/**
* ctx->Driver.AllocTextureStorage() handler.
*
* Compare this to _mesa_AllocTextureStorage_sw, which would call into
* intel_alloc_texture_image_buffer() above.
*/
static GLboolean
intel_alloc_texture_storage(struct gl_context *ctx,
struct gl_texture_object *texobj,
GLsizei levels, GLsizei width,
GLsizei height, GLsizei depth)
{
struct brw_context *brw = brw_context(ctx);
struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
struct gl_texture_image *first_image = texobj->Image[0][0];
int num_samples = intel_quantize_num_samples(brw->screen,
first_image->NumSamples);
const int numFaces = _mesa_num_tex_faces(texobj->Target);
int face;
int level;
/* If the object's current miptree doesn't match what we need, make a new
* one.
*/
if (!intel_texobj->mt ||
!intel_miptree_match_image(intel_texobj->mt, first_image) ||
intel_texobj->mt->last_level != levels - 1) {
intel_miptree_release(&intel_texobj->mt);
intel_get_image_dims(first_image, &width, &height, &depth);
intel_texobj->mt = intel_miptree_create(brw, texobj->Target,
first_image->TexFormat,
0, levels - 1,
width, height, depth,
MAX2(num_samples, 1),
MIPTREE_CREATE_DEFAULT);
if (intel_texobj->mt == NULL) {
return false;
}
}
for (face = 0; face < numFaces; face++) {
for (level = 0; level < levels; level++) {
struct gl_texture_image *image = texobj->Image[face][level];
struct intel_texture_image *intel_image = intel_texture_image(image);
image->NumSamples = num_samples;
_swrast_free_texture_image_buffer(ctx, image);
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 = levels - 1;
intel_texobj->_Format = first_image->TexFormat;
return true;
}
/* Work back from the specified level of the image to the baselevel and create a
* miptree of that size.
*/
struct intel_mipmap_tree *
intel_miptree_create_for_teximage(struct brw_context *brw,
struct intel_texture_object *intelObj,
struct intel_texture_image *intelImage,
uint32_t layout_flags)
{
GLuint lastLevel;
int width, height, depth;
GLuint i;
intel_get_image_dims(&intelImage->base.Base, &width, &height, &depth);
DBG("%s\n", __func__);
/* Figure out image dimensions at start level. */
for (i = intelImage->base.Base.Level; i > 0; i--) {
width <<= 1;
if (height != 1)
height <<= 1;
if (depth != 1)
depth <<= 1;
}
/* Guess a reasonable value for lastLevel. This is probably going
* to be wrong fairly often and might mean that we have to look at
* resizable buffers, or require that buffers implement lazy
* pagetable arrangements.
*/
if ((intelObj->base.Sampler.MinFilter == GL_NEAREST ||
intelObj->base.Sampler.MinFilter == GL_LINEAR) &&
intelImage->base.Base.Level == 0 &&
!intelObj->base.GenerateMipmap) {
lastLevel = 0;
} else {
lastLevel = _mesa_get_tex_max_num_levels(intelObj->base.Target,
width, height, depth) - 1;
}
return intel_miptree_create(brw,
intelObj->base.Target,
intelImage->base.Base.TexFormat,
0,
lastLevel,
width,
height,
depth,
intelImage->base.Base.NumSamples,
layout_flags | MIPTREE_LAYOUT_TILING_ANY);
}
/* Work back from the specified level of the image to the baselevel and create a
* miptree of that size.
*/
struct intel_mipmap_tree *
intel_miptree_create_for_teximage(struct brw_context *brw,
struct intel_texture_object *intelObj,
struct intel_texture_image *intelImage,
uint32_t layout_flags)
{
GLuint lastLevel;
int width, height, depth;
intel_get_image_dims(&intelImage->base.Base, &width, &height, &depth);
DBG("%s\n", __func__);
/* Figure out image dimensions at start level. */
switch(intelObj->base.Target) {
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_EXTERNAL_OES:
assert(intelImage->base.Base.Level == 0);
break;
case GL_TEXTURE_3D:
depth <<= intelImage->base.Base.Level;
/* Fall through */
case GL_TEXTURE_2D:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_ARRAY:
height <<= intelImage->base.Base.Level;
/* Fall through */
case GL_TEXTURE_1D:
case GL_TEXTURE_1D_ARRAY:
width <<= intelImage->base.Base.Level;
break;
default:
unreachable("Unexpected target");
}
/* Guess a reasonable value for lastLevel. This is probably going
* to be wrong fairly often and might mean that we have to look at
* resizable buffers, or require that buffers implement lazy
* pagetable arrangements.
*/
if ((intelObj->base.Sampler.MinFilter == GL_NEAREST ||
intelObj->base.Sampler.MinFilter == GL_LINEAR) &&
intelImage->base.Base.Level == 0 &&
!intelObj->base.GenerateMipmap) {
lastLevel = 0;
} else {
lastLevel = _mesa_get_tex_max_num_levels(intelObj->base.Target,
width, height, depth) - 1;
}
return intel_miptree_create(brw,
intelObj->base.Target,
intelImage->base.Base.TexFormat,
0,
lastLevel,
width,
height,
depth,
intelImage->base.Base.NumSamples,
layout_flags | MIPTREE_LAYOUT_TILING_ANY);
}