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authorMichal Krol <michal@vmware.com>2009-03-16 16:48:18 +0100
committerMichal Krol <michal@vmware.com>2009-03-16 16:48:18 +0100
commitd8445e8fe1cea08e4b3e6f510a82360b76977937 (patch)
tree6c82cdc3d8b766592b25f297cf3163eea4684597 /src/gallium/state_trackers/python
parentfcf93aa06d9894d2343c5d64c2c5342f8e2c6e60 (diff)
python: Use transfer object to read from a surface.
Diffstat (limited to 'src/gallium/state_trackers/python')
-rw-r--r--src/gallium/state_trackers/python/st_sample.c48
1 files changed, 32 insertions, 16 deletions
diff --git a/src/gallium/state_trackers/python/st_sample.c b/src/gallium/state_trackers/python/st_sample.c
index 7765df3c4a..092b7f3924 100644
--- a/src/gallium/state_trackers/python/st_sample.c
+++ b/src/gallium/state_trackers/python/st_sample.c
@@ -524,26 +524,42 @@ st_sample_pixel_block(enum pipe_format format,
void
st_sample_surface(struct pipe_surface *surface, float *rgba)
{
- const struct pipe_format_block *block = &surface->block;
- unsigned rgba_stride = surface->width*4;
+ struct pipe_screen *screen = surface->texture->screen;
+ uint rgba_stride = surface->width * 4;
+ struct pipe_transfer *transfer;
void *raw;
- unsigned x, y;
- raw = pipe_surface_map(surface, PIPE_BUFFER_USAGE_CPU_READ);
- if(!raw)
+ transfer = screen->get_tex_transfer(screen,
+ surface->texture,
+ surface->face,
+ surface->level,
+ surface->zslice,
+ PIPE_TRANSFER_READ,
+ 0, 0,
+ surface->width,
+ surface->height);
+ if (!transfer)
return;
- for (y = 0; y < surface->nblocksy; ++y) {
- for(x = 0; x < surface->nblocksx; ++x) {
- st_sample_pixel_block(surface->format,
- block,
- (uint8_t*)raw + y*surface->stride + x*block->size,
- rgba + y*block->height*rgba_stride + x*block->width*4,
- rgba_stride,
- MIN2(block->width, surface->width - x*block->width),
- MIN2(block->height, surface->height - y*block->height));
- }
+ raw = screen->transfer_map(screen, transfer);
+ if (raw) {
+ const struct pipe_format_block *block = &transfer->block;
+ uint x, y;
+
+ for (y = 0; y < transfer->nblocksy; ++y) {
+ for (x = 0; x < transfer->nblocksx; ++x) {
+ st_sample_pixel_block(surface->format,
+ block,
+ (uint8_t *) raw + y * transfer->stride + x * block->size,
+ rgba + y * block->height * rgba_stride + x * block->width * 4,
+ rgba_stride,
+ MIN2(block->width, surface->width - x*block->width),
+ MIN2(block->height, surface->height - y*block->height));
+ }
+ }
+
+ screen->transfer_unmap(screen, transfer);
}
- pipe_surface_unmap(surface);
+ screen->tex_transfer_destroy(transfer);
}