| Aldo Culquicondor | 9152d53 | 2018-09-25 14:55:14 | [diff] [blame^] | 1 | // Copyright 2018 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "chrome/browser/vr/cmd_buffer_surface_provider.h" |
| 6 | |
| 7 | #include "base/logging.h" |
| 8 | #include "gpu/command_buffer/client/gles2_implementation.h" |
| 9 | #include "gpu/command_buffer/client/gles2_lib.h" |
| 10 | #include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h" |
| 11 | #include "third_party/skia/include/core/SkCanvas.h" |
| 12 | #include "third_party/skia/include/core/SkSurface.h" |
| 13 | #include "third_party/skia/include/gpu/GrBackendSurface.h" |
| 14 | #include "third_party/skia/include/gpu/GrContext.h" |
| 15 | #include "third_party/skia/include/gpu/gl/GrGLInterface.h" |
| 16 | #include "ui/gfx/geometry/size.h" |
| 17 | |
| 18 | namespace vr { |
| 19 | |
| 20 | CmdBufferSurfaceProvider::CmdBufferSurfaceProvider() { |
| 21 | auto* gles2_implementation = |
| 22 | static_cast<gpu::gles2::GLES2Implementation*>(gles2::GetGLContext()); |
| 23 | DCHECK(gles2_implementation); |
| 24 | sk_sp<const GrGLInterface> gr_interface = |
| 25 | skia_bindings::CreateGLES2InterfaceBindings(gles2_implementation, |
| 26 | gles2_implementation); |
| 27 | gr_context_ = GrContext::MakeGL(std::move(gr_interface)); |
| 28 | DCHECK(gr_context_); |
| 29 | glGetIntegerv(GL_FRAMEBUFFER_BINDING, &main_fbo_); |
| 30 | } |
| 31 | |
| 32 | CmdBufferSurfaceProvider::~CmdBufferSurfaceProvider() = default; |
| 33 | |
| 34 | sk_sp<SkSurface> CmdBufferSurfaceProvider::MakeSurface(const gfx::Size& size) { |
| 35 | return SkSurface::MakeRenderTarget( |
| 36 | gr_context_.get(), SkBudgeted::kNo, |
| 37 | SkImageInfo::MakeN32Premul(size.width(), size.height()), 0, |
| 38 | kTopLeft_GrSurfaceOrigin, nullptr); |
| 39 | } |
| 40 | |
| 41 | GLuint CmdBufferSurfaceProvider::FlushSurface(SkSurface* surface, |
| 42 | GLuint reuse_texture_id) { |
| 43 | surface->getCanvas()->flush(); |
| 44 | GrBackendTexture backend_texture = |
| 45 | surface->getBackendTexture(SkSurface::kFlushRead_BackendHandleAccess); |
| 46 | DCHECK(backend_texture.isValid()); |
| 47 | GrGLTextureInfo info; |
| 48 | bool result = backend_texture.getGLTextureInfo(&info); |
| 49 | DCHECK(result); |
| 50 | GLuint texture_id = info.fID; |
| 51 | DCHECK_NE(texture_id, 0u); |
| 52 | surface->getCanvas()->getGrContext()->resetContext(); |
| 53 | glBindFramebuffer(GL_FRAMEBUFFER, main_fbo_); |
| 54 | |
| 55 | return texture_id; |
| 56 | } |
| 57 | |
| 58 | } // namespace vr |
