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[project @ 2004-07-20 00:19:20 by rjw] 

Support for 16bpp and 32bpp screenmodes. Removed debug code. Improved memory calculations.

svn path=/import/netsurf/; revision=1123
This commit is contained in:
Richard Wilson 2004-07-20 00:19:20 +00:00
parent c86876257a
commit 7f089d63cf
1 changed files with 24 additions and 13 deletions
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37
riscos/buffer.c
View File

@ -38,6 +38,10 @@
*/
static osspriteop_area *buffer = NULL;
/** The sprite name
*/
static char name[12];
/** The current clip area
*/
static os_box clipping;
@ -60,7 +64,8 @@ void ro_gui_buffer_open(wimp_draw *redraw) {
int orig_x0, orig_y0;
int buffer_size;
os_coord sprite_size;
os_error *error;
int bpp, word_size;
osbool palette;
/* Close any open buffer
*/
@ -76,23 +81,31 @@ void ro_gui_buffer_open(wimp_draw *redraw) {
sprite_size.y = clipping.y1 - clipping.y0 + 1;
ro_convert_os_units_to_pixels(&sprite_size, (os_mode)-1);
/* Create our buffer (assume 32bpp for now (!))
/* Get the screen depth as we can't use palettes for >8bpp
*/
xos_read_mode_variable((os_mode)-1, os_MODEVAR_LOG2_BPP, &bpp, 0);
palette = (bpp < 4) ? 1 : 0;
/* Create our buffer
*/
word_size = (((sprite_size.x << bpp) >> 3) + 32) & ~3;
buffer_size = sizeof(osspriteop_area) + sizeof(osspriteop_header) +
(sprite_size.x * sprite_size.y * 4) + 2048;
(word_size * sprite_size.y);
if (palette) buffer_size += ((1 << (1 << bpp)) << 3);
if (!(buffer = (osspriteop_area *)malloc(buffer_size))) return;
/* Fill in the sprite area details
*/
buffer->size = buffer_size;
buffer->size = buffer_size + 1;
buffer->sprite_count = 0;
buffer->first = 16;
buffer->used = 16;
/* Fill in the sprite header details
*/
sprintf(name, "buffer");
if (xosspriteop_get_sprite_user_coords(osspriteop_NAME, buffer,
"buffer", (osbool)1,
name, palette,
clipping.x0, clipping.y0, clipping.x1, clipping.y1)) {
free(buffer);
buffer = NULL;
@ -101,9 +114,8 @@ void ro_gui_buffer_open(wimp_draw *redraw) {
/* Allocate OS_SpriteOp save area
*/
if ((error = xosspriteop_read_save_area_size(osspriteop_NAME, buffer,
(osspriteop_id)"buffer", &size))) {
LOG(("Save error: %s", error->errmess));
if (xosspriteop_read_save_area_size(osspriteop_NAME, buffer,
(osspriteop_id)name, &size)) {
free(buffer);
buffer = NULL;
return;
@ -117,10 +129,9 @@ void ro_gui_buffer_open(wimp_draw *redraw) {
/* Switch output to sprite
*/
if ((error = xosspriteop_switch_output_to_sprite(osspriteop_NAME, buffer,
(osspriteop_id)"buffer", save_area,
0, (int *)&context1, (int *)&context2, (int *)&context3))) {
LOG(("Switching error: %s", error->errmess));
if (xosspriteop_switch_output_to_sprite(osspriteop_NAME, buffer,
(osspriteop_id)name, save_area,
0, (int *)&context1, (int *)&context2, (int *)&context3)) {
free(save_area);
free(buffer);
buffer = NULL;
@ -158,7 +169,7 @@ void ro_gui_buffer_close(void) {
/* Plot the contents to screen
*/
xosspriteop_put_sprite_user_coords(osspriteop_NAME,
buffer, (osspriteop_id)"buffer",
buffer, (osspriteop_id)name,
clipping.x0, clipping.y0, (os_action)0);
/* Free our memory