dmabuf buffers have the origin
* at top-left, we must invert the Y_INVERT flag to get the image right.
*/
buffer->y_inverted =
!(dmabuf->attributes.flags & ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT);
for (i = 0; i < gs->num_images; i++)
egl_image_unref(gs->images[i]);
gs->num_images = 0;
/*
* We try to always hold an imported EGLImage from the dmabuf
* to prevent the client from preventing re-imports. But, we also
* need to re-import every time the contents may change because
* GL driver's caching may need flushing.
*
* Here we release the cache reference which has to be final.
*/
image = linux_dmabuf_buffer_get_user_data(dmabuf);
/* The dmabuf_image should have been created during the import */
assert(image != NULL);
for (i = 0; i < image->num_images; ++i) {
ret = egl_image_unref(image->images[i]);
assert(ret == 0);
}
if (!import_known_dmabuf(gr, image)) {
linux_dmabuf_buffer_send_server_error(dmabuf, "EGL dmabuf import failed");
return;
}
gs->num_images = image->num_images;
for (i = 0; i < gs->num_images; ++i)
gs->images[i] = egl_image_ref(image->images[i]);
gs->target = image->target;
ensure_textures(gs, gs->num_images);
for (i = 0; i < gs->num_images; ++i) {
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(gs->target, gs->textures[i]);
gr->image_target_texture_2d(gs->target, gs->images[i]->image);
}
gs->shader = image->shader;
gs->pitch = buffer->width;
gs->height = buffer->height;
gs->buffer_type = BUFFER_TYPE_EGL;
gs->y_inverted = buffer->y_inverted;
}
static void
gl_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer)
{
struct weston_compositor *ec = es->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_surface_state *gs = get_surface_state(es);
struct wl_shm_buffer *shm_buffer;
struct linux_dmabuf_buffer *dmabuf;
EGLint format;
int i;
weston_buffer_reference(&gs->buffer_ref, buffer);
if (!buffer) {
for (i = 0; i < gs->num_images; i++) {
egl_image_unref(gs->images[i]);
gs->images[i] = NULL;
}
gs->num_images = 0;
glDeleteTextures(gs->num_textures, gs->textures);
gs->num_textures = 0;
gs->buffer_type = BUFFER_TYPE_NULL;
gs->y_inverted = 1;
return;
}
shm_buffer = wl_shm_buffer_get(buffer->resource);
if (shm_buffer)
gl_renderer_attach_shm(es, buffer, shm_buffer);
else if (gr->has_bind_display &&
gr->query_buffer(gr->egl_display, (void *)buffer->resource,
EGL_TEXTURE_FORMAT, &format))
gl_renderer_attach_egl(es, buffer, format);
else if ((dmabuf = linux_dmabuf_buffer_get(buffer->resource)))
gl_renderer_attach_dmabuf(es, buffer, dmabuf);
else {
weston_log("unhandled buffer type!\n");
weston_buffer_reference(&gs->buffer_ref, NULL);
gs->buffer_type = BUFFER_TYPE_NULL;
gs->y_inverted = 1;
}
}
static void
gl_renderer_surface_set_color(struct weston_surface *surface,
float red, float green, float blue, float alpha)
{
struct gl_surface_state *gs = get_surface_state(surface);
struct gl_renderer *gr = get_renderer(surface->compositor);
gs->color[0] = red;
gs->color[1] = green;
gs->color[2] = blue;
gs->color[3] = alpha;
gs->buffer_type = BUFFER_TYPE_SOLID;
gs->pitch = 1;
gs->height = 1;
gs->shader = &gr->solid_shader;
}
static void
gl_renderer_surface_get_content_size(struct weston_surface *surface,
int *width, int *height)
{
struct gl_surface_state *gs = get_surface_state(surface);
if (gs->buffer_type == BUFFER_TYPE_NULL) {
*width = 0;
*height = 0;
} else {
*width = gs->pitch;
*height = gs->height;
}
}
static uint32_t
pack_color(pixman_format_code_t format, float *c)
{
uint8_t r = round(c[0] * 255.0f);
uint8_t g = round(c[1] * 255.0f);
uint8_t b = round(c[2] * 255.0f);
uint8_t a = round(c[3] * 255.0f);
switch (format) {
case PIXMAN_a8b8g8r8:
return (a << 24) | (b << 16) | (g << 8) | r;
default:
assert(0);
return 0;
}
}
static int
gl_renderer_surface_copy_content(struct weston_surface *surface,
void *target, size_t size,
int src_x, int src_y,
int width, int height)
{
static const GLfloat verts[4 * 2] = {
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f
};
static const GLfloat projmat_normal[16] = { /* transpose */
2.0f, 0.0f, 0.0f, 0.0f,
0.0f, 2.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
-1.0f, -1.0f, 0.0f, 1.0f
};
static const GLfloat projmat_yinvert[16] = { /* transpose */
2.0f, 0.0f, 0.0f, 0.0f,
0.0f, -2.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
-1.0f, 1.0f, 0.0f, 1.0f
};
const pixman_format_code_t format = PIXMAN_a8b8g8r8;
const size_t bytespp = 4; /* PIXMAN_a8b8g8r8 */
const GLenum gl_format = GL_RGBA; /* PIXMAN_a8b8g8r8 little-endian */
struct gl_renderer *gr = get_renderer(surface->compositor);
struct gl_surface_state *gs = get_surface_state(surface);
int cw, ch;
GLuint fbo;
GLuint tex;
GLenum status;
const GLfloat *proj;
int i;
gl_renderer_surface_get_content_size(surface, &cw, &ch);
switch (gs->buffer_type) {
case BUFFER_TYPE_NULL:
return -1;
case BUFFER_TYPE_SOLID:
*(uint32_t *)target = pack_color(format, gs->color);
return 0;
case BUFFER_TYPE_SHM:
gl_renderer_flush_damage(surface);
/* fall through */
case BUFFER_TYPE_EGL:
break;
}
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, cw, ch,
0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, tex, 0);
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
weston_log("%s: fbo error: %#x\n", __func__, status);
glDeleteFramebuffers(1, &fbo);
glDeleteTextures(1, &tex);
return -1;
}
glViewport(0, 0, cw, ch);
glDisable(GL_BLEND);
use_shader(gr, gs->shader);
if (gs->y_inverted)
proj = projmat_normal;
else
proj = projmat_yinvert;
glUniformMatrix4fv(gs->shader->proj_uniform, 1, GL_FALSE, proj);
glUniform1f(gs->shader->alpha_uniform, 1.0f);
for (i = 0; i < gs->num_textures; i++) {
glUniform1i(gs->shader->tex_uniforms[i], i);
glActiveTexture(GL_TEXTURE0 + i);
glBindTexture(gs->target, gs->textures[i]);
glTexParameteri(gs->target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(gs->target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
/* position: */
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, verts);
glEnableVertexAttribArray(0);
/* texcoord: */
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, verts);
glEnableVertexAttribArray(1);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableVertexAttribArray(1);
glDisableVertexAttribArray(0);
glPixelStorei(GL_PACK_ALIGNMENT, bytespp);
glReadPixels(src_x, src_y, width, height, gl_format,
GL_UNSIGNED_BYTE, target);
glDeleteFramebuffers(1, &fbo);
glDeleteTextures(1, &tex);
return 0;
}
static void
surface_state_destroy(struct gl_surface_state *gs, struct gl_renderer *gr)
{
int i;
wl_list_remove(&gs->surface_destroy_listener.link);
wl_list_remove(&gs->renderer_destroy_listener.link);
gs->surface->renderer_state = NULL;
glDeleteTextures(gs->num_textures, gs->textures);
for (i = 0; i < gs->num_images; i++)
egl_image_unref(gs->images[i]);
weston_buffer_reference(&gs->buffer_ref, NULL);
pixman_region32_fini(&gs->texture_damage);
free(gs);
}
static void
surface_state_handle_surface_destroy(struct wl_listener *listener, void *data)
{
struct gl_surface_state *gs;
struct gl_renderer *gr;
gs = container_of(listener, struct gl_surface_state,
surface_destroy_listener);
gr = get_renderer(gs->surface->compositor);
surface_state_destroy(gs, gr);
}
static void
surface_state_handle_renderer_destroy(struct wl_listener *listener, void *data)
{
struct gl_surface_state *gs;
struct gl_renderer *gr;
gr = data;
gs = container_of(listener, struct gl_surface_state,
renderer_destroy_listener);
surface_state_destroy(gs, gr);
}
static int
gl_renderer_create_surface(struct weston_surface *surface)
{
struct gl_surface_state *gs;
struct gl_renderer *gr = get_renderer(surface->compositor);
gs = zalloc(sizeof *gs);
if (gs == NULL)
return -1;
/* A buffer is never attached to solid color surfaces, yet
* they still go through texcoord computations. Do not divide
* by zero there.
*/
gs->pitch = 1;
gs->y_inverted = 1;
gs->surface = surface;
pixman_region32_init(&gs->texture_damage);
surface->renderer_state = gs;
gs->surface_destroy_listener.notify =
surface_state_handle_surface_destroy;
wl_signal_add(&surface->destroy_signal,
&gs->surface_destroy_listener);
gs->renderer_destroy_listener.notify =
surface_state_handle_renderer_destroy;
wl_signal_add(&gr->destroy_signal,
&gs->renderer_destroy_listener);
if (surface->buffer_ref.buffer) {
gl_renderer_attach(surface, surface->buffer_ref.buffer);
gl_renderer_flush_damage(surface);
}
return 0;
}
static const char vertex_shader[] =
"uniform mat4 proj;\n"
"attribute vec2 position;\n"
"attribute vec2 texcoord;\n"
"varying vec2 v_texcoord;\n"
"void main()\n"
"{\n"
" gl_Position = proj * vec4(position, 0.0, 1.0);\n"
" v_texcoord = texcoord;\n"
"}\n";
/* Declare common fragment shader uniforms */
#define FRAGMENT_CONVERT_YUV \
" y *= alpha;\n" \
" u *= alpha;\n" \
" v *= alpha;\n" \
" gl_FragColor.r = y + 1.59602678 * v;\n" \
" gl_FragColor.g = y - 0.39176229 * u - 0.81296764 * v;\n" \
" gl_FragColor.b = y + 2.01723214 * u;\n" \
" gl_FragColor.a = alpha;\n"
static const char fragment_debug[] =
" gl_FragColor = vec4(0.0, 0.3, 0.0, 0.2) + gl_FragColor * 0.8;\n";
static const char fragment_brace[] =
"}\n";
static const char texture_fragment_shader_rgba[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
"uniform float alpha;\n"
"void main()\n"
"{\n"
" gl_FragColor = alpha * texture2D(tex, v_texcoord)\n;"
;
static const char texture_fragment_shader_rgbx[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
"uniform float alpha;\n"
"void main()\n"
"{\n"
" gl_FragColor.rgb = alpha * texture2D(tex, v_texcoord).rgb\n;"
" gl_FragColor.a = alpha;\n"
;
static const char texture_fragment_shader_egl_external[] =
"#extension GL_OES_EGL_image_external : require\n"
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform samplerExternalOES tex;\n"
"uniform float alpha;\n"
"void main()\n"
"{\n"
" gl_FragColor = alpha * texture2D(tex, v_texcoord)\n;"
;
static const char texture_fragment_shader_y_uv[] =
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"uniform sampler2D tex1;\n"
"varying vec2 v_texcoord;\n"
"uniform float alpha;\n"
"void main() {\n"
" float y = 1.16438356 * (texture2D(tex, v_texcoord).x - 0.0625);\n"
" float u = texture2D(tex1, v_texcoord).r - 0.5;\n"
" float v = texture2D(tex1, v_texcoord).g - 0.5;\n"
FRAGMENT_CONVERT_YUV
;
static const char texture_fragment_shader_y_u_v[] =
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"uniform sampler2D tex1;\n"
"uniform sampler2D tex2;\n"
"varying vec2 v_texcoord;\n"
"uniform float alpha;\n"
"void main() {\n"
" float y = 1.16438356 * (texture2D(tex, v_texcoord).x - 0.0625);\n"
" float u = texture2D(tex1, v_texcoord).x - 0.5;\n"
" float v = texture2D(tex2, v_texcoord).x - 0.5;\n"
FRAGMENT_CONVERT_YUV
;
static const char texture_fragment_shader_y_xuxv[] =
"precision mediump float;\n"
"uniform sampler2D tex;\n"
"uniform sampler2D tex1;\n"
"varying vec2 v_texcoord;\n"
"uniform float alpha;\n"
"void main() {\n"
" float y = 1.16438356 * (texture2D(tex, v_texcoord).x - 0.0625);\n"
" float u = texture2D(tex1, v_texcoord).g - 0.5;\n"
" float v = texture2D(tex1, v_texcoord).a - 0.5;\n"
FRAGMENT_CONVERT_YUV
;
static const char solid_fragment_shader[] =
"precision mediump float;\n"
"uniform vec4 color;\n"
"uniform float alpha;\n"
"void main()\n"
"{\n"
" gl_FragColor = alpha * color\n;"
;
static int
compile_shader(GLenum type, int count, const char **sources)
{
GLuint s;
char msg[512];
GLint status;
s = glCreateShader(type);
glShaderSource(s, count, sources, NULL);
glCompileShader(s);
glGetShaderiv(s, GL_COMPILE_STATUS, &status);
if (!status) {
glGetShaderInfoLog(s, sizeof msg, NULL, msg);
weston_log("shader info: %s\n", msg);
return GL_NONE;
}
return s;
}
static int
shader_init(struct gl_shader *shader, struct gl_renderer *renderer,
const char *vertex_source, const char *fragment_source)
{
char msg[512];
GLint status;
int count;
const char *sources[3];
shader->vertex_shader =
compile_shader(GL_VERTEX_SHADER, 1, &vertex_source);
if (renderer->fragment_shader_debug) {
sources[0] = fragment_source;
sources[1] = fragment_debug;
sources[2] = fragment_brace;
count = 3;
} else {
sources[0] = fragment_source;
sources[1] = fragment_brace;
count = 2;
}
shader->fragment_shader =
compile_shader(GL_FRAGMENT_SHADER, count, sources);
shader->program = glCreateProgram();
glAttachShader(shader->program, shader->vertex_shader);
glAttachShader(shader->program, shader->fragment_shader);
glBindAttribLocation(shader->program, 0, "position");
glBindAttribLocation(shader->program, 1, "texcoord");
glLinkProgram(shader->program);
glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
if (!status) {
glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
weston_log("link info: %s\n", msg);
return -1;
}
shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
shader->tex_uniforms[0] = glGetUniformLocation(shader->program, "tex");
shader->tex_uniforms[1] = glGetUniformLocation(shader->program, "tex1");
shader->tex_uniforms[2] = glGetUniformLocation(shader->program, "tex2");
shader->alpha_uniform = glGetUniformLocation(shader->program, "alpha");
shader->color_uniform = glGetUniformLocation(shader->program, "color");
return 0;
}
static void
shader_release(struct gl_shader *shader)
{
glDeleteShader(shader->vertex_shader);
glDeleteShader(shader->fragment_shader);
glDeleteProgram(shader->program);
shader->vertex_shader = 0;
shader->fragment_shader = 0;
shader->program = 0;
}
static void
log_extensions(const char *name, const char *extensions)
{
const char *p, *end;
int l;
int len;
l = weston_log("%s:", name);
p = extensions;
while (*p) {
end = strchrnul(p, ' ');
len = end - p;
if (l + len > 78)
l = weston_log_continue("\n" STAMP_SPACE "%.*s",
len, p);
else
l += weston_log_continue(" %.*s", len, p);
for (p = end; isspace(*p); p++)
;
}
weston_log_continue("\n");
}
static void
log_egl_gl_info(EGLDisplay egldpy)
{
const char *str;
str = eglQueryString(egldpy, EGL_VERSION);
weston_log("EGL version: %s\n", str ? str : "(null)");
str = eglQueryString(egldpy, EGL_VENDOR);
weston_log("EGL vendor: %s\n", str ? str : "(null)");
str = eglQueryString(egldpy, EGL_CLIENT_APIS);
weston_log("EGL client APIs: %s\n", str ? str : "(null)");
str = eglQueryString(egldpy, EGL_EXTENSIONS);
log_extensions("EGL extensions", str ? str : "(null)");
str = (char *)glGetString(GL_VERSION);
weston_log("GL version: %s\n", str ? str : "(null)");
str = (char *)glGetString(GL_SHADING_LANGUAGE_VERSION);
weston_log("GLSL version: %s\n", str ? str : "(null)");
str = (char *)glGetString(GL_VENDOR);
weston_log("GL vendor: %s\n", str ? str : "(null)");
str = (char *)glGetString(GL_RENDERER);
weston_log("GL renderer: %s\n", str ? str : "(null)");
str = (char *)glGetString(GL_EXTENSIONS);
log_extensions("GL extensions", str ? str : "(null)");
}
static void
log_egl_config_info(EGLDisplay egldpy, EGLConfig eglconfig)
{
EGLint r, g, b, a;
weston_log("Chosen EGL config details:\n");
weston_log_continue(STAMP_SPACE "RGBA bits");
if (eglGetConfigAttrib(egldpy, eglconfig, EGL_RED_SIZE, &r) &&
eglGetConfigAttrib(egldpy, eglconfig, EGL_GREEN_SIZE, &g) &&
eglGetConfigAttrib(egldpy, eglconfig, EGL_BLUE_SIZE, &b) &&
eglGetConfigAttrib(egldpy, eglconfig, EGL_ALPHA_SIZE, &a))
weston_log_continue(": %d %d %d %d\n", r, g, b, a);
else
weston_log_continue(" unknown\n");
weston_log_continue(STAMP_SPACE "swap interval range");
if (eglGetConfigAttrib(egldpy, eglconfig, EGL_MIN_SWAP_INTERVAL, &a) &&
eglGetConfigAttrib(egldpy, eglconfig, EGL_MAX_SWAP_INTERVAL, &b))
weston_log_continue(": %d - %d\n", a, b);
else
weston_log_continue(" unknown\n");
}
static int
match_config_to_visual(EGLDisplay egl_display,
EGLint visual_id,
EGLConfig *configs,
int count)
{
int i;
for (i = 0; i < count; ++i) {
EGLint id;
if (!eglGetConfigAttrib(egl_display,
configs[i], EGL_NATIVE_VISUAL_ID,
&id))
continue;
if (id == visual_id)
return i;
}
return -1;
}
static int
egl_choose_config(struct gl_renderer *gr, const EGLint *attribs,
const EGLint *visual_id, const int n_ids,
EGLConfig *config_out)
{
EGLint count = 0;
EGLint matched = 0;
EGLConfig *configs;
int i, config_index = -1;
if (!eglGetConfigs(gr->egl_display, NULL, 0, &count) || count < 1) {
weston_log("No EGL configs to choose from.\n");
return -1;
}
configs = calloc(count, sizeof *configs);
if (!configs)
return -1;
if (!eglChooseConfig(gr->egl_display, attribs, configs,
count, &matched) || !matched) {
weston_log("No EGL configs with appropriate attributes.\n");
goto out;
}
if (!visual_id || n_ids == 0)
config_index = 0;
for (i = 0; config_index == -1 && i < n_ids; i++)
config_index = match_config_to_visual(gr->egl_display,
visual_id[i],
configs,
matched);
if (config_index != -1)
*config_out = configs[config_index];
out:
free(configs);
if (config_index == -1)
return -1;
if (i > 1)
weston_log("Unable to use first choice EGL config with id"
" 0x%x, succeeded with alternate id 0x%x.\n",
visual_id[0], visual_id[i - 1]);
return 0;
}
static void
gl_renderer_output_set_border(struct weston_output *output,
enum gl_renderer_border_side side,
int32_t width, int32_t height,
int32_t tex_width, unsigned char *data)
{
struct gl_output_state *go = get_output_state(output);
if (go->borders[side].width != width ||
go->borders[side].height != height)
/* In this case, we have to blow everything and do a full
* repaint. */
go->border_status |= BORDER_SIZE_CHANGED | BORDER_ALL_DIRTY;
if (data == NULL) {
width = 0;
height = 0;
}
go->borders[side].width = width;
go->borders[side].height = height;
go->borders[side].tex_width = tex_width;
go->borders[side].data = data;
go->border_status |= 1 << side;
}
static int
gl_renderer_setup(struct weston_compositor *ec, EGLSurface egl_surface);
static int
gl_renderer_output_window_create(struct weston_output *output,
EGLNativeWindowType window_for_legacy,
void *window_for_platform,
const EGLint *config_attribs,
const EGLint *visual_id,
int n_ids)
{
struct weston_compositor *ec = output->compositor;
struct gl_renderer *gr = get_renderer(ec);
struct gl_output_state *go;
EGLConfig egl_config;
int i;
if (egl_choose_config(gr, config_attribs, visual_id,
n_ids, &egl_config) == -1) {
weston_log("failed to choose EGL config for output\n");
return -1;
}
if (egl_config != gr->egl_config &&
!gr->has_configless_context) {
weston_log("attempted to use a different EGL config for an "
"output but EGL_MESA_configless_context is not "
"supported\n");
return -1;
}
go = zalloc(sizeof *go);
if (go == NULL)
return -1;
if (gr->create_platform_window) {
go->egl_surface =
gr->create_platform_window(gr->egl_display,
egl_config,
window_for_platform,
NULL);
} else {
go->egl_surface =
eglCreateWindowSurface(gr->egl_display,
egl_config,
window_for_legacy, NULL);
}
if (go->egl_surface == EGL_NO_SURFACE) {
weston_log("failed to create egl surface\n");
free(go);
return -1;
}
for (i = 0; i < BUFFER_DAMAGE_COUNT; i++)
pixman_region32_init(&go->buffer_damage[i]);
output->renderer_state = go;
log_egl_config_info(gr->egl_display, egl_config);
return 0;
}
static void
gl_renderer_output_destroy(struct weston_output *output)
{
struct gl_renderer *gr = get_renderer(output->compositor);
struct gl_output_state *go = get_output_state(output);
int i;
for (i = 0; i < 2; i++)
pixman_region32_fini(&go->buffer_damage[i]);
eglDestroySurface(gr->egl_display, go->egl_surface);
free(go);
}
static EGLSurface
gl_renderer_output_surface(struct weston_output *output)
{
return get_output_state(output)->egl_surface;
}
static void
gl_renderer_destroy(struct weston_compositor *ec)
{
struct gl_renderer *gr = get_renderer(ec);
struct dmabuf_image *image, *next;
wl_signal_emit(&gr->destroy_signal, gr);
if (gr->has_bind_display)
gr->unbind_display(gr->egl_display, ec->wl_display);
/* Work around crash in egl_dri2.c's dri2_make_current() - when does this apply? */
eglMakeCurrent(gr->egl_display,
EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
wl_list_for_each_safe(image, next, &gr->dmabuf_images, link)
dmabuf_image_destroy(image);
if (gr->dummy_surface != EGL_NO_SURFACE)
eglDestroySurface(gr->egl_display, gr->dummy_surface);
eglTerminate(gr->egl_display);
eglReleaseThread();
wl_list_remove(&gr->output_destroy_listener.link);
wl_array_release(&gr->vertices);
wl_array_release(&gr->vtxcnt);
if (gr->fragment_binding)
weston_binding_destroy(gr->fragment_binding);
if (gr->fan_binding)
weston_binding_destroy(gr->fan_binding);
free(gr);
}
static void
renderer_setup_egl_client_extensions(struct gl_renderer *gr)
{
const char *extensions;
extensions = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
if (!extensions) {
weston_log("Retrieving EGL client extension string failed.\n");
return;
}
if (weston_check_egl_extension(extensions, "EGL_EXT_platform_base"))
gr->create_platform_window =
(void *) eglGetProcAddress("eglCreatePlatformWindowSurfaceEXT");
else
weston_log("warning: EGL_EXT_platform_base not supported.\n");
}
static int
gl_renderer_setup_egl_extensions(struct weston_compositor *ec)
{
struct gl_renderer *gr = get_renderer(ec);
const char *extensions;
EGLBoolean ret;
gr->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
gr->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
gr->bind_display =
(void *) eglGetProcAddress("eglBindWaylandDisplayWL");
gr->unbind_display =
(void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
gr->query_buffer =
(void *) eglGetProcAddress("eglQueryWaylandBufferWL");
extensions =
(const char *) eglQueryString(gr->egl_display, EGL_EXTENSIONS);
if (!extensions) {
weston_log("Retrieving EGL extension string failed.\n");
return -1;
}
if (weston_check_egl_extension(extensions, "EGL_WL_bind_wayland_display"))
gr->has_bind_display = 1;
if (gr->has_bind_display) {
ret = gr->bind_display(gr->egl_display, ec->wl_display);
if (!ret)
gr->has_bind_display = 0;
}
if (weston_check_egl_extension(extensions, "EGL_EXT_buffer_age"))
gr->has_egl_buffer_age = 1;
else
weston_log("warning: EGL_EXT_buffer_age not supported. "
"Performance could be affected.\n");
if (weston_check_egl_extension(extensions, "EGL_EXT_swap_buffers_with_damage"))
gr->swap_buffers_with_damage =
(void *) eglGetProcAddress("eglSwapBuffersWithDamageEXT");
else
weston_log("warning: EGL_EXT_swap_buffers_with_damage not "
"supported. Performance could be affected.\n");
if (weston_check_egl_extension(extensions, "EGL_MESA_configless_context"))
gr->has_configless_context = 1;
if (weston_check_egl_extension(extensions, "EGL_KHR_surfaceless_context"))
gr->has_surfaceless_context = 1;
if (weston_check_egl_extension(extensions, "EGL_EXT_image_dma_buf_import"))
gr->has_dmabuf_import = 1;
if (weston_check_egl_extension(extensions, "GL_EXT_texture_rg"))
gr->has_gl_texture_rg = 1;
renderer_setup_egl_client_extensions(gr);
return 0;
}
static const EGLint gl_renderer_opaque_attribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, 0,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
static const EGLint gl_renderer_alpha_attribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, 1,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
/** Checks whether a platform EGL client extension is supported
*
* \param ec The weston compositor
* \param extension_suffix The EGL client extension suffix
* \return 1 if supported, 0 if using fallbacks, -1 unsupported
*
* This function checks whether a specific platform_* extension is supported
* by EGL.
*
* The extension suffix should be the suffix of the platform extension (that
* specifies a <platform> argument as defined in EGL_EXT_platform_base). For
* example, passing "foo" will check whether either "EGL_KHR_platform_foo",
* "EGL_EXT_platform_foo", or "EGL_MESA_platform_foo" is supported.
*
* The return value is 1:
* - if the supplied EGL client extension is supported.
* The return value is 0:
* - if the platform_base client extension isn't supported so will
* fallback to eglGetDisplay and friends.
* The return value is -1:
* - if the supplied EGL client extension is not supported.
*/
static int
gl_renderer_supports(struct weston_compositor *ec,
const char *extension_suffix)
{
static const char *extensions = NULL;
char s[64];
if (!extensions) {
extensions = (const char *) eglQueryString(
EGL_NO_DISPLAY, EGL_EXTENSIONS);
if (!extensions)
return 0;
log_extensions("EGL client extensions",
extensions);
}
if (!weston_check_egl_extension(extensions, "EGL_EXT_platform_base"))
return 0;
snprintf(s, sizeof s, "EGL_KHR_platform_%s", extension_suffix);
if (weston_check_egl_extension(extensions, s))
return 1;
snprintf(s, sizeof s, "EGL_EXT_platform_%s", extension_suffix);
if (weston_check_egl_extension(extensions, s))
return 1;
snprintf(s, sizeof s, "EGL_MESA_platform_%s", extension_suffix);
if (weston_check_egl_extension(extensions, s))
return 1;
/* at this point we definitely have some platform extensions but
* haven't found the supplied platform, so chances are it's
* not supported. */
return -1;
}
static const char *
platform_to_extension(EGLenum platform)
{
switch (platform) {
case EGL_PLATFORM_GBM_KHR:
return "gbm";
case EGL_PLATFORM_WAYLAND_KHR:
return "wayland";
case EGL_PLATFORM_X11_KHR:
return "x11";
default:
assert(0 && "bad EGL platform enum");
}
}
static void
output_handle_destroy(struct wl_listener *listener, void *data)
{
struct gl_renderer *gr;
struct weston_output *output = data;
gr = container_of(listener, struct gl_renderer,
output_destroy_listener);
if (wl_list_empty(&output->compositor->output_list))
eglMakeCurrent(gr->egl_display, gr->dummy_surface,
gr->dummy_surface, gr->egl_context);
}
static int
gl_renderer_create_pbuffer_surface(struct gl_renderer *gr) {
EGLConfig pbuffer_config;
static const EGLint pbuffer_config_attribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, 0,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
static const EGLint pbuffer_attribs[] = {
EGL_WIDTH, 10,
EGL_HEIGHT, 10,
EGL_NONE
};
if (egl_choose_config(gr, pbuffer_config_attribs, NULL, 0, &pbuffer_config) < 0) {
weston_log("failed to choose EGL config for PbufferSurface");
return -1;
}
gr->dummy_surface = eglCreatePbufferSurface(gr->egl_display,
pbuffer_config,
pbuffer_attribs);
if (gr->dummy_surface == EGL_NO_SURFACE) {
weston_log("failed to create PbufferSurface\n");
return -1;
}
return 0;
}
static int
gl_renderer_display_create(struct weston_compositor *ec, EGLenum platform,
void *native_window, const EGLint *platform_attribs,
const EGLint *config_attribs, const EGLint *visual_id, int n_ids)
{
struct gl_renderer *gr;
EGLint major, minor;
int supports = 0;
if (platform) {
supports = gl_renderer_supports(
ec, platform_to_extension(platform));
if (supports < 0)
return -1;
}
gr = zalloc(sizeof *gr);
if (gr == NULL)
return -1;
gr->base.read_pixels = gl_renderer_read_pixels;
gr->base.repaint_output = gl_renderer_repaint_output;
gr->base.flush_damage = gl_renderer_flush_damage;
gr->base.attach = gl_renderer_attach;
gr->base.surface_set_color = gl_renderer_surface_set_color;
gr->base.destroy = gl_renderer_destroy;
gr->base.surface_get_content_size =
gl_renderer_surface_get_content_size;
gr->base.surface_copy_content = gl_renderer_surface_copy_content;
gr->egl_display = NULL;
/* extension_suffix is supported */
if (supports) {
if (!get_platform_display) {
get_platform_display = (void *) eglGetProcAddress(
"eglGetPlatformDisplayEXT");
}
/* also wrap this in the supports check because
* eglGetProcAddress can return non-NULL and still not
* support the feature at runtime, so ensure the
* appropriate extension checks have been done. */
if (get_platform_display && platform) {
gr->egl_display = get_platform_display(platform,
native_window,
platform_attribs);
}
}
if (!gr->egl_display) {
weston_log("warning: either no EGL_EXT_platform_base "
"support or specific platform support; "
"falling back to eglGetDisplay.\n");
gr->egl_display = eglGetDisplay(native_window);
}
if (gr->egl_display == EGL_NO_DISPLAY) {
weston_log("failed to create display\n");
goto fail;
}
if (!eglInitialize(gr->egl_display, &major, &minor)) {
weston_log("failed to initialize display\n");
goto fail_with_error;
}
if (egl_choose_config(gr, config_attribs, visual_id,
n_ids, &gr->egl_config) < 0) {
weston_log("failed to choose EGL config\n");
goto fail_terminate;
}
ec->renderer = &gr->base;
ec->capabilities |= WESTON_CAP_ROTATION_ANY;
ec->capabilities |= WESTON_CAP_CAPTURE_YFLIP;
ec->capabilities |= WESTON_CAP_VIEW_CLIP_MASK;
if (gl_renderer_setup_egl_extensions(ec) < 0)
goto fail_with_error;
wl_list_init(&gr->dmabuf_images);
if (gr->has_dmabuf_import)
gr->base.import_dmabuf = gl_renderer_import_dmabuf;
if (gr->has_surfaceless_context) {
weston_log("EGL_KHR_surfaceless_context available\n");
gr->dummy_surface = EGL_NO_SURFACE;
} else {
weston_log("EGL_KHR_surfaceless_context unavailable. "
"Trying PbufferSurface\n");
if (gl_renderer_create_pbuffer_surface(gr) < 0)
goto fail_with_error;
}
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_RGB565);
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_YUV420);
wl_display_add_shm_format(ec->wl_display, WL_SHM_FORMAT_NV12);
wl_signal_init(&gr->destroy_signal);
if (gl_renderer_setup(ec, gr->dummy_surface) < 0) {
if (gr->dummy_surface != EGL_NO_SURFACE)
eglDestroySurface(gr->egl_display, gr->dummy_surface);
goto fail_with_error;
}
return 0;
fail_with_error:
gl_renderer_print_egl_error_state();
fail_terminate:
eglTerminate(gr->egl_display);
fail:
free(gr);
return -1;
}
static EGLDisplay
gl_renderer_display(struct weston_compositor *ec)
{
return get_renderer(ec)->egl_display;
}
static int
compile_shaders(struct weston_compositor *ec)
{
struct gl_renderer *gr = get_renderer(ec);
gr->texture_shader_rgba.vertex_source = vertex_shader;
gr->texture_shader_rgba.fragment_source = texture_fragment_shader_rgba;
gr->texture_shader_rgbx.vertex_source = vertex_shader;
gr->texture_shader_rgbx.fragment_source = texture_fragment_shader_rgbx;
gr->texture_shader_egl_external.vertex_source = vertex_shader;
gr->texture_shader_egl_external.fragment_source =
texture_fragment_shader_egl_external;
gr->texture_shader_y_uv.vertex_source = vertex_shader;
gr->texture_shader_y_uv.fragment_source = texture_fragment_shader_y_uv;
gr->texture_shader_y_u_v.vertex_source = vertex_shader;
gr->texture_shader_y_u_v.fragment_source =
texture_fragment_shader_y_u_v;
gr->texture_shader_y_xuxv.vertex_source = vertex_shader;
gr->texture_shader_y_xuxv.fragment_source =
texture_fragment_shader_y_xuxv;
gr->solid_shader.vertex_source = vertex_shader;
gr->solid_shader.fragment_source = solid_fragment_shader;
return 0;
}
static void
fragment_debug_binding(struct weston_keyboard *keyboard, uint32_t time,
uint32_t key, void *data)
{
struct weston_compositor *ec = data;
struct gl_renderer *gr = get_renderer(ec);
struct weston_output *output;
gr->fragment_shader_debug ^= 1;
shader_release(&gr->texture_shader_rgba);
shader_release(&gr->texture_shader_rgbx);
shader_release(&gr->texture_shader_egl_external);
shader_release(&gr->texture_shader_y_uv);
shader_release(&gr->texture_shader_y_u_v);
shader_release(&gr->texture_shader_y_xuxv);
shader_release(&gr->solid_shader);
/* Force use_shader() to call glUseProgram(), since we need to use
* the recompiled version of the shader. */
gr->current_shader = NULL;
wl_list_for_each(output, &ec->output_list, link)
weston_output_damage(output);
}
static void
fan_debug_repaint_binding(struct weston_keyboard *keyboard, uint32_t time,
uint32_t key, void *data)
{
struct weston_compositor *compositor = data;
struct gl_renderer *gr = get_renderer(compositor);
gr->fan_debug = !gr->fan_debug;
weston_compositor_damage_all(compositor);
}
static int
gl_renderer_setup(struct weston_compositor *ec, EGLSurface egl_surface)
{
struct gl_renderer *gr = get_renderer(ec);
const char *extensions;
EGLConfig context_config;
EGLBoolean ret;
static const EGLint context_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
if (!eglBindAPI(EGL_OPENGL_ES_API)) {
weston_log("failed to bind EGL_OPENGL_ES_API\n");
gl_renderer_print_egl_error_state();
return -1;
}
context_config = gr->egl_config;
if (gr->has_configless_context)
context_config = EGL_NO_CONFIG_MESA;
gr->egl_context = eglCreateContext(gr->egl_display, context_config,
EGL_NO_CONTEXT, context_attribs);
if (gr->egl_context == NULL) {
weston_log("failed to create context\n");
gl_renderer_print_egl_error_state();
return -1;
}
ret = eglMakeCurrent(gr->egl_display, egl_surface,
egl_surface, gr->egl_context);
if (ret == EGL_FALSE) {
weston_log("Failed to make EGL context current.\n");
gl_renderer_print_egl_error_state();
return -1;
}
log_egl_gl_info(gr->egl_display);
gr->image_target_texture_2d =
(void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
extensions = (const char *) glGetString(GL_EXTENSIONS);
if (!extensions) {
weston_log("Retrieving GL extension string failed.\n");
return -1;
}
if (!weston_check_egl_extension(extensions, "GL_EXT_texture_format_BGRA8888")) {
weston_log("GL_EXT_texture_format_BGRA8888 not available\n");
return -1;
}
if (weston_check_egl_extension(extensions, "GL_EXT_read_format_bgra"))
ec->read_format = PIXMAN_a8r8g8b8;
else
ec->read_format = PIXMAN_a8b8g8r8;
if (weston_check_egl_extension(extensions, "GL_EXT_unpack_subimage"))
gr->has_unpack_subimage = 1;
if (weston_check_egl_extension(extensions, "GL_OES_EGL_image_external"))
gr->has_egl_image_external = 1;
glActiveTexture(GL_TEXTURE0);
if (compile_shaders(ec))
return -1;
gr->fragment_binding =
weston_compositor_add_debug_binding(ec, KEY_S,
fragment_debug_binding,
ec);
gr->fan_binding =
weston_compositor_add_debug_binding(ec, KEY_F,
fan_debug_repaint_binding,
ec);
gr->output_destroy_listener.notify = output_handle_destroy;
wl_signal_add(&ec->output_destroyed_signal,
&gr->output_destroy_listener);
weston_log("GL ES 2 renderer features:\n");
weston_log_continue(STAMP_SPACE "read-back format: %s\n",
ec->read_format == PIXMAN_a8r8g8b8 ? "BGRA" : "RGBA");
weston_log_continue(STAMP_SPACE "wl_shm sub-image to texture: %s\n",
gr->has_unpack_subimage ? "yes" : "no");
weston_log_continue(STAMP_SPACE "EGL Wayland extension: %s\n",
gr->has_bind_display ? "yes" : "no");
return 0;
}
WL_EXPORT struct gl_renderer_interface gl_renderer_interface = {
.opaque_attribs = gl_renderer_opaque_attribs,
.alpha_attribs = gl_renderer_alpha_attribs,
.display_create = gl_renderer_display_create,
.display = gl_renderer_display,
.output_window_create = gl_renderer_output_window_create,
.output_destroy = gl_renderer_output_destroy,
.output_surface = gl_renderer_output_surface,
.output_set_border = gl_renderer_output_set_border,
.print_egl_error_state = gl_renderer_print_egl_error_state
};
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