diff options
| -rw-r--r-- | src/mesa/state_tracker/st_cb_bitmap.c | 72 |
1 files changed, 52 insertions, 20 deletions
diff --git a/src/mesa/state_tracker/st_cb_bitmap.c b/src/mesa/state_tracker/st_cb_bitmap.c index b600b92dc6e..ec56b25f7ce 100644 --- a/src/mesa/state_tracker/st_cb_bitmap.c +++ b/src/mesa/state_tracker/st_cb_bitmap.c @@ -73,12 +73,14 @@ static GLboolean UseBitmapCache = GL_TRUE; struct bitmap_cache { - /** An I8 texture image: */ - GLubyte buffer[BITMAP_CACHE_HEIGHT][BITMAP_CACHE_WIDTH]; - GLboolean empty; /** Window pos to render the cached image */ GLint xpos, ypos; + /** Bounds of region used in window coords */ + GLint xmin, ymin, xmax, ymax; struct pipe_texture *texture; + GLboolean empty; + /** An I8 texture image: */ + GLubyte buffer[BITMAP_CACHE_HEIGHT][BITMAP_CACHE_WIDTH]; }; @@ -493,6 +495,18 @@ draw_bitmap_quad(GLcontext *ctx, GLint x, GLint y, GLfloat z, } +static void +reset_cache(struct st_context *st) +{ + memset(st->bitmap.cache->buffer, 0, sizeof(st->bitmap.cache->buffer)); + st->bitmap.cache->empty = GL_TRUE; + + st->bitmap.cache->xmin = 1000000; + st->bitmap.cache->xmax = -1000000; + st->bitmap.cache->ymin = 1000000; + st->bitmap.cache->ymax = -1000000; +} + static void init_bitmap_cache(struct st_context *st) @@ -523,7 +537,7 @@ init_bitmap_cache(struct st_context *st) return; } - st->bitmap.cache->empty = GL_TRUE; + reset_cache(st); } @@ -534,29 +548,37 @@ void st_flush_bitmap_cache(struct st_context *st) { if (!st->bitmap.cache->empty) { + struct bitmap_cache *cache = st->bitmap.cache; struct pipe_context *pipe = st->pipe; struct pipe_screen *screen = pipe->screen; struct pipe_surface *surf; void *dest; + assert(cache->xmin <= cache->xmax); + /* + printf("flush size %d x %d at %d, %d\n", + cache->xmax - cache->xmin, + cache->ymax - cache->ymin, + cache->xpos, cache->ypos); + */ + /* update the texture map image */ - surf = screen->get_tex_surface(screen, st->bitmap.cache->texture, 0, 0, 0); + surf = screen->get_tex_surface(screen, cache->texture, 0, 0, 0); dest = pipe_surface_map(surf); - memcpy(dest, st->bitmap.cache->buffer, sizeof(st->bitmap.cache->buffer)); + memcpy(dest, cache->buffer, sizeof(cache->buffer)); pipe_surface_unmap(surf); pipe_surface_reference(&surf, NULL); - pipe->texture_update(pipe, st->bitmap.cache->texture, 0, 0x1); + pipe->texture_update(pipe, cache->texture, 0, 0x1); draw_bitmap_quad(st->ctx, - st->bitmap.cache->xpos, - st->bitmap.cache->ypos, + cache->xpos, + cache->ypos, st->ctx->Current.RasterPos[2], BITMAP_CACHE_WIDTH, BITMAP_CACHE_HEIGHT, - st->bitmap.cache->texture); + cache->texture); - memset(st->bitmap.cache->buffer, 0, sizeof(st->bitmap.cache->buffer)); - st->bitmap.cache->empty = GL_TRUE; + reset_cache(st); } } @@ -571,6 +593,7 @@ accum_bitmap(struct st_context *st, const struct gl_pixelstore_attrib *unpack, const GLubyte *bitmap ) { + struct bitmap_cache *cache = st->bitmap.cache; int row, col; int px = -999, py; @@ -578,9 +601,9 @@ accum_bitmap(struct st_context *st, height > BITMAP_CACHE_HEIGHT) return GL_FALSE; /* too big to cache */ - if (!st->bitmap.cache->empty) { - px = x - st->bitmap.cache->xpos; /* pos in buffer */ - py = y - st->bitmap.cache->ypos; + if (!cache->empty) { + px = x - cache->xpos; /* pos in buffer */ + py = y - cache->ypos; if (px < 0 || px + width > BITMAP_CACHE_WIDTH || py < 0 || py + height > BITMAP_CACHE_HEIGHT) { /* This bitmap would extend beyond cache bounds, @@ -590,20 +613,29 @@ accum_bitmap(struct st_context *st, } } - if (st->bitmap.cache->empty) { + if (cache->empty) { /* Initialize. Center bitmap vertically in the buffer. */ px = 0; py = (BITMAP_CACHE_HEIGHT - height) / 2; - st->bitmap.cache->xpos = x; - st->bitmap.cache->ypos = y - py; - st->bitmap.cache->empty = GL_FALSE; + cache->xpos = x; + cache->ypos = y - py; + cache->empty = GL_FALSE; } assert(px != -999); + if (x < cache->xmin) + cache->xmin = x; + if (y < cache->ymin) + cache->ymin = y; + if (x + width > cache->xmax) + cache->xmax = x + width; + if (y + height > cache->ymax) + cache->ymax = y + height; + /* XXX try to combine this code with code in make_bitmap_texture() */ #define SET_PIXEL(COL, ROW) \ - st->bitmap.cache->buffer[py + (ROW)][px + (COL)] = 0xff; + cache->buffer[py + (ROW)][px + (COL)] = 0xff; for (row = 0; row < height; row++) { const GLubyte *src = (const GLubyte *) _mesa_image_address2d(unpack, |