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Nuklear/demo/d3d9/nuklear_d3d9.h

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/*
* Nuklear - 1.32.0 - public domain
* no warrenty implied; use at your own risk.
* authored from 2015-2016 by Micha Mettke
*/
/*
* ==============================================================
*
* API
*
* ===============================================================
*/
#ifndef NK_D3D9_H_
#define NK_D3D9_H_
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
typedef struct IDirect3DDevice9 IDirect3DDevice9;
NK_API struct nk_context *nk_d3d9_init(IDirect3DDevice9 *device, int width, int height);
NK_API void nk_d3d9_font_stash_begin(struct nk_font_atlas **atlas);
NK_API void nk_d3d9_font_stash_end(void);
NK_API int nk_d3d9_handle_event(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam);
NK_API void nk_d3d9_render(enum nk_anti_aliasing);
NK_API void nk_d3d9_release(void);
NK_API void nk_d3d9_resize(int width, int height);
NK_API void nk_d3d9_shutdown(void);
#endif
/*
* ==============================================================
*
* IMPLEMENTATION
*
* ===============================================================
*/
#ifdef NK_D3D9_IMPLEMENTATION
#define WIN32_LEAN_AND_MEAN
#define COBJMACROS
#include <d3d9.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
struct nk_d3d9_vertex {
/* D3d9 FFP requires three coordinate position, but nuklear writes only 2 elements
projection matrix doesn't use z coordinate => so it can be any value.
Member order here is important! Do not rearrange them! */
float position[3];
nk_uchar col[4];
float uv[2];
};
static struct {
struct nk_context ctx;
struct nk_font_atlas atlas;
struct nk_buffer cmds;
struct nk_draw_null_texture tex_null;
D3DVIEWPORT9 viewport;
D3DMATRIX projection;
IDirect3DDevice9 *device;
IDirect3DTexture9 *texture;
IDirect3DStateBlock9 *state;
} d3d9;
NK_API void
nk_d3d9_create_state()
{
HRESULT hr;
hr = IDirect3DDevice9_BeginStateBlock(d3d9.device);
NK_ASSERT(SUCCEEDED(hr));
/* vertex format */
IDirect3DDevice9_SetFVF(d3d9.device, D3DFVF_XYZ + D3DFVF_DIFFUSE + D3DFVF_TEX1);
/* blend state */
IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_ALPHABLENDENABLE, TRUE);
IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_BLENDOP, D3DBLENDOP_ADD);
/* render state */
IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_LIGHTING, FALSE);
IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_ZENABLE, FALSE);
IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_ZWRITEENABLE, FALSE);
IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_CULLMODE, D3DCULL_NONE);
IDirect3DDevice9_SetRenderState(d3d9.device, D3DRS_SCISSORTESTENABLE, TRUE);
/* sampler state */
IDirect3DDevice9_SetSamplerState(d3d9.device, 0, D3DSAMP_ADDRESSU, D3DTADDRESS_CLAMP);
IDirect3DDevice9_SetSamplerState(d3d9.device, 0, D3DSAMP_ADDRESSV, D3DTADDRESS_CLAMP);
IDirect3DDevice9_SetSamplerState(d3d9.device, 0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
IDirect3DDevice9_SetSamplerState(d3d9.device, 0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
/* texture stage state */
IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_COLOROP, D3DTOP_MODULATE);
IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE);
IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
IDirect3DDevice9_SetTextureStageState(d3d9.device, 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE);
hr = IDirect3DDevice9_EndStateBlock(d3d9.device, &d3d9.state);
NK_ASSERT(SUCCEEDED(hr));
}
NK_API void
nk_d3d9_render(enum nk_anti_aliasing AA)
{
HRESULT hr;
nk_d3d9_create_state();
hr = IDirect3DStateBlock9_Apply(d3d9.state);
NK_ASSERT(SUCCEEDED(hr));
/* projection matrix */
IDirect3DDevice9_SetTransform(d3d9.device, D3DTS_PROJECTION, &d3d9.projection);
/* viewport */
IDirect3DDevice9_SetViewport(d3d9.device, &d3d9.viewport);
/* convert from command queue into draw list and draw to screen */
{
struct nk_buffer vbuf, ebuf;
const struct nk_draw_command *cmd;
const nk_draw_index *offset = NULL;
UINT vertex_count;
/* fill converting configuration */
struct nk_convert_config config;
NK_STORAGE const struct nk_draw_vertex_layout_element vertex_layout[] = {
{NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_d3d9_vertex, position)},
{NK_VERTEX_COLOR, NK_FORMAT_B8G8R8A8, NK_OFFSETOF(struct nk_d3d9_vertex, col)},
{NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_d3d9_vertex, uv)},
{NK_VERTEX_LAYOUT_END}
};
memset(&config, 0, sizeof(config));
config.vertex_layout = vertex_layout;
config.vertex_size = sizeof(struct nk_d3d9_vertex);
config.vertex_alignment = NK_ALIGNOF(struct nk_d3d9_vertex);
config.global_alpha = 1.0f;
config.shape_AA = AA;
config.line_AA = AA;
config.circle_segment_count = 22;
config.curve_segment_count = 22;
config.arc_segment_count = 22;
config.tex_null = d3d9.tex_null;
/* convert shapes into vertexes */
nk_buffer_init_default(&vbuf);
nk_buffer_init_default(&ebuf);
nk_convert(&d3d9.ctx, &d3d9.cmds, &vbuf, &ebuf, &config);
/* iterate over and execute each draw command */
offset = (const nk_draw_index *)nk_buffer_memory_const(&ebuf);
vertex_count = (UINT)vbuf.needed / sizeof(struct nk_d3d9_vertex);
nk_draw_foreach(cmd, &d3d9.ctx, &d3d9.cmds)
{
RECT scissor;
if (!cmd->elem_count) continue;
hr = IDirect3DDevice9_SetTexture(d3d9.device, 0, (IDirect3DBaseTexture9 *)cmd->texture.ptr);
NK_ASSERT(SUCCEEDED(hr));
scissor.left = (LONG)cmd->clip_rect.x;
scissor.right = (LONG)(cmd->clip_rect.x + cmd->clip_rect.w);
scissor.top = (LONG)cmd->clip_rect.y;
scissor.bottom = (LONG)(cmd->clip_rect.y + cmd->clip_rect.h);
hr = IDirect3DDevice9_SetScissorRect(d3d9.device, &scissor);
NK_ASSERT(SUCCEEDED(hr));
NK_ASSERT(sizeof(nk_draw_index) == sizeof(NK_UINT16));
hr = IDirect3DDevice9_DrawIndexedPrimitiveUP(d3d9.device, D3DPT_TRIANGLELIST,
0, vertex_count, cmd->elem_count/3, offset, D3DFMT_INDEX16,
nk_buffer_memory_const(&vbuf), sizeof(struct nk_d3d9_vertex));
NK_ASSERT(SUCCEEDED(hr));
offset += cmd->elem_count;
}
nk_buffer_free(&vbuf);
nk_buffer_free(&ebuf);
}
nk_clear(&d3d9.ctx);
nk_buffer_clear(&d3d9.cmds);
IDirect3DStateBlock9_Apply(d3d9.state);
IDirect3DStateBlock9_Release(d3d9.state);
}
static void
nk_d3d9_get_projection_matrix(int width, int height, float *result)
{
const float L = 0.5f;
const float R = (float)width + 0.5f;
const float T = 0.5f;
const float B = (float)height + 0.5f;
float matrix[4][4] = {
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f },
};
matrix[0][0] = 2.0f / (R - L);
matrix[1][1] = 2.0f / (T - B);
matrix[3][0] = (R + L) / (L - R);
matrix[3][1] = (T + B) / (B - T);
memcpy(result, matrix, sizeof(matrix));
}
NK_API void
nk_d3d9_release(void)
{
IDirect3DTexture9_Release(d3d9.texture);
}
static void
nk_d3d9_create_font_texture()
{
int w, h, y;
const void *image;
HRESULT hr;
D3DLOCKED_RECT locked;
image = nk_font_atlas_bake(&d3d9.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
hr = IDirect3DDevice9_CreateTexture(d3d9.device, w, h, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &d3d9.texture, NULL);
NK_ASSERT(SUCCEEDED(hr));
hr = IDirect3DTexture9_LockRect(d3d9.texture, 0, &locked, NULL, 0);
NK_ASSERT(SUCCEEDED(hr));
for (y = 0; y < h; y++) {
void *src = (char *)image + y * w * 4;
void *dst = (char *)locked.pBits + y * locked.Pitch;
memcpy(dst, src, w * 4);
}
hr = IDirect3DTexture9_UnlockRect(d3d9.texture, 0);
NK_ASSERT(SUCCEEDED(hr));
nk_font_atlas_end(&d3d9.atlas, nk_handle_ptr(d3d9.texture), &d3d9.tex_null);
}
NK_API void
nk_d3d9_resize(int width, int height)
{
if (d3d9.texture) {
nk_d3d9_create_font_texture();
}
nk_d3d9_create_state();
nk_d3d9_get_projection_matrix(width, height, &d3d9.projection.m[0][0]);
d3d9.viewport.Width = width;
d3d9.viewport.Height = height;
}
NK_API int
nk_d3d9_handle_event(HWND wnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
switch (msg)
{
case WM_KEYDOWN:
case WM_KEYUP:
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
{
int down = !((lparam >> 31) & 1);
int ctrl = GetKeyState(VK_CONTROL) & (1 << 15);
switch (wparam)
{
case VK_SHIFT:
case VK_LSHIFT:
case VK_RSHIFT:
nk_input_key(&d3d9.ctx, NK_KEY_SHIFT, down);
return 1;
case VK_DELETE:
nk_input_key(&d3d9.ctx, NK_KEY_DEL, down);
return 1;
case VK_RETURN:
nk_input_key(&d3d9.ctx, NK_KEY_ENTER, down);
return 1;
case VK_TAB:
nk_input_key(&d3d9.ctx, NK_KEY_TAB, down);
return 1;
case VK_LEFT:
if (ctrl)
nk_input_key(&d3d9.ctx, NK_KEY_TEXT_WORD_LEFT, down);
else
nk_input_key(&d3d9.ctx, NK_KEY_LEFT, down);
return 1;
case VK_RIGHT:
if (ctrl)
nk_input_key(&d3d9.ctx, NK_KEY_TEXT_WORD_RIGHT, down);
else
nk_input_key(&d3d9.ctx, NK_KEY_RIGHT, down);
return 1;
case VK_BACK:
nk_input_key(&d3d9.ctx, NK_KEY_BACKSPACE, down);
return 1;
case VK_HOME:
nk_input_key(&d3d9.ctx, NK_KEY_TEXT_START, down);
nk_input_key(&d3d9.ctx, NK_KEY_SCROLL_START, down);
return 1;
case VK_END:
nk_input_key(&d3d9.ctx, NK_KEY_TEXT_END, down);
nk_input_key(&d3d9.ctx, NK_KEY_SCROLL_END, down);
return 1;
case VK_NEXT:
nk_input_key(&d3d9.ctx, NK_KEY_SCROLL_DOWN, down);
return 1;
case VK_PRIOR:
nk_input_key(&d3d9.ctx, NK_KEY_SCROLL_UP, down);
return 1;
case 'C':
if (ctrl) {
nk_input_key(&d3d9.ctx, NK_KEY_COPY, down);
return 1;
}
break;
case 'V':
if (ctrl) {
nk_input_key(&d3d9.ctx, NK_KEY_PASTE, down);
return 1;
}
break;
case 'X':
if (ctrl) {
nk_input_key(&d3d9.ctx, NK_KEY_CUT, down);
return 1;
}
break;
case 'Z':
if (ctrl) {
nk_input_key(&d3d9.ctx, NK_KEY_TEXT_UNDO, down);
return 1;
}
break;
case 'R':
if (ctrl) {
nk_input_key(&d3d9.ctx, NK_KEY_TEXT_REDO, down);
return 1;
}
break;
}
return 0;
}
case WM_CHAR:
if (wparam >= 32)
{
nk_input_unicode(&d3d9.ctx, (nk_rune)wparam);
return 1;
}
break;
case WM_LBUTTONDOWN:
nk_input_button(&d3d9.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1);
SetCapture(wnd);
return 1;
case WM_LBUTTONUP:
nk_input_button(&d3d9.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0);
nk_input_button(&d3d9.ctx, NK_BUTTON_LEFT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0);
ReleaseCapture();
return 1;
case WM_RBUTTONDOWN:
nk_input_button(&d3d9.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 1);
SetCapture(wnd);
return 1;
case WM_RBUTTONUP:
nk_input_button(&d3d9.ctx, NK_BUTTON_RIGHT, (short)LOWORD(lparam), (short)HIWORD(lparam), 0);
ReleaseCapture();
return 1;
case WM_MBUTTONDOWN:
nk_input_button(&d3d9.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1);
SetCapture(wnd);
return 1;
case WM_MBUTTONUP:
nk_input_button(&d3d9.ctx, NK_BUTTON_MIDDLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 0);
ReleaseCapture();
return 1;
case WM_MOUSEWHEEL:
nk_input_scroll(&d3d9.ctx, nk_vec2(0,(float)(short)HIWORD(wparam) / WHEEL_DELTA));
return 1;
case WM_MOUSEMOVE:
nk_input_motion(&d3d9.ctx, (short)LOWORD(lparam), (short)HIWORD(lparam));
return 1;
case WM_LBUTTONDBLCLK:
nk_input_button(&d3d9.ctx, NK_BUTTON_DOUBLE, (short)LOWORD(lparam), (short)HIWORD(lparam), 1);
return 1;
}
return 0;
}
static void
nk_d3d9_clipboard_paste(nk_handle usr, struct nk_text_edit *edit)
{
HGLOBAL mem;
SIZE_T size;
LPCWSTR wstr;
int utf8size;
(void)usr;
if (!IsClipboardFormatAvailable(CF_UNICODETEXT) && OpenClipboard(NULL)) {
return;
}
mem = GetClipboardData(CF_UNICODETEXT);
if (!mem) {
CloseClipboard();
return;
}
size = GlobalSize(mem) - 1;
if (!size) {
CloseClipboard();
return;
}
wstr = (LPCWSTR)GlobalLock(mem);
if (!wstr) {
CloseClipboard();
return;
}
utf8size = WideCharToMultiByte(CP_UTF8, 0, wstr, (int)size / sizeof(wchar_t), NULL, 0, NULL, NULL);
if (utf8size) {
char *utf8 = (char *)malloc(utf8size);
if (utf8) {
WideCharToMultiByte(CP_UTF8, 0, wstr, (int)size / sizeof(wchar_t), utf8, utf8size, NULL, NULL);
nk_textedit_paste(edit, utf8, utf8size);
free(utf8);
}
}
GlobalUnlock(mem);
CloseClipboard();
}
static void
nk_d3d9_clipboard_copy(nk_handle usr, const char *text, int len)
{
int wsize;
(void)usr;
if (!OpenClipboard(NULL)) {
return;
}
wsize = MultiByteToWideChar(CP_UTF8, 0, text, len, NULL, 0);
if (wsize) {
HGLOBAL mem = GlobalAlloc(GMEM_MOVEABLE, (wsize + 1) * sizeof(wchar_t));
if (mem) {
wchar_t *wstr = (wchar_t*)GlobalLock(mem);
if (wstr) {
MultiByteToWideChar(CP_UTF8, 0, text, len, wstr, wsize);
wstr[wsize] = 0;
GlobalUnlock(mem);
SetClipboardData(CF_UNICODETEXT, mem);
}
}
}
CloseClipboard();
}
NK_API struct nk_context*
nk_d3d9_init(IDirect3DDevice9 *device, int width, int height)
{
d3d9.device = device;
IDirect3DDevice9_AddRef(device);
nk_init_default(&d3d9.ctx, 0);
d3d9.state = NULL;
d3d9.texture = NULL;
d3d9.ctx.clip.copy = nk_d3d9_clipboard_copy;
d3d9.ctx.clip.paste = nk_d3d9_clipboard_paste;
d3d9.ctx.clip.userdata = nk_handle_ptr(0);
nk_buffer_init_default(&d3d9.cmds);
/* viewport */
d3d9.viewport.X = 0;
d3d9.viewport.Y = 0;
d3d9.viewport.MinZ = 0.0f;
d3d9.viewport.MaxZ = 1.0f;
nk_d3d9_resize(width, height);
return &d3d9.ctx;
}
NK_API void
nk_d3d9_font_stash_begin(struct nk_font_atlas **atlas)
{
nk_font_atlas_init_default(&d3d9.atlas);
nk_font_atlas_begin(&d3d9.atlas);
*atlas = &d3d9.atlas;
}
NK_API void
nk_d3d9_font_stash_end(void)
{
nk_d3d9_create_font_texture();
if (d3d9.atlas.default_font)
nk_style_set_font(&d3d9.ctx, &d3d9.atlas.default_font->handle);
}
NK_API
void nk_d3d9_shutdown(void)
{
nk_d3d9_release();
nk_font_atlas_clear(&d3d9.atlas);
nk_buffer_free(&d3d9.cmds);
nk_free(&d3d9.ctx);
}
#endif
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