diff options
| -rw-r--r-- | src/mesa/state_tracker/st_cb_bitmap.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/mesa/state_tracker/st_cb_bitmap.c b/src/mesa/state_tracker/st_cb_bitmap.c index 8709633557c..ccf972f8055 100644 --- a/src/mesa/state_tracker/st_cb_bitmap.c +++ b/src/mesa/state_tracker/st_cb_bitmap.c @@ -94,6 +94,9 @@ struct bitmap_cache GLfloat color[4]; + /** Bitmap's Z position */ + GLfloat zpos; + struct pipe_texture *texture; struct pipe_transfer *trans; @@ -104,6 +107,8 @@ struct bitmap_cache }; +/** Epsilon for Z comparisons */ +#define Z_EPSILON 1e-06 /** @@ -538,9 +543,7 @@ draw_bitmap_quad(GLcontext *ctx, GLint x, GLint y, GLfloat z, } /* draw textured quad */ - offset = setup_bitmap_vertex_data(st, x, y, width, height, - ctx->Current.RasterPos[2], - color); + offset = setup_bitmap_vertex_data(st, x, y, width, height, z, color); util_draw_vertex_buffer(pipe, st->bitmap.vbuf, offset, PIPE_PRIM_TRIANGLE_FAN, @@ -647,7 +650,7 @@ st_flush_bitmap_cache(struct st_context *st) draw_bitmap_quad(st->ctx, cache->xpos, cache->ypos, - st->ctx->Current.RasterPos[2], + cache->zpos, BITMAP_CACHE_WIDTH, BITMAP_CACHE_HEIGHT, cache->texture, cache->color); @@ -687,6 +690,7 @@ accum_bitmap(struct st_context *st, { struct bitmap_cache *cache = st->bitmap.cache; int px = -999, py; + const GLfloat z = st->ctx->Current.RasterPos[2]; if (width > BITMAP_CACHE_WIDTH || height > BITMAP_CACHE_HEIGHT) @@ -697,7 +701,8 @@ accum_bitmap(struct st_context *st, py = y - cache->ypos; if (px < 0 || px + width > BITMAP_CACHE_WIDTH || py < 0 || py + height > BITMAP_CACHE_HEIGHT || - !TEST_EQ_4V(st->ctx->Current.RasterColor, cache->color)) { + !TEST_EQ_4V(st->ctx->Current.RasterColor, cache->color) || + ((fabs(z - cache->zpos) > Z_EPSILON))) { /* This bitmap would extend beyond cache bounds, or the bitmap * color is changing * so flush and continue. @@ -712,6 +717,7 @@ accum_bitmap(struct st_context *st, py = (BITMAP_CACHE_HEIGHT - height) / 2; cache->xpos = x; cache->ypos = y - py; + cache->zpos = z; cache->empty = GL_FALSE; COPY_4FV(cache->color, st->ctx->Current.RasterColor); } |