// Prints shaders one line at the time. This ensures they don't get truncated by the adb log.
void PrintLineByLine(const char* header, const SkSL::String& text) {
if (header) {
SkDebugf("%s\n", header);
}
SkSL::String pretty = PrettyPrint(text);
SkTArray<SkString> lines;
SkStrSplit(pretty.c_str(), "\n", kStrict_SkStrSplitMode, &lines);
for (int i = 0; i < lines.count(); ++i) {
SkDebugf("%4i\t%s\n", i + 1, lines[i].c_str());
}
}
// Given the path to a file (e.g. src/gpu/effects/GrFooFragmentProcessor.fp) and the expected
// filename prefix and suffix (e.g. "Gr" and ".fp"), returns the "base name" of the
// file (in this case, 'FooFragmentProcessor'). If no match, returns the empty string.
static SkSL::String base_name(const char* fpPath, const char* prefix, const char* suffix) {
SkSL::String result;
const char* end = fpPath + strlen(fpPath);
const char* fileName = end;
// back up until we find a slash
while (fileName != fpPath && '/' != *(fileName - 1) && '\\' != *(fileName - 1)) {
--fileName;
}
if (!strncmp(fileName, prefix, strlen(prefix)) &&
!strncmp(end - strlen(suffix), suffix, strlen(suffix))) {
result.append(fileName + strlen(prefix), end - fileName - strlen(prefix) - strlen(suffix));
}
return result;
}
bool GrCompileVkShaderModule(const GrVkGpu* gpu,
const char* shaderString,
VkShaderStageFlagBits stage,
VkShaderModule* shaderModule,
VkPipelineShaderStageCreateInfo* stageInfo,
const SkSL::Program::Settings& settings,
SkSL::Program::Inputs* outInputs) {
std::unique_ptr<SkSL::Program> program = gpu->shaderCompiler()->convertProgram(
vk_shader_stage_to_skiasl_kind(stage),
SkSL::String(shaderString),
settings);
if (!program) {
SkDebugf("SkSL error:\n%s\n", gpu->shaderCompiler()->errorText().c_str());
SkASSERT(false);
}
*outInputs = program->fInputs;
SkSL::String code;
if (!gpu->shaderCompiler()->toSPIRV(*program, &code)) {
SkDebugf("%s\n", gpu->shaderCompiler()->errorText().c_str());
return false;
}
VkShaderModuleCreateInfo moduleCreateInfo;
memset(&moduleCreateInfo, 0, sizeof(VkShaderModuleCreateInfo));
moduleCreateInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
moduleCreateInfo.pNext = nullptr;
moduleCreateInfo.flags = 0;
moduleCreateInfo.codeSize = code.size();
moduleCreateInfo.pCode = (const uint32_t*)code.c_str();
VkResult err = GR_VK_CALL(gpu->vkInterface(), CreateShaderModule(gpu->device(),
&moduleCreateInfo,
nullptr,
shaderModule));
if (err) {
return false;
}
memset(stageInfo, 0, sizeof(VkPipelineShaderStageCreateInfo));
stageInfo->sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
stageInfo->pNext = nullptr;
stageInfo->flags = 0;
stageInfo->stage = skiasl_kind_to_vk_shader_stage(program->fKind);
stageInfo->module = *shaderModule;
stageInfo->pName = "main";
stageInfo->pSpecializationInfo = nullptr;
return true;
}
bool GrGLProgramBuilder::compileAndAttachShaders(GrGLSLShaderBuilder& shader,
GrGLuint programId,
GrGLenum type,
SkTDArray<GrGLuint>* shaderIds,
const SkSL::Program::Settings& settings,
SkSL::Program::Inputs* outInputs) {
SkSL::String glsl;
std::unique_ptr<SkSL::Program> program = GrSkSLtoGLSL(gpu()->glContext(), type,
shader.fCompilerStrings.begin(),
shader.fCompilerStringLengths.begin(),
shader.fCompilerStrings.count(),
settings,
&glsl);
*outInputs = program->fInputs;
return this->compileAndAttachShaders(glsl.c_str(),
glsl.size(),
programId,
type,
shaderIds,
settings,
*outInputs);
}
GrGLProgram* GrGLProgramBuilder::finalize() {
TRACE_EVENT0("skia", TRACE_FUNC);
// verify we can get a program id
GrGLuint programID;
GL_CALL_RET(programID, CreateProgram());
if (0 == programID) {
this->cleanupFragmentProcessors();
return nullptr;
}
if (this->gpu()->glCaps().programBinarySupport() &&
this->gpu()->getContext()->contextPriv().getPersistentCache()) {
GL_CALL(ProgramParameteri(programID, GR_GL_PROGRAM_BINARY_RETRIEVABLE_HINT, GR_GL_TRUE));
}
this->finalizeShaders();
// compile shaders and bind attributes / uniforms
const GrPrimitiveProcessor& primProc = this->primitiveProcessor();
SkSL::Program::Settings settings;
settings.fCaps = this->gpu()->glCaps().shaderCaps();
settings.fFlipY = this->pipeline().proxy()->origin() != kTopLeft_GrSurfaceOrigin;
settings.fSharpenTextures = this->gpu()->getContext()->contextPriv().sharpenMipmappedTextures();
SkSL::Program::Inputs inputs;
SkTDArray<GrGLuint> shadersToDelete;
bool cached = fGpu->glCaps().programBinarySupport() && nullptr != fCached.get();
if (cached) {
this->bindProgramResourceLocations(programID);
// cache hit, just hand the binary to GL
const uint8_t* bytes = fCached->bytes();
size_t offset = 0;
memcpy(&inputs, bytes + offset, sizeof(inputs));
offset += sizeof(inputs);
int binaryFormat;
memcpy(&binaryFormat, bytes + offset, sizeof(binaryFormat));
offset += sizeof(binaryFormat);
GrGLClearErr(this->gpu()->glInterface());
GR_GL_CALL_NOERRCHECK(this->gpu()->glInterface(),
ProgramBinary(programID, binaryFormat, (void*) (bytes + offset),
fCached->size() - offset));
if (GR_GL_GET_ERROR(this->gpu()->glInterface()) == GR_GL_NO_ERROR) {
if (inputs.fRTHeight) {
this->addRTHeightUniform(SKSL_RTHEIGHT_NAME);
}
cached = this->checkLinkStatus(programID);
} else {
cached = false;
}
}
if (!cached) {
// cache miss, compile shaders
if (fFS.fForceHighPrecision) {
settings.fForceHighPrecision = true;
}
SkSL::String glsl;
std::unique_ptr<SkSL::Program> fs = GrSkSLtoGLSL(gpu()->glContext(),
GR_GL_FRAGMENT_SHADER,
fFS.fCompilerStrings.begin(),
fFS.fCompilerStringLengths.begin(),
fFS.fCompilerStrings.count(),
settings,
&glsl);
inputs = fs->fInputs;
if (inputs.fRTHeight) {
this->addRTHeightUniform(SKSL_RTHEIGHT_NAME);
}
if (!this->compileAndAttachShaders(glsl.c_str(), glsl.size(), programID,
GR_GL_FRAGMENT_SHADER, &shadersToDelete, settings,
inputs)) {
this->cleanupProgram(programID, shadersToDelete);
return nullptr;
}
std::unique_ptr<SkSL::Program> vs = GrSkSLtoGLSL(gpu()->glContext(),
GR_GL_VERTEX_SHADER,
fVS.fCompilerStrings.begin(),
fVS.fCompilerStringLengths.begin(),
fVS.fCompilerStrings.count(),
settings,
&glsl);
if (!this->compileAndAttachShaders(glsl.c_str(), glsl.size(), programID,
GR_GL_VERTEX_SHADER, &shadersToDelete, settings,
inputs)) {
this->cleanupProgram(programID, shadersToDelete);
return nullptr;
}
// NVPR actually requires a vertex shader to compile
bool useNvpr = primProc.isPathRendering();
if (!useNvpr) {
int vaCount = primProc.numAttribs();
for (int i = 0; i < vaCount; i++) {
GL_CALL(BindAttribLocation(programID, i, primProc.getAttrib(i).fName));
}
}
if (primProc.willUseGeoShader()) {
std::unique_ptr<SkSL::Program> gs;
gs = GrSkSLtoGLSL(gpu()->glContext(),
GR_GL_GEOMETRY_SHADER,
fGS.fCompilerStrings.begin(),
fGS.fCompilerStringLengths.begin(),
fGS.fCompilerStrings.count(),
settings,
&glsl);
if (!this->compileAndAttachShaders(glsl.c_str(), glsl.size(), programID,
GR_GL_GEOMETRY_SHADER, &shadersToDelete, settings,
inputs)) {
this->cleanupProgram(programID, shadersToDelete);
return nullptr;
}
}
this->bindProgramResourceLocations(programID);
GL_CALL(LinkProgram(programID));
}
// Calling GetProgramiv is expensive in Chromium. Assume success in release builds.
bool checkLinked = kChromium_GrGLDriver != fGpu->ctxInfo().driver();
#ifdef SK_DEBUG
checkLinked = true;
#endif
if (checkLinked) {
if (!this->checkLinkStatus(programID)) {
SkDebugf("VS:\n");
GrGLPrintShader(fGpu->glContext(), GR_GL_VERTEX_SHADER, fVS.fCompilerStrings.begin(),
fVS.fCompilerStringLengths.begin(), fVS.fCompilerStrings.count(),
settings);
if (primProc.willUseGeoShader()) {
SkDebugf("\nGS:\n");
GrGLPrintShader(fGpu->glContext(), GR_GL_GEOMETRY_SHADER,
fGS.fCompilerStrings.begin(), fGS.fCompilerStringLengths.begin(),
fGS.fCompilerStrings.count(), settings);
}
SkDebugf("\nFS:\n");
GrGLPrintShader(fGpu->glContext(), GR_GL_FRAGMENT_SHADER, fFS.fCompilerStrings.begin(),
fFS.fCompilerStringLengths.begin(), fFS.fCompilerStrings.count(),
settings);
SkDEBUGFAIL("");
return nullptr;
}
}
this->resolveProgramResourceLocations(programID);
this->cleanupShaders(shadersToDelete);
if (!cached && this->gpu()->getContext()->contextPriv().getPersistentCache() &&
fGpu->glCaps().programBinarySupport()) {
GrGLsizei length = 0;
GL_CALL(GetProgramiv(programID, GL_PROGRAM_BINARY_LENGTH, &length));
if (length > 0) {
// store shader in cache
sk_sp<SkData> key = SkData::MakeWithoutCopy(desc()->asKey(), desc()->keyLength());
GrGLenum binaryFormat;
std::unique_ptr<char[]> binary(new char[length]);
GL_CALL(GetProgramBinary(programID, length, &length, &binaryFormat, binary.get()));
size_t dataLength = sizeof(inputs) + sizeof(binaryFormat) + length;
std::unique_ptr<uint8_t[]> data(new uint8_t[dataLength]);
size_t offset = 0;
memcpy(data.get() + offset, &inputs, sizeof(inputs));
offset += sizeof(inputs);
memcpy(data.get() + offset, &binaryFormat, sizeof(binaryFormat));
offset += sizeof(binaryFormat);
memcpy(data.get() + offset, binary.get(), length);
this->gpu()->getContext()->contextPriv().getPersistentCache()->store(
*key, *SkData::MakeWithoutCopy(data.get(), dataLength));
}
}
return this->createProgram(programID);
}
SkSL::String prettify(const SkSL::String& string) {
fTabs = 0;
fFreshline = true;
// If a string breaks while in the middle 'parse until' we need to continue parsing on the
// next string
fInParseUntilNewline = false;
fInParseUntil = false;
int parensDepth = 0;
// setup pretty state
fIndex = 0;
fLength = string.length();
fInput = string.c_str();
while (fLength > fIndex) {
/* the heart and soul of our prettification algorithm. The rules should hopefully
* be self explanatory. For '#' and '//' tokens we parse until we reach a newline.
*
* For long style comments like this one, we search for the ending token. We also
* preserve whitespace in these comments WITH THE CAVEAT that we do the newlines
* ourselves. This allows us to remain in control of line numbers, and matching
* tabs Existing tabs in the input string are copied over too, but this will look
* funny
*
* '{' and '}' are handled in basically the same way. We add a newline if we aren't
* on a fresh line, dirty the line, then add a second newline, ie braces are always
* on their own lines indented properly. The one funkiness here is structs print
* with the semicolon on its own line. Its not a problem for a glsl compiler though
*
* '(' and ')' are basically ignored, except as a sign we need to ignore ';' ala
* in for loops.
*
* ';' means add a new line
*
* '\t' and '\n' are ignored in general parsing for backwards compatability with
* existing shader code and we also have a special case for handling whitespace
* at the beginning of fresh lines.
*
* Otherwise just add the new character to the pretty string, indenting if
* necessary.
*/
if (fInParseUntilNewline) {
this->parseUntilNewline();
} else if (fInParseUntil) {
this->parseUntil(fInParseUntilToken);
} else if (this->hasToken("#") || this->hasToken("//")) {
this->parseUntilNewline();
} else if (this->hasToken("/*")) {
this->parseUntil("*/");
} else if ('{' == fInput[fIndex]) {
this->newline();
this->appendChar('{');
fTabs++;
this->newline();
} else if ('}' == fInput[fIndex]) {
fTabs--;
this->newline();
this->appendChar('}');
this->newline();
} else if (this->hasToken(")")) {
parensDepth--;
} else if (this->hasToken("(")) {
parensDepth++;
} else if (!parensDepth && this->hasToken(";")) {
this->newline();
} else if ('\t' == fInput[fIndex] || '\n' == fInput[fIndex] ||
(fFreshline && ' ' == fInput[fIndex])) {
fIndex++;
} else {
this->appendChar(fInput[fIndex]);
}
}
return fPretty;
}