| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrGLShaderStringBuilder.h" |
| #include "gl/GrGLGpu.h" |
| #include "gl/GrGLSLPrettyPrint.h" |
| #include "SkRTConf.h" |
| #include "SkTraceEvent.h" |
| |
| #define GL_CALL(X) GR_GL_CALL(gpu->glInterface(), X) |
| #define GL_CALL_RET(R, X) GR_GL_CALL_RET(gpu->glInterface(), R, X) |
| |
| SK_CONF_DECLARE(bool, c_PrintShaders, "gpu.printShaders", false, |
| "Print the source code for all shaders generated."); |
| |
| GrGLuint GrGLCompileAndAttachShader(const GrGLContext& glCtx, |
| GrGLuint programId, |
| GrGLenum type, |
| const char** strings, |
| int* lengths, |
| int count, |
| GrGpu::Stats* stats) { |
| const GrGLInterface* gli = glCtx.interface(); |
| |
| GrGLuint shaderId; |
| GR_GL_CALL_RET(gli, shaderId, CreateShader(type)); |
| if (0 == shaderId) { |
| return 0; |
| } |
| |
| #ifdef SK_DEBUG |
| SkString prettySource = GrGLSLPrettyPrint::PrettyPrintGLSL(strings, lengths, count, false); |
| const GrGLchar* sourceStr = prettySource.c_str(); |
| GrGLint sourceLength = static_cast<GrGLint>(prettySource.size()); |
| GR_GL_CALL(gli, ShaderSource(shaderId, 1, &sourceStr, &sourceLength)); |
| #else |
| GR_GL_CALL(gli, ShaderSource(shaderId, count, strings, lengths)); |
| #endif |
| |
| // If tracing is enabled in chrome then we pretty print |
| bool traceShader; |
| TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("skia.gpu"), &traceShader); |
| if (traceShader) { |
| SkString shader = GrGLSLPrettyPrint::PrettyPrintGLSL(strings, lengths, count, false); |
| TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("skia.gpu"), "skia_gpu::GLShader", |
| TRACE_EVENT_SCOPE_THREAD, "shader", TRACE_STR_COPY(shader.c_str())); |
| } |
| |
| stats->incShaderCompilations(); |
| GR_GL_CALL(gli, CompileShader(shaderId)); |
| |
| // Calling GetShaderiv in Chromium is quite expensive. Assume success in release builds. |
| bool checkCompiled = kChromium_GrGLDriver != glCtx.driver(); |
| #ifdef SK_DEBUG |
| checkCompiled = true; |
| #endif |
| if (checkCompiled) { |
| GrGLint compiled = GR_GL_INIT_ZERO; |
| GR_GL_CALL(gli, GetShaderiv(shaderId, GR_GL_COMPILE_STATUS, &compiled)); |
| |
| if (!compiled) { |
| GrGLint infoLen = GR_GL_INIT_ZERO; |
| GR_GL_CALL(gli, GetShaderiv(shaderId, GR_GL_INFO_LOG_LENGTH, &infoLen)); |
| SkAutoMalloc log(sizeof(char)*(infoLen+1)); // outside if for debugger |
| if (infoLen > 0) { |
| // retrieve length even though we don't need it to workaround bug in Chromium cmd |
| // buffer param validation. |
| GrGLsizei length = GR_GL_INIT_ZERO; |
| GR_GL_CALL(gli, GetShaderInfoLog(shaderId, infoLen+1, &length, (char*)log.get())); |
| SkDebugf("%s", GrGLSLPrettyPrint::PrettyPrintGLSL(strings, lengths, count, true).c_str()); |
| SkDebugf("\n%s", log.get()); |
| } |
| SkDEBUGFAIL("Shader compilation failed!"); |
| GR_GL_CALL(gli, DeleteShader(shaderId)); |
| return 0; |
| } |
| } |
| |
| if (c_PrintShaders) { |
| SkDebugf("%s", GrGLSLPrettyPrint::PrettyPrintGLSL(strings, lengths, count, true).c_str()); |
| SkDebugf("\n"); |
| } |
| |
| // Attach the shader, but defer deletion until after we have linked the program. |
| // This works around a bug in the Android emulator's GLES2 wrapper which |
| // will immediately delete the shader object and free its memory even though it's |
| // attached to a program, which then causes glLinkProgram to fail. |
| GR_GL_CALL(gli, AttachShader(programId, shaderId)); |
| |
| return shaderId; |
| } |