/* Break the COW tie to the pbo. Both the pbo and the region end up
* with a copy of the data.
*/
void
intel_region_cow(struct intel_context *intel, struct intel_region *region)
{
struct intel_buffer_object *pbo = region->pbo;
GLboolean was_locked = intel->locked;
if (intel == NULL)
return;
intel_region_release_pbo(intel, region);
assert(region->cpp * region->pitch * region->height == pbo->Base.Size);
DBG("%s (%d bytes)\n", __FUNCTION__, pbo->Base.Size);
/* Now blit from the texture buffer to the new buffer:
*/
was_locked = intel->locked;
if (!was_locked)
LOCK_HARDWARE(intel);
intelEmitCopyBlit(intel,
region->cpp,
region->pitch, region->buffer, 0, region->tiling,
region->pitch, pbo->buffer, 0, region->tiling,
0, 0, 0, 0,
region->pitch, region->height,
GL_COPY);
if (!was_locked)
UNLOCK_HARDWARE(intel);
}
/* Fill a rectangular sub-region. Need better logic about when to
* push buffers into AGP - will currently do so whenever possible.
*/
void
intel_region_fill(struct intel_context *intel,
struct intel_region *dst,
GLuint dst_offset,
GLuint dstx, GLuint dsty,
GLuint width, GLuint height, GLuint color)
{
DBG("%s\n", __FUNCTION__);
if (intel == NULL)
return;
if (dst->pbo) {
if (dstx == 0 &&
dsty == 0 && width == dst->pitch && height == dst->height)
intel_region_release_pbo(intel, dst);
else
intel_region_cow(intel, dst);
}
intelEmitFillBlit(intel,
dst->cpp,
dst->pitch, dst->buffer, dst_offset, dst->tiling,
dstx, dsty, width, height, color);
}
/* Copy rectangular sub-regions. Need better logic about when to
* push buffers into AGP - will currently do so whenever possible.
*/
void
intel_region_copy(struct intel_context *intel,
struct intel_region *dst,
GLuint dst_offset,
GLuint dstx, GLuint dsty,
struct intel_region *src,
GLuint src_offset,
GLuint srcx, GLuint srcy, GLuint width, GLuint height)
{
DBG("%s\n", __FUNCTION__);
if (intel == NULL)
return;
if (dst->pbo) {
if (dstx == 0 &&
dsty == 0 && width == dst->pitch && height == dst->height)
intel_region_release_pbo(intel, dst);
else
intel_region_cow(intel, dst);
}
assert(src->cpp == dst->cpp);
intelEmitCopyBlit(intel,
dst->cpp,
src->pitch, src->buffer, src_offset, src->tiling,
dst->pitch, dst->buffer, dst_offset, dst->tiling,
srcx, srcy, dstx, dsty, width, height,
GL_COPY);
}
/* Break the COW tie to the pbo. Both the pbo and the region end up
* with a copy of the data.
*/
void
intel_region_cow(struct intel_context *intel, struct intel_region *region)
{
struct intel_buffer_object *pbo = region->pbo;
GLboolean ok;
intel_region_release_pbo(intel, region);
assert(region->cpp * region->pitch * region->height == pbo->Base.Size);
_DBG("%s %p (%d bytes)\n", __FUNCTION__, region, pbo->Base.Size);
/* Now blit from the texture buffer to the new buffer:
*/
LOCK_HARDWARE(intel);
ok = intelEmitCopyBlit(intel,
region->cpp,
region->pitch, pbo->buffer, 0, region->tiling,
region->pitch, region->buffer, 0, region->tiling,
0, 0, 0, 0,
region->pitch, region->height,
GL_COPY);
assert(ok);
UNLOCK_HARDWARE(intel);
}
/* Upload data to a rectangular sub-region. Lots of choices how to do this:
*
* - memcpy by span to current destination
* - upload data as new buffer and blit
*
* Currently always memcpy.
*/
void
intel_region_data(struct intel_context *intel,
struct intel_region *dst,
GLuint dst_offset,
GLuint dstx, GLuint dsty,
const void *src, GLuint src_pitch,
GLuint srcx, GLuint srcy, GLuint width, GLuint height)
{
_DBG("%s\n", __FUNCTION__);
if (intel == NULL)
return;
if (dst->pbo) {
if (dstx == 0 &&
dsty == 0 && width == dst->pitch && height == dst->height)
intel_region_release_pbo(intel, dst);
else
intel_region_cow(intel, dst);
}
LOCK_HARDWARE(intel);
_mesa_copy_rect(intel_region_map(intel, dst) + dst_offset,
dst->cpp,
dst->pitch,
dstx, dsty, width, height, src, src_pitch, srcx, srcy);
intel_region_unmap(intel, dst);
UNLOCK_HARDWARE(intel);
}
dri_bo *
intel_region_buffer(struct intel_context *intel,
struct intel_region *region, GLuint flag)
{
if (region->pbo) {
if (flag == INTEL_WRITE_PART)
intel_region_cow(intel, region);
else if (flag == INTEL_WRITE_FULL)
intel_region_release_pbo(intel, region);
}
return region->buffer;
}
