| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/browser/vr/cmd_buffer_surface_provider.h" |
| |
| #include "base/logging.h" |
| #include "gpu/command_buffer/client/gles2_implementation.h" |
| #include "gpu/command_buffer/client/gles2_lib.h" |
| #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h" |
| #include "third_party/skia/include/core/SkCanvas.h" |
| #include "third_party/skia/include/core/SkSurface.h" |
| #include "third_party/skia/include/gpu/GrBackendSurface.h" |
| #include "third_party/skia/include/gpu/GrContext.h" |
| #include "third_party/skia/include/gpu/gl/GrGLInterface.h" |
| #include "ui/gfx/geometry/size.h" |
| |
| namespace vr { |
| |
| CmdBufferSurfaceProvider::CmdBufferSurfaceProvider() { |
| auto* gles2_implementation = |
| static_cast<gpu::gles2::GLES2Implementation*>(gles2::GetGLContext()); |
| DCHECK(gles2_implementation); |
| sk_sp<const GrGLInterface> gr_interface = |
| skia_bindings::CreateGLES2InterfaceBindings(gles2_implementation, |
| gles2_implementation); |
| gr_context_ = GrContext::MakeGL(std::move(gr_interface)); |
| DCHECK(gr_context_); |
| glGetIntegerv(GL_FRAMEBUFFER_BINDING, &main_fbo_); |
| } |
| |
| CmdBufferSurfaceProvider::~CmdBufferSurfaceProvider() = default; |
| |
| sk_sp<SkSurface> CmdBufferSurfaceProvider::MakeSurface(const gfx::Size& size) { |
| return SkSurface::MakeRenderTarget( |
| gr_context_.get(), SkBudgeted::kNo, |
| SkImageInfo::MakeN32Premul(size.width(), size.height()), 0, |
| kTopLeft_GrSurfaceOrigin, nullptr); |
| } |
| |
| GLuint CmdBufferSurfaceProvider::FlushSurface(SkSurface* surface, |
| GLuint reuse_texture_id) { |
| surface->getCanvas()->flush(); |
| GrBackendTexture backend_texture = |
| surface->getBackendTexture(SkSurface::kFlushRead_BackendHandleAccess); |
| DCHECK(backend_texture.isValid()); |
| GrGLTextureInfo info; |
| bool result = backend_texture.getGLTextureInfo(&info); |
| DCHECK(result); |
| GLuint texture_id = info.fID; |
| DCHECK_NE(texture_id, 0u); |
| surface->getCanvas()->getGrContext()->resetContext(); |
| glBindFramebuffer(GL_FRAMEBUFFER, main_fbo_); |
| |
| return texture_id; |
| } |
| |
| } // namespace vr |