GrGLShaderStringBuilder.cpp File Reference

#include "src/gpu/ganesh/gl/builders/GrGLShaderStringBuilder.h"
#include "include/gpu/gl/GrGLFunctions.h"
#include "include/gpu/gl/GrGLInterface.h"
#include "include/private/base/SkTo.h"
#include "src/base/SkAutoMalloc.h"
#include "src/core/SkTraceEvent.h"
#include "src/gpu/ganesh/gl/GrGLDefines.h"
#include "src/gpu/ganesh/gl/GrGLGpu.h"
#include "src/gpu/ganesh/gl/GrGLUtil.h"
#include "src/sksl/SkSLString.h"
#include <cstdint>

Go to the source code of this file.

Functions
GrGLuint	GrGLCompileAndAttachShader (const GrGLContext &glCtx, GrGLuint programId, GrGLenum type, const std::string &glsl, bool shaderWasCached, GrThreadSafePipelineBuilder::Stats *stats, GrContextOptions::ShaderErrorHandler *errorHandler)
bool	GrGLCheckLinkStatus (const GrGLGpu *gpu, GrGLuint programID, bool shaderWasCached, GrContextOptions::ShaderErrorHandler *errorHandler, const std::string *sksl[kGrShaderTypeCount], const std::string glsl[kGrShaderTypeCount])

Function Documentation

GrGLCheckLinkStatus()

bool GrGLCheckLinkStatus	(	const GrGLGpu *	gpu,
		GrGLuint	programID,
		bool	shaderWasCached,
		GrContextOptions::ShaderErrorHandler *	errorHandler,
		const std::string *	sksl[kGrShaderTypeCount],
		const std::string	glsl[kGrShaderTypeCount]
	)

Definition at line 74 of file GrGLShaderStringBuilder.cpp.

                                                                   {
    const GrGLInterface* gli = gpu->glInterface();
 
    GrGLint linked = GR_GL_INIT_ZERO;
    GR_GL_CALL(gli, GetProgramiv(programID, GR_GL_LINK_STATUS, &linked));
    if (!linked && errorHandler) {
        std::string allShaders;
        if (sksl) {
            SkSL::String::appendf(&allShaders, "// Vertex SKSL\n%s\n"
                                               "// Fragment SKSL\n%s\n",
                                               sksl[kVertex_GrShaderType]->c_str(),
                                               sksl[kFragment_GrShaderType]->c_str());
        }
        if (glsl) {
            SkSL::String::appendf(&allShaders, "// Vertex GLSL\n%s\n"
                                               "// Fragment GLSL\n%s\n",
                                               glsl[kVertex_GrShaderType].c_str(),
                                               glsl[kFragment_GrShaderType].c_str());
        }
        GrGLint infoLen = GR_GL_INIT_ZERO;
        GR_GL_CALL(gli, GetProgramiv(programID, GR_GL_INFO_LOG_LENGTH, &infoLen));
        SkAutoMalloc log(infoLen+1);
        if (infoLen > 0) {
            // retrieve length even though we don't need it to workaround
            // bug in chrome cmd buffer param validation.
            GrGLsizei length = GR_GL_INIT_ZERO;
            GR_GL_CALL(gli, GetProgramInfoLog(programID, infoLen+1, &length, (char*)log.get()));
        }
        const char* errorMsg = (infoLen > 0) ? (const char*)log.get()
                                             : "link failed but did not provide an info log";
        errorHandler->compileError(allShaders.c_str(), errorMsg, shaderWasCached);
    }
    return SkToBool(linked);
}

GrGLCompileAndAttachShader()

GrGLuint GrGLCompileAndAttachShader	(	const GrGLContext &	glCtx,
		GrGLuint	programId,
		GrGLenum	type,
		const std::string &	glsl,
		bool	shaderWasCached,
		GrThreadSafePipelineBuilder::Stats *	stats,
		GrContextOptions::ShaderErrorHandler *	errorHandler
	)

Definition at line 21 of file GrGLShaderStringBuilder.cpp.

                                                                                      {
    TRACE_EVENT0_ALWAYS("skia.shaders", "driver_compile_shader");
    const GrGLInterface* gli = glCtx.glInterface();
 
    // Specify GLSL source to the driver.
    GrGLuint shaderId;
    GR_GL_CALL_RET(gli, shaderId, CreateShader(type));
    if (0 == shaderId) {
        return 0;
    }
    const GrGLchar* source = glsl.c_str();
    GrGLint sourceLength = SkToInt(glsl.size());
    GR_GL_CALL(gli, ShaderSource(shaderId, 1, &source, &sourceLength));
 
    stats->incShaderCompilations();
    GR_GL_CALL(gli, CompileShader(shaderId));
 
    {
        ATRACE_ANDROID_FRAMEWORK("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()));
            }
            errorHandler->compileError(
                    glsl.c_str(), infoLen > 0 ? (const char*)log.get() : "", shaderWasCached);
            GR_GL_CALL(gli, DeleteShader(shaderId));
            return 0;
        }
    }
 
    // 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;
}