diff options
Diffstat (limited to 'src/mesa/state_tracker/st_cb_drawpixels.c')
-rw-r--r-- | src/mesa/state_tracker/st_cb_drawpixels.c | 42 |
1 files changed, 34 insertions, 8 deletions
diff --git a/src/mesa/state_tracker/st_cb_drawpixels.c b/src/mesa/state_tracker/st_cb_drawpixels.c index b88b96e3b2..90f91c39b5 100644 --- a/src/mesa/state_tracker/st_cb_drawpixels.c +++ b/src/mesa/state_tracker/st_cb_drawpixels.c @@ -1219,14 +1219,40 @@ st_CopyPixels(GLcontext *ctx, GLint srcx, GLint srcy, srcy = ctx->DrawBuffer->Height - srcy - height; } - /* copy source framebuffer region into mipmap/texture */ - pipe->region_copy(pipe, - mt->region, /* dest */ - 0, /* dest_offset */ - 0, 0, /* destx/y */ - psRead->region, - 0, /* src_offset */ - srcx, srcy, width, height); + /* For some drivers (like Xlib) it's not possible to treat the + * front/back color buffers as regions (they're XImages and Pixmaps). + * So, this var tells us if we can use region_copy here... + */ + if (st->haveFramebufferRegions) { + /* copy source framebuffer region into mipmap/texture */ + pipe->region_copy(pipe, + mt->region, /* dest */ + 0, /* dest_offset */ + 0, 0, /* destx/y */ + psRead->region, + 0, /* src_offset */ + srcx, srcy, width, height); + } + else { + /* alternate path using get/put_tile() */ + struct pipe_surface *psTex; + GLfloat *buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat)); + + psTex = pipe->get_tex_surface(pipe, mt, 0, 0, 0); + + (void) pipe->region_map(pipe, psRead->region); + (void) pipe->region_map(pipe, psTex->region); + + psRead->get_tile(psRead, srcx, srcy, width, height, buf); + psTex->put_tile(psTex, 0, 0, width, height, buf); + + pipe->region_unmap(pipe, psRead->region); + pipe->region_unmap(pipe, psTex->region); + + pipe_surface_reference(&psTex, NULL); + + free(buf); + } /* draw textured quad */ |