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| 1 // Copyright 2011 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 "cc/program_binding.h" | |
| 6 | |
| 7 #include "base/debug/trace_event.h" | |
| 8 #include "cc/geometry_binding.h" | |
| 9 #include "cc/gl_renderer.h" // For the GLC() macro. | |
| 10 #include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3
D.h" | |
| 11 #include "third_party/khronos/GLES2/gl2.h" | |
| 12 | |
| 13 using WebKit::WebGraphicsContext3D; | |
| 14 | |
| 15 namespace cc { | |
| 16 | |
| 17 ProgramBindingBase::ProgramBindingBase() | |
| 18 : program_(0), | |
| 19 vertex_shader_id_(0), | |
| 20 fragment_shader_id_(0), | |
| 21 initialized_(false) {} | |
| 22 | |
| 23 ProgramBindingBase::~ProgramBindingBase() { | |
| 24 // If you hit these asserts, you initialized but forgot to call Cleanup(). | |
| 25 DCHECK(!program_); | |
| 26 DCHECK(!vertex_shader_id_); | |
| 27 DCHECK(!fragment_shader_id_); | |
| 28 DCHECK(!initialized_); | |
| 29 } | |
| 30 | |
| 31 void ProgramBindingBase::Init(WebGraphicsContext3D* context, | |
| 32 const std::string& vertex_shader, | |
| 33 const std::string& fragment_shader) { | |
| 34 TRACE_EVENT0("cc", "ProgramBindingBase::init"); | |
| 35 vertex_shader_id_ = LoadShader(context, GL_VERTEX_SHADER, vertex_shader); | |
| 36 if (!vertex_shader_id_) { | |
| 37 if (!IsContextLost(context)) | |
| 38 LOG(ERROR) << "Failed to create vertex shader"; | |
| 39 return; | |
| 40 } | |
| 41 | |
| 42 fragment_shader_id_ = | |
| 43 LoadShader(context, GL_FRAGMENT_SHADER, fragment_shader); | |
| 44 if (!fragment_shader_id_) { | |
| 45 GLC(context, context->deleteShader(vertex_shader_id_)); | |
| 46 vertex_shader_id_ = 0; | |
| 47 if (!IsContextLost(context)) | |
| 48 LOG(ERROR) << "Failed to create fragment shader"; | |
| 49 return; | |
| 50 } | |
| 51 | |
| 52 program_ = | |
| 53 CreateShaderProgram(context, vertex_shader_id_, fragment_shader_id_); | |
| 54 DCHECK(program_ || IsContextLost(context)); | |
| 55 } | |
| 56 | |
| 57 void ProgramBindingBase::Link(WebGraphicsContext3D* context) { | |
| 58 GLC(context, context->linkProgram(program_)); | |
| 59 CleanupShaders(context); | |
| 60 if (!program_) | |
| 61 return; | |
| 62 #ifndef NDEBUG | |
| 63 int linked = 0; | |
| 64 GLC(context, context->getProgramiv(program_, GL_LINK_STATUS, &linked)); | |
| 65 if (!linked) { | |
| 66 if (!IsContextLost(context)) | |
| 67 LOG(ERROR) << "Failed to link shader program"; | |
| 68 GLC(context, context->deleteProgram(program_)); | |
| 69 } | |
| 70 #endif | |
| 71 } | |
| 72 | |
| 73 void ProgramBindingBase::Cleanup(WebGraphicsContext3D* context) { | |
| 74 initialized_ = false; | |
| 75 if (!program_) | |
| 76 return; | |
| 77 | |
| 78 DCHECK(context); | |
| 79 GLC(context, context->deleteProgram(program_)); | |
| 80 program_ = 0; | |
| 81 | |
| 82 CleanupShaders(context); | |
| 83 } | |
| 84 | |
| 85 unsigned ProgramBindingBase::LoadShader(WebGraphicsContext3D* context, | |
| 86 unsigned type, | |
| 87 const std::string& shader_source) { | |
| 88 unsigned shader = context->createShader(type); | |
| 89 if (!shader) | |
| 90 return 0; | |
| 91 GLC(context, context->shaderSource(shader, shader_source.data())); | |
| 92 GLC(context, context->compileShader(shader)); | |
| 93 #ifndef NDEBUG | |
| 94 int compiled = 0; | |
| 95 GLC(context, context->getShaderiv(shader, GL_COMPILE_STATUS, &compiled)); | |
| 96 if (!compiled) { | |
| 97 GLC(context, context->deleteShader(shader)); | |
| 98 return 0; | |
| 99 } | |
| 100 #endif | |
| 101 return shader; | |
| 102 } | |
| 103 | |
| 104 unsigned ProgramBindingBase::CreateShaderProgram(WebGraphicsContext3D* context, | |
| 105 unsigned vertex_shader, | |
| 106 unsigned fragment_shader) { | |
| 107 unsigned program_object = context->createProgram(); | |
| 108 if (!program_object) { | |
| 109 if (!IsContextLost(context)) | |
| 110 LOG(ERROR) << "Failed to create shader program"; | |
| 111 return 0; | |
| 112 } | |
| 113 | |
| 114 GLC(context, context->attachShader(program_object, vertex_shader)); | |
| 115 GLC(context, context->attachShader(program_object, fragment_shader)); | |
| 116 | |
| 117 // Bind the common attrib locations. | |
| 118 GLC(context, | |
| 119 context->bindAttribLocation(program_object, | |
| 120 GeometryBinding::PositionAttribLocation(), | |
| 121 "a_position")); | |
| 122 GLC(context, | |
| 123 context->bindAttribLocation(program_object, | |
| 124 GeometryBinding::TexCoordAttribLocation(), | |
| 125 "a_texCoord")); | |
| 126 | |
| 127 return program_object; | |
| 128 } | |
| 129 | |
| 130 void ProgramBindingBase::CleanupShaders(WebGraphicsContext3D* context) { | |
| 131 if (vertex_shader_id_) { | |
| 132 GLC(context, context->deleteShader(vertex_shader_id_)); | |
| 133 vertex_shader_id_ = 0; | |
| 134 } | |
| 135 if (fragment_shader_id_) { | |
| 136 GLC(context, context->deleteShader(fragment_shader_id_)); | |
| 137 fragment_shader_id_ = 0; | |
| 138 } | |
| 139 } | |
| 140 | |
| 141 bool ProgramBindingBase::IsContextLost(WebGraphicsContext3D* context) { | |
| 142 return (context->getGraphicsResetStatusARB() != GL_NO_ERROR); | |
| 143 } | |
| 144 | |
| 145 } // namespace cc | |
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Chromium Code Reviews
Issue 12912006:
Part 4 of cc/ directory shuffles: output (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src