mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 22:55:23 +00:00
476 lines
14 KiB
C++
476 lines
14 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "WebGLShader.h"
|
|
|
|
#include "angle/ShaderLang.h"
|
|
#include "GLContext.h"
|
|
#include "mozilla/dom/WebGLRenderingContextBinding.h"
|
|
#include "mozilla/MemoryReporting.h"
|
|
#include "nsPrintfCString.h"
|
|
#include "nsString.h"
|
|
#include "prenv.h"
|
|
#include "WebGLContext.h"
|
|
#include "WebGLObjectModel.h"
|
|
#include "WebGLShaderValidator.h"
|
|
#include "WebGLValidateStrings.h"
|
|
|
|
namespace mozilla {
|
|
|
|
// On success, writes to out_validator and out_translatedSource.
|
|
// On failure, writes to out_translationLog.
|
|
static bool
|
|
Translate(const nsACString& source, webgl::ShaderValidator* validator,
|
|
nsACString* const out_translationLog, nsACString* const out_translatedSource)
|
|
{
|
|
if (!validator->ValidateAndTranslate(source.BeginReading())) {
|
|
validator->GetInfoLog(out_translationLog);
|
|
return false;
|
|
}
|
|
|
|
// Success
|
|
validator->GetOutput(out_translatedSource);
|
|
return true;
|
|
}
|
|
|
|
template<size_t N>
|
|
static bool
|
|
SubstringStartsWith(const std::string& testStr, size_t offset, const char (& refStr)[N])
|
|
{
|
|
for (size_t i = 0; i < N-1; i++) {
|
|
if (testStr[offset + i] != refStr[i])
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* On success, writes to out_translatedSource.
|
|
* On failure, writes to out_translationLog.
|
|
*
|
|
* Requirements:
|
|
* #version is either omitted, `#version 100`, or `version 300 es`.
|
|
*/
|
|
static bool
|
|
TranslateWithoutValidation(const nsACString& sourceNS, bool isWebGL2,
|
|
nsACString* const out_translationLog,
|
|
nsACString* const out_translatedSource)
|
|
{
|
|
std::string source = sourceNS.BeginReading();
|
|
|
|
size_t versionStrStart = source.find("#version");
|
|
size_t versionStrLen;
|
|
uint32_t glesslVersion;
|
|
|
|
if (versionStrStart != std::string::npos) {
|
|
static const char versionStr100[] = "#version 100\n";
|
|
static const char versionStr300es[] = "#version 300 es\n";
|
|
|
|
if (isWebGL2 && SubstringStartsWith(source, versionStrStart, versionStr300es)) {
|
|
glesslVersion = 300;
|
|
versionStrLen = strlen(versionStr300es);
|
|
|
|
} else if (SubstringStartsWith(source, versionStrStart, versionStr100)) {
|
|
glesslVersion = 100;
|
|
versionStrLen = strlen(versionStr100);
|
|
|
|
} else {
|
|
nsPrintfCString error("#version, if declared, must be %s.",
|
|
isWebGL2 ? "`100` or `300 es`"
|
|
: "`100`");
|
|
*out_translationLog = error;
|
|
return false;
|
|
}
|
|
} else {
|
|
versionStrStart = 0;
|
|
versionStrLen = 0;
|
|
glesslVersion = 100;
|
|
}
|
|
|
|
std::string reversionedSource = source;
|
|
reversionedSource.erase(versionStrStart, versionStrLen);
|
|
|
|
switch (glesslVersion) {
|
|
case 100:
|
|
/* According to ARB_ES2_compatibility extension glsl
|
|
* should accept #version 100 for ES 2 shaders. */
|
|
reversionedSource.insert(versionStrStart, "#version 100\n");
|
|
break;
|
|
case 300:
|
|
reversionedSource.insert(versionStrStart, "#version 330\n");
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Bad `glesslVersion`.");
|
|
}
|
|
|
|
out_translatedSource->Assign(reversionedSource.c_str(),
|
|
reversionedSource.length());
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
GetCompilationStatusAndLog(gl::GLContext* gl, GLuint shader, bool* const out_success,
|
|
nsACString* const out_log)
|
|
{
|
|
GLint compileStatus = LOCAL_GL_FALSE;
|
|
gl->fGetShaderiv(shader, LOCAL_GL_COMPILE_STATUS, &compileStatus);
|
|
|
|
// It's simpler if we always get the log.
|
|
GLint lenWithNull = 0;
|
|
gl->fGetShaderiv(shader, LOCAL_GL_INFO_LOG_LENGTH, &lenWithNull);
|
|
|
|
if (lenWithNull > 1) {
|
|
// SetLength takes the length without the null.
|
|
out_log->SetLength(lenWithNull - 1);
|
|
gl->fGetShaderInfoLog(shader, lenWithNull, nullptr, out_log->BeginWriting());
|
|
} else {
|
|
out_log->SetLength(0);
|
|
}
|
|
|
|
*out_success = (compileStatus == LOCAL_GL_TRUE);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
static GLuint
|
|
CreateShader(gl::GLContext* gl, GLenum type)
|
|
{
|
|
gl->MakeCurrent();
|
|
return gl->fCreateShader(type);
|
|
}
|
|
|
|
WebGLShader::WebGLShader(WebGLContext* webgl, GLenum type)
|
|
: WebGLContextBoundObject(webgl)
|
|
, mGLName(CreateShader(webgl->GL(), type))
|
|
, mType(type)
|
|
, mTranslationSuccessful(false)
|
|
, mCompilationSuccessful(false)
|
|
{
|
|
mContext->mShaders.insertBack(this);
|
|
}
|
|
|
|
WebGLShader::~WebGLShader()
|
|
{
|
|
DeleteOnce();
|
|
}
|
|
|
|
void
|
|
WebGLShader::ShaderSource(const nsAString& source)
|
|
{
|
|
StripComments stripComments(source);
|
|
const nsAString& cleanSource = Substring(stripComments.result().Elements(),
|
|
stripComments.length());
|
|
if (!ValidateGLSLString(cleanSource, mContext, "shaderSource"))
|
|
return;
|
|
|
|
// We checked that the source stripped of comments is in the
|
|
// 7-bit ASCII range, so we can skip the NS_IsAscii() check.
|
|
const NS_LossyConvertUTF16toASCII sourceCString(cleanSource);
|
|
|
|
if (mContext->gl->WorkAroundDriverBugs()) {
|
|
const size_t maxSourceLength = 0x3ffff;
|
|
if (sourceCString.Length() > maxSourceLength) {
|
|
mContext->ErrorInvalidValue("shaderSource: Source has more than %d"
|
|
" characters. (Driver workaround)",
|
|
maxSourceLength);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (PR_GetEnv("MOZ_WEBGL_DUMP_SHADERS")) {
|
|
printf_stderr("////////////////////////////////////////\n");
|
|
printf_stderr("// MOZ_WEBGL_DUMP_SHADERS:\n");
|
|
|
|
// Wow - Roll Your Own Foreach-Lines because printf_stderr has a hard-coded
|
|
// internal size, so long strings are truncated.
|
|
|
|
int32_t start = 0;
|
|
int32_t end = sourceCString.Find("\n", false, start, -1);
|
|
while (end > -1) {
|
|
const nsCString line(sourceCString.BeginReading() + start, end - start);
|
|
printf_stderr("%s\n", line.BeginReading());
|
|
start = end + 1;
|
|
end = sourceCString.Find("\n", false, start, -1);
|
|
}
|
|
|
|
printf_stderr("////////////////////////////////////////\n");
|
|
}
|
|
|
|
mSource = source;
|
|
mCleanSource = sourceCString;
|
|
}
|
|
|
|
void
|
|
WebGLShader::CompileShader()
|
|
{
|
|
mValidator = nullptr;
|
|
mTranslationSuccessful = false;
|
|
mCompilationSuccessful = false;
|
|
|
|
gl::GLContext* gl = mContext->gl;
|
|
|
|
mValidator.reset(mContext->CreateShaderValidator(mType));
|
|
|
|
bool success;
|
|
if (mValidator) {
|
|
success = Translate(mCleanSource, mValidator.get(), &mValidationLog,
|
|
&mTranslatedSource);
|
|
} else {
|
|
success = TranslateWithoutValidation(mCleanSource, mContext->IsWebGL2(),
|
|
&mValidationLog, &mTranslatedSource);
|
|
}
|
|
|
|
if (!success)
|
|
return;
|
|
|
|
mTranslationSuccessful = true;
|
|
|
|
gl->MakeCurrent();
|
|
|
|
const char* const parts[] = {
|
|
mTranslatedSource.BeginReading()
|
|
};
|
|
gl->fShaderSource(mGLName, ArrayLength(parts), parts, nullptr);
|
|
|
|
gl->fCompileShader(mGLName);
|
|
|
|
GetCompilationStatusAndLog(gl, mGLName, &mCompilationSuccessful, &mCompilationLog);
|
|
}
|
|
|
|
void
|
|
WebGLShader::GetShaderInfoLog(nsAString* out) const
|
|
{
|
|
const nsCString& log = !mTranslationSuccessful ? mValidationLog
|
|
: mCompilationLog;
|
|
CopyASCIItoUTF16(log, *out);
|
|
}
|
|
|
|
JS::Value
|
|
WebGLShader::GetShaderParameter(GLenum pname) const
|
|
{
|
|
switch (pname) {
|
|
case LOCAL_GL_SHADER_TYPE:
|
|
return JS::NumberValue(mType);
|
|
|
|
case LOCAL_GL_DELETE_STATUS:
|
|
return JS::BooleanValue(IsDeleteRequested());
|
|
|
|
case LOCAL_GL_COMPILE_STATUS:
|
|
return JS::BooleanValue(mCompilationSuccessful);
|
|
|
|
default:
|
|
mContext->ErrorInvalidEnumInfo("getShaderParameter: `pname`", pname);
|
|
return JS::NullValue();
|
|
}
|
|
}
|
|
|
|
void
|
|
WebGLShader::GetShaderSource(nsAString* out) const
|
|
{
|
|
out->SetIsVoid(false);
|
|
*out = mSource;
|
|
}
|
|
|
|
void
|
|
WebGLShader::GetShaderTranslatedSource(nsAString* out) const
|
|
{
|
|
if (!mCompilationSuccessful) {
|
|
mContext->ErrorInvalidOperation("getShaderTranslatedSource: Shader has"
|
|
" not been successfully compiled.");
|
|
return;
|
|
}
|
|
|
|
out->SetIsVoid(false);
|
|
CopyASCIItoUTF16(mTranslatedSource, *out);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
bool
|
|
WebGLShader::CanLinkTo(const WebGLShader* prev, nsCString* const out_log) const
|
|
{
|
|
if (!mValidator)
|
|
return true;
|
|
|
|
return mValidator->CanLinkTo(prev->mValidator.get(), out_log);
|
|
}
|
|
|
|
size_t
|
|
WebGLShader::CalcNumSamplerUniforms() const
|
|
{
|
|
if (mValidator)
|
|
return mValidator->CalcNumSamplerUniforms();
|
|
|
|
// TODO
|
|
return 0;
|
|
}
|
|
|
|
size_t
|
|
WebGLShader::NumAttributes() const
|
|
{
|
|
if (mValidator)
|
|
return mValidator->NumAttributes();
|
|
|
|
// TODO
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
WebGLShader::BindAttribLocation(GLuint prog, const nsCString& userName,
|
|
GLuint index) const
|
|
{
|
|
std::string userNameStr(userName.BeginReading());
|
|
|
|
const std::string* mappedNameStr = &userNameStr;
|
|
if (mValidator)
|
|
mValidator->FindAttribMappedNameByUserName(userNameStr, &mappedNameStr);
|
|
|
|
mContext->gl->fBindAttribLocation(prog, index, mappedNameStr->c_str());
|
|
}
|
|
|
|
bool
|
|
WebGLShader::FindAttribUserNameByMappedName(const nsACString& mappedName,
|
|
nsDependentCString* const out_userName) const
|
|
{
|
|
if (!mValidator)
|
|
return false;
|
|
|
|
const std::string mappedNameStr(mappedName.BeginReading());
|
|
const std::string* userNameStr;
|
|
if (!mValidator->FindAttribUserNameByMappedName(mappedNameStr, &userNameStr))
|
|
return false;
|
|
|
|
out_userName->Rebind(userNameStr->c_str());
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
WebGLShader::FindVaryingByMappedName(const nsACString& mappedName,
|
|
nsCString* const out_userName,
|
|
bool* const out_isArray) const
|
|
{
|
|
if (!mValidator)
|
|
return false;
|
|
|
|
const std::string mappedNameStr(mappedName.BeginReading());
|
|
std::string userNameStr;
|
|
if (!mValidator->FindVaryingByMappedName(mappedNameStr, &userNameStr, out_isArray))
|
|
return false;
|
|
|
|
*out_userName = userNameStr.c_str();
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
WebGLShader::FindUniformByMappedName(const nsACString& mappedName,
|
|
nsCString* const out_userName,
|
|
bool* const out_isArray) const
|
|
{
|
|
if (!mValidator)
|
|
return false;
|
|
|
|
const std::string mappedNameStr(mappedName.BeginReading(), mappedName.Length());
|
|
std::string userNameStr;
|
|
if (!mValidator->FindUniformByMappedName(mappedNameStr, &userNameStr, out_isArray))
|
|
return false;
|
|
|
|
*out_userName = userNameStr.c_str();
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
WebGLShader::FindUniformBlockByMappedName(const nsACString& mappedName,
|
|
nsCString* const out_userName,
|
|
bool* const out_isArray) const
|
|
{
|
|
if (!mValidator)
|
|
return false;
|
|
|
|
const std::string mappedNameStr(mappedName.BeginReading(), mappedName.Length());
|
|
std::string userNameStr;
|
|
if (!mValidator->FindUniformBlockByMappedName(mappedNameStr, &userNameStr))
|
|
return false;
|
|
|
|
*out_userName = userNameStr.c_str();
|
|
return true;
|
|
}
|
|
|
|
void
|
|
WebGLShader::ApplyTransformFeedbackVaryings(GLuint prog,
|
|
const std::vector<nsCString>& varyings,
|
|
GLenum bufferMode,
|
|
std::vector<std::string>* out_mappedVaryings) const
|
|
{
|
|
MOZ_ASSERT(mType == LOCAL_GL_VERTEX_SHADER);
|
|
MOZ_ASSERT(!varyings.empty());
|
|
MOZ_ASSERT(out_mappedVaryings);
|
|
|
|
const size_t varyingsCount = varyings.size();
|
|
std::vector<std::string> mappedVaryings;
|
|
|
|
for (size_t i = 0; i < varyingsCount; i++) {
|
|
const nsCString& userName = varyings[i];
|
|
std::string userNameStr(userName.BeginReading());
|
|
|
|
const std::string* mappedNameStr = &userNameStr;
|
|
if (mValidator)
|
|
mValidator->FindVaryingMappedNameByUserName(userNameStr, &mappedNameStr);
|
|
|
|
mappedVaryings.push_back(*mappedNameStr);
|
|
}
|
|
|
|
// Temporary, tight packed array of string pointers into mappedVaryings.
|
|
std::vector<const GLchar*> strings;
|
|
strings.resize(varyingsCount);
|
|
for (size_t i = 0; i < varyingsCount; i++) {
|
|
strings[i] = mappedVaryings[i].c_str();
|
|
}
|
|
|
|
mContext->MakeContextCurrent();
|
|
mContext->gl->fTransformFeedbackVaryings(prog, varyingsCount, &strings[0], bufferMode);
|
|
|
|
out_mappedVaryings->swap(mappedVaryings);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Boilerplate
|
|
|
|
JSObject*
|
|
WebGLShader::WrapObject(JSContext* js, JS::Handle<JSObject*> givenProto)
|
|
{
|
|
return dom::WebGLShaderBinding::Wrap(js, this, givenProto);
|
|
}
|
|
|
|
size_t
|
|
WebGLShader::SizeOfIncludingThis(MallocSizeOf mallocSizeOf) const
|
|
{
|
|
size_t validatorSize = mValidator ? mallocSizeOf(mValidator.get())
|
|
: 0;
|
|
return mallocSizeOf(this) +
|
|
mSource.SizeOfExcludingThisIfUnshared(mallocSizeOf) +
|
|
mCleanSource.SizeOfExcludingThisIfUnshared(mallocSizeOf) +
|
|
validatorSize +
|
|
mValidationLog.SizeOfExcludingThisIfUnshared(mallocSizeOf) +
|
|
mTranslatedSource.SizeOfExcludingThisIfUnshared(mallocSizeOf) +
|
|
mCompilationLog.SizeOfExcludingThisIfUnshared(mallocSizeOf);
|
|
}
|
|
|
|
void
|
|
WebGLShader::Delete()
|
|
{
|
|
gl::GLContext* gl = mContext->GL();
|
|
|
|
gl->MakeCurrent();
|
|
gl->fDeleteShader(mGLName);
|
|
|
|
LinkedListElement<WebGLShader>::removeFrom(mContext->mShaders);
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WebGLShader)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLShader, AddRef)
|
|
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLShader, Release)
|
|
|
|
} // namespace mozilla
|