| // Copyright 2010 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. |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_GL_STRING_QUERY_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_GL_STRING_QUERY_H_ |
| |
| #include "gpu/command_buffer/client/gles2_interface.h" |
| #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h" |
| |
| namespace blink { |
| |
| // Performs a query for a string on GLES2Interface and returns a WTF::String. If |
| // it is unable to query the string, it wil return an empty WTF::String. |
| class GLStringQuery { |
| public: |
| struct ProgramInfoLog { |
| static void LengthFunction(gpu::gles2::GLES2Interface* gl, |
| GLuint id, |
| GLint* length) { |
| return gl->GetProgramiv(id, GL_INFO_LOG_LENGTH, length); |
| } |
| static void LogFunction(gpu::gles2::GLES2Interface* gl, |
| GLuint id, |
| GLint length, |
| GLint* returned_length, |
| LChar* ptr) { |
| return gl->GetProgramInfoLog(id, length, returned_length, |
| reinterpret_cast<GLchar*>(ptr)); |
| } |
| }; |
| |
| struct ShaderInfoLog { |
| static void LengthFunction(gpu::gles2::GLES2Interface* gl, |
| GLuint id, |
| GLint* length) { |
| gl->GetShaderiv(id, GL_INFO_LOG_LENGTH, length); |
| } |
| static void LogFunction(gpu::gles2::GLES2Interface* gl, |
| GLuint id, |
| GLint length, |
| GLint* returned_length, |
| LChar* ptr) { |
| gl->GetShaderInfoLog(id, length, returned_length, |
| reinterpret_cast<GLchar*>(ptr)); |
| } |
| }; |
| |
| struct TranslatedShaderSourceANGLE { |
| static void LengthFunction(gpu::gles2::GLES2Interface* gl, |
| GLuint id, |
| GLint* length) { |
| gl->GetShaderiv(id, GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE, length); |
| } |
| static void LogFunction(gpu::gles2::GLES2Interface* gl, |
| GLuint id, |
| GLint length, |
| GLint* returned_length, |
| LChar* ptr) { |
| gl->GetTranslatedShaderSourceANGLE(id, length, returned_length, |
| reinterpret_cast<GLchar*>(ptr)); |
| } |
| }; |
| |
| GLStringQuery(gpu::gles2::GLES2Interface* gl) : gl_(gl) {} |
| |
| template <class Traits> |
| WTF::String Run(GLuint id) { |
| GLint length = 0; |
| Traits::LengthFunction(gl_, id, &length); |
| if (!length) |
| return WTF::g_empty_string; |
| LChar* log_ptr; |
| scoped_refptr<WTF::StringImpl> name_impl = |
| WTF::StringImpl::CreateUninitialized(length, log_ptr); |
| GLsizei returned_length = 0; |
| Traits::LogFunction(gl_, id, length, &returned_length, log_ptr); |
| // The returnedLength excludes the null terminator. If this check wasn't |
| // true, then we'd need to tell the returned String the real length. |
| DCHECK_EQ(returned_length + 1, length); |
| return String(std::move(name_impl)); |
| } |
| |
| private: |
| gpu::gles2::GLES2Interface* gl_; |
| }; |
| |
| } // namespace blink |
| #endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGL_GL_STRING_QUERY_H_ |