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i965: Implement SetTextureStorageForBufferObject

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Reviewed-by: Neil Roberts <neil@linux.intel.com>
This commit is contained in:
Jason Ekstrand
2015-01-07 21:13:49 -08:00
parent 117a1d69de
commit 333226522c
1 changed files with 57 additions and 0 deletions
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src/mesa/drivers/dri/i965/intel_tex.c
+57
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@@ -5,6 +5,7 @@
#include "main/mipmap.h"
#include "drivers/common/meta.h"
#include "brw_context.h"
#include "intel_buffer_objects.h"
#include "intel_mipmap_tree.h"
#include "intel_tex.h"
#include "intel_fbo.h"
@@ -298,6 +299,60 @@ intel_texture_view(struct gl_context *ctx,
return GL_TRUE;
}
static bool
intel_set_texture_storage_for_buffer_object(struct gl_context *ctx,
struct gl_texture_object *tex_obj,
struct gl_buffer_object *buffer_obj,
uint32_t buffer_offset,
uint32_t row_stride,
bool read_only)
{
struct brw_context *brw = brw_context(ctx);
struct intel_texture_object *intel_texobj = intel_texture_object(tex_obj);
struct gl_texture_image *image = tex_obj->Image[0][0];
struct intel_texture_image *intel_image = intel_texture_image(image);
struct intel_buffer_object *intel_buffer_obj = intel_buffer_object(buffer_obj);
if (!read_only) {
/* Renderbuffers have the restriction that the buffer offset and
* surface pitch must be a multiple of the element size. If it's
* not, we have to fail and fall back to software.
*/
int cpp = _mesa_get_format_bytes(image->TexFormat);
if (buffer_offset % cpp || row_stride % cpp) {
perf_debug("Bad PBO alignment; fallback to CPU mapping\n");
return false;
}
}
assert(intel_texobj->mt == NULL);
drm_intel_bo *bo = intel_bufferobj_buffer(brw, intel_buffer_obj,
buffer_offset,
row_stride * image->Height);
intel_texobj->mt =
intel_miptree_create_for_bo(brw, bo,
image->TexFormat,
buffer_offset,
image->Width, image->Height, image->Depth,
row_stride);
if (!intel_texobj->mt)
return false;
if (!_swrast_init_texture_image(image))
return false;
intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
/* The miptree is in a validated state, so no need to check later. */
intel_texobj->needs_validate = false;
intel_texobj->validated_first_level = 0;
intel_texobj->validated_last_level = 0;
intel_texobj->_Format = intel_texobj->mt->format;
return true;
}
void
intelInitTextureFuncs(struct dd_function_table *functions)
{
@@ -311,4 +366,6 @@ intelInitTextureFuncs(struct dd_function_table *functions)
functions->MapTextureImage = intel_map_texture_image;
functions->UnmapTextureImage = intel_unmap_texture_image;
functions->TextureView = intel_texture_view;
functions->SetTextureStorageForBufferObject =
intel_set_texture_storage_for_buffer_object;
}