180 lines
5.6 KiB
C
180 lines
5.6 KiB
C
#include "swrast/swrast.h"
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#include "main/renderbuffer.h"
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#include "main/texobj.h"
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#include "main/teximage.h"
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#include "main/mipmap.h"
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#include "drivers/common/meta.h"
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#include "util/u_memory.h"
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#include "intel_context.h"
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#include "intel_mipmap_tree.h"
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#include "intel_tex.h"
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#include "intel_fbo.h"
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#define FILE_DEBUG_FLAG DEBUG_TEXTURE
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static struct gl_texture_image *
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intelNewTextureImage(struct gl_context * ctx)
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{
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DBG("%s\n", __func__);
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(void) ctx;
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return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
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}
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static void
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intelDeleteTextureImage(struct gl_context * ctx, struct gl_texture_image *img)
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{
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/* nothing special (yet) for intel_texture_image */
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_mesa_delete_texture_image(ctx, img);
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}
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static struct gl_texture_object *
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intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
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{
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struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
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(void) ctx;
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DBG("%s\n", __func__);
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if (obj == NULL)
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return NULL;
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_mesa_initialize_texture_object(ctx, &obj->base, name, target);
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obj->needs_validate = true;
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return &obj->base;
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}
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static void
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intelDeleteTextureObject(struct gl_context *ctx,
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struct gl_texture_object *texObj)
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{
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struct intel_texture_object *intelObj = intel_texture_object(texObj);
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intel_miptree_release(&intelObj->mt);
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_mesa_delete_texture_object(ctx, texObj);
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}
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static GLboolean
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intel_alloc_texture_image_buffer(struct gl_context *ctx,
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struct gl_texture_image *image)
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{
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struct intel_context *intel = intel_context(ctx);
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struct intel_texture_image *intel_image = intel_texture_image(image);
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struct gl_texture_object *texobj = image->TexObject;
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struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
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assert(image->Border == 0);
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/* Because the driver uses AllocTextureImageBuffer() internally, it may end
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* up mismatched with FreeTextureImageBuffer(), but that is safe to call
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* multiple times.
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*/
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ctx->Driver.FreeTextureImageBuffer(ctx, image);
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if (!_swrast_init_texture_image(image))
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return false;
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if (intel_texobj->mt &&
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intel_miptree_match_image(intel_texobj->mt, image)) {
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intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
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DBG("%s: alloc obj %p level %d %dx%dx%d using object's miptree %p\n",
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__func__, texobj, image->Level,
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image->Width, image->Height, image->Depth, intel_texobj->mt);
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} else {
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intel_image->mt = intel_miptree_create_for_teximage(intel, intel_texobj,
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intel_image,
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false);
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/* Even if the object currently has a mipmap tree associated
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* with it, this one is a more likely candidate to represent the
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* whole object since our level didn't fit what was there
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* before, and any lower levels would fit into our miptree.
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*/
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intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
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DBG("%s: alloc obj %p level %d %dx%dx%d using new miptree %p\n",
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__func__, texobj, image->Level,
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image->Width, image->Height, image->Depth, intel_image->mt);
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}
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intel_texobj->needs_validate = true;
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return true;
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}
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static void
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intel_free_texture_image_buffer(struct gl_context * ctx,
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struct gl_texture_image *texImage)
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{
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struct intel_texture_image *intelImage = intel_texture_image(texImage);
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DBG("%s\n", __func__);
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intel_miptree_release(&intelImage->mt);
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_swrast_free_texture_image_buffer(ctx, texImage);
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}
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/**
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* Map texture memory/buffer into user space.
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* Note: the region of interest parameters are ignored here.
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* \param mode bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
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* \param mapOut returns start of mapping of region of interest
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* \param rowStrideOut returns row stride in bytes
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*/
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static void
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intel_map_texture_image(struct gl_context *ctx,
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struct gl_texture_image *tex_image,
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GLuint slice,
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GLuint x, GLuint y, GLuint w, GLuint h,
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GLbitfield mode,
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GLubyte **map,
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GLint *stride)
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{
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struct intel_context *intel = intel_context(ctx);
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struct intel_texture_image *intel_image = intel_texture_image(tex_image);
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struct intel_mipmap_tree *mt = intel_image->mt;
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/* Our texture data is always stored in a miptree. */
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assert(mt);
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/* intel_miptree_map operates on a unified "slice" number that references the
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* cube face, since it's all just slices to the miptree code.
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*/
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if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
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slice = tex_image->Face;
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intel_miptree_map(intel, mt, tex_image->Level, slice, x, y, w, h, mode,
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(void **)map, stride);
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}
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static void
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intel_unmap_texture_image(struct gl_context *ctx,
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struct gl_texture_image *tex_image, GLuint slice)
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{
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struct intel_context *intel = intel_context(ctx);
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struct intel_texture_image *intel_image = intel_texture_image(tex_image);
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struct intel_mipmap_tree *mt = intel_image->mt;
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if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
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slice = tex_image->Face;
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intel_miptree_unmap(intel, mt, tex_image->Level, slice);
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}
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void
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intelInitTextureFuncs(struct dd_function_table *functions)
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{
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functions->NewTextureObject = intelNewTextureObject;
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functions->NewTextureImage = intelNewTextureImage;
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functions->DeleteTextureImage = intelDeleteTextureImage;
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functions->DeleteTexture = intelDeleteTextureObject;
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functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
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functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
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functions->MapTextureImage = intel_map_texture_image;
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functions->UnmapTextureImage = intel_unmap_texture_image;
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}
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