+++ /dev/null
-/*
- * Mesa 3-D graphics library
- *
- * Copyright (C) 2014 Intel Corporation. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include "glheader.h"
-#include "context.h"
-#include "enums.h"
-#include "imports.h"
-#include "macros.h"
-#include "teximage.h"
-#include "texobj.h"
-#include "fbobject.h"
-#include "framebuffer.h"
-#include "buffers.h"
-#include "state.h"
-#include "mtypes.h"
-#include "meta.h"
-
-/**
- * Create a texture image that wraps a renderbuffer.
- */
-static struct gl_texture_image *
-wrap_renderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb)
-{
- GLenum texTarget;
- struct gl_texture_object *texObj;
- struct gl_texture_image *texImage;
-
- if (rb->NumSamples > 1)
- texTarget = GL_TEXTURE_2D_MULTISAMPLE;
- else
- texTarget = GL_TEXTURE_2D;
-
- /* Texture ID is not significant since it never goes into the hash table */
- texObj = ctx->Driver.NewTextureObject(ctx, 0, texTarget);
- assert(texObj);
- if (!texObj)
- return NULL;
-
- texImage = _mesa_get_tex_image(ctx, texObj, texTarget, 0);
- assert(texImage);
- if (!texImage)
- return NULL;
-
- if (!ctx->Driver.BindRenderbufferTexImage(ctx, rb, texImage)) {
- _mesa_problem(ctx, "Failed to create texture from renderbuffer");
- return NULL;
- }
-
- if (ctx->Driver.FinishRenderTexture && !rb->NeedsFinishRenderTexture) {
- rb->NeedsFinishRenderTexture = true;
- ctx->Driver.FinishRenderTexture(ctx, rb);
- }
-
- return texImage;
-}
-
-
-/* This function makes a texture view without bothering with all of the API
- * checks. Most of them are the same for CopyTexSubImage so checking would
- * be redundant. The one major difference is that we don't check for
- * whether the texture is immutable or not. However, since the view will
- * be created and then immediately destroyed, this should not be a problem.
- */
-static bool
-make_view(struct gl_context *ctx, struct gl_texture_image *tex_image,
- struct gl_texture_image **view_tex_image, GLuint *view_tex_name,
- GLenum internal_format)
-{
- struct gl_texture_object *tex_obj = tex_image->TexObject;
- struct gl_texture_object *view_tex_obj;
- mesa_format tex_format;
-
- /* Set up the new texture object */
- _mesa_GenTextures(1, view_tex_name);
- view_tex_obj = _mesa_lookup_texture(ctx, *view_tex_name);
- if (!view_tex_obj)
- return false;
-
- tex_format = _mesa_choose_texture_format(ctx, view_tex_obj, tex_obj->Target,
- 0, internal_format,
- GL_NONE, GL_NONE);
-
- if (!ctx->Driver.TestProxyTexImage(ctx, tex_obj->Target, 1, 0, tex_format,
- 1, tex_image->Width, tex_image->Height,
- tex_image->Depth)) {
- _mesa_DeleteTextures(1, view_tex_name);
- *view_tex_name = 0;
- return false;
- }
-
- assert(tex_obj->Target != 0);
- assert(tex_obj->TargetIndex < NUM_TEXTURE_TARGETS);
-
- view_tex_obj->Target = tex_obj->Target;
- view_tex_obj->TargetIndex = tex_obj->TargetIndex;
-
- *view_tex_image = _mesa_get_tex_image(ctx, view_tex_obj, tex_obj->Target, 0);
-
- if (!*view_tex_image) {
- _mesa_DeleteTextures(1, view_tex_name);
- *view_tex_name = 0;
- return false;
- }
-
- _mesa_init_teximage_fields(ctx, *view_tex_image,
- tex_image->Width, tex_image->Height,
- tex_image->Depth,
- 0, internal_format, tex_format);
-
- view_tex_obj->MinLevel = tex_image->Level;
- view_tex_obj->NumLevels = 1;
- view_tex_obj->MinLayer = tex_obj->MinLayer;
- view_tex_obj->NumLayers = tex_obj->NumLayers;
- view_tex_obj->Immutable = tex_obj->Immutable;
- view_tex_obj->ImmutableLevels = tex_obj->ImmutableLevels;
-
- if (ctx->Driver.TextureView != NULL &&
- !ctx->Driver.TextureView(ctx, view_tex_obj, tex_obj)) {
- _mesa_DeleteTextures(1, view_tex_name);
- *view_tex_name = 0;
- return false; /* driver recorded error */
- }
-
- return true;
-}
-
-/** A partial implementation of glCopyImageSubData
- *
- * This is a partial implementation of glCopyImageSubData that works only
- * if both textures are uncompressed and the destination texture is
- * renderable. It uses a slight abuse of a texture view (see make_view) to
- * turn the source texture into the destination texture type and then uses
- * _mesa_meta_BlitFramebuffers to do the copy.
- */
-bool
-_mesa_meta_CopyImageSubData_uncompressed(struct gl_context *ctx,
- struct gl_texture_image *src_tex_image,
- struct gl_renderbuffer *src_renderbuffer,
- int src_x, int src_y, int src_z,
- struct gl_texture_image *dst_tex_image,
- struct gl_renderbuffer *dst_renderbuffer,
- int dst_x, int dst_y, int dst_z,
- int src_width, int src_height)
-{
- mesa_format src_format, dst_format;
- GLint src_internal_format, dst_internal_format;
- GLuint src_view_texture = 0;
- struct gl_texture_image *src_view_tex_image;
- struct gl_framebuffer *readFb;
- struct gl_framebuffer *drawFb = NULL;
- bool success = false;
- GLbitfield mask;
- GLenum status, attachment;
-
- if (src_renderbuffer) {
- src_format = src_renderbuffer->Format;
- src_internal_format = src_renderbuffer->InternalFormat;
- } else {
- assert(src_tex_image);
- src_format = src_tex_image->TexFormat;
- src_internal_format = src_tex_image->InternalFormat;
- }
-
- if (dst_renderbuffer) {
- dst_format = dst_renderbuffer->Format;
- dst_internal_format = dst_renderbuffer->InternalFormat;
- } else {
- assert(dst_tex_image);
- dst_format = dst_tex_image->TexFormat;
- dst_internal_format = dst_tex_image->InternalFormat;
- }
-
- if (_mesa_is_format_compressed(src_format))
- return false;
-
- if (_mesa_is_format_compressed(dst_format))
- return false;
-
- if (src_internal_format == dst_internal_format) {
- src_view_tex_image = src_tex_image;
- } else {
- if (src_renderbuffer) {
- assert(src_tex_image == NULL);
- src_tex_image = wrap_renderbuffer(ctx, src_renderbuffer);
- }
- if (!make_view(ctx, src_tex_image, &src_view_tex_image, &src_view_texture,
- dst_internal_format))
- goto cleanup;
- }
-
- /* We really only need to stash the bound framebuffers and scissor. */
- _mesa_meta_begin(ctx, MESA_META_SCISSOR);
-
- readFb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF);
- if (readFb == NULL)
- goto meta_end;
-
- drawFb = ctx->Driver.NewFramebuffer(ctx, 0xDEADBEEF);
- if (drawFb == NULL)
- goto meta_end;
-
- _mesa_bind_framebuffers(ctx, drawFb, readFb);
-
- switch (_mesa_get_format_base_format(src_format)) {
- case GL_DEPTH_COMPONENT:
- attachment = GL_DEPTH_ATTACHMENT;
- mask = GL_DEPTH_BUFFER_BIT;
- break;
- case GL_DEPTH_STENCIL:
- attachment = GL_DEPTH_STENCIL_ATTACHMENT;
- mask = GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT;
- break;
- case GL_STENCIL_INDEX:
- attachment = GL_STENCIL_ATTACHMENT;
- mask = GL_STENCIL_BUFFER_BIT;
- break;
- default:
- attachment = GL_COLOR_ATTACHMENT0;
- mask = GL_COLOR_BUFFER_BIT;
- _mesa_DrawBuffer(GL_COLOR_ATTACHMENT0);
- _mesa_ReadBuffer(GL_COLOR_ATTACHMENT0);
- }
-
- if (src_view_tex_image) {
- /* Prefer the tex image because, even if we have a renderbuffer, we may
- * have had to wrap it in a texture view.
- */
- _mesa_meta_framebuffer_texture_image(ctx, ctx->ReadBuffer, attachment,
- src_view_tex_image, src_z);
- } else {
- _mesa_framebuffer_renderbuffer(ctx, ctx->ReadBuffer, attachment,
- src_renderbuffer);
- }
-
- status = _mesa_check_framebuffer_status(ctx, ctx->ReadBuffer);
- if (status != GL_FRAMEBUFFER_COMPLETE)
- goto meta_end;
-
- if (dst_renderbuffer) {
- _mesa_framebuffer_renderbuffer(ctx, ctx->DrawBuffer, attachment,
- dst_renderbuffer);
- } else {
- _mesa_meta_framebuffer_texture_image(ctx, ctx->DrawBuffer, attachment,
- dst_tex_image, dst_z);
- }
-
- status = _mesa_check_framebuffer_status(ctx, ctx->DrawBuffer);
- if (status != GL_FRAMEBUFFER_COMPLETE)
- goto meta_end;
-
- /* Explicitly disable sRGB encoding */
- ctx->DrawBuffer->Visual.sRGBCapable = false;
-
- /* Since we've bound a new draw framebuffer, we need to update its
- * derived state -- _Xmin, etc -- for BlitFramebuffer's clipping to
- * be correct.
- */
- _mesa_update_state(ctx);
-
- /* We skip the core BlitFramebuffer checks for format consistency.
- * We have already created views to ensure that the texture formats
- * match.
- */
- ctx->Driver.BlitFramebuffer(ctx, ctx->ReadBuffer, ctx->DrawBuffer,
- src_x, src_y,
- src_x + src_width, src_y + src_height,
- dst_x, dst_y,
- dst_x + src_width, dst_y + src_height,
- mask, GL_NEAREST);
-
- success = true;
-
-meta_end:
- _mesa_reference_framebuffer(&readFb, NULL);
- _mesa_reference_framebuffer(&drawFb, NULL);
- _mesa_meta_end(ctx);
-
-cleanup:
- _mesa_DeleteTextures(1, &src_view_texture);
-
- /* If we got a renderbuffer source, delete the temporary texture */
- if (src_renderbuffer && src_tex_image)
- ctx->Driver.DeleteTexture(ctx, src_tex_image->TexObject);
-
- return success;
-}
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