gecko-dev/dom/canvas/WebGLProgram.h

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7.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; 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/. */
#ifndef WEBGL_PROGRAM_H_
#define WEBGL_PROGRAM_H_
#include <map>
#include <set>
#include <string>
#include <vector>
#include "mozilla/LinkedList.h"
#include "mozilla/RefPtr.h"
#include "mozilla/WeakPtr.h"
#include "nsString.h"
#include "nsWrapperCache.h"
#include "WebGLObjectModel.h"
namespace mozilla {
class ErrorResult;
class WebGLActiveInfo;
class WebGLProgram;
class WebGLShader;
class WebGLUniformLocation;
namespace dom {
template<typename> struct Nullable;
class OwningUnsignedLongOrUint32ArrayOrBoolean;
template<typename> class Sequence;
} // namespace dom
namespace webgl {
struct UniformBlockInfo final
: public RefCounted<UniformBlockInfo>
{
MOZ_DECLARE_REFCOUNTED_TYPENAME(UniformBlockInfo);
const nsCString mBaseUserName;
const nsCString mBaseMappedName;
UniformBlockInfo(const nsACString& baseUserName,
const nsACString& baseMappedName)
: mBaseUserName(baseUserName)
, mBaseMappedName(baseMappedName)
{}
};
struct LinkedProgramInfo final
: public RefCounted<LinkedProgramInfo>
, public SupportsWeakPtr<LinkedProgramInfo>
{
MOZ_DECLARE_REFCOUNTED_TYPENAME(LinkedProgramInfo)
MOZ_DECLARE_WEAKREFERENCE_TYPENAME(LinkedProgramInfo)
WebGLProgram* const prog;
std::vector<RefPtr<WebGLActiveInfo>> activeAttribs;
std::vector<RefPtr<WebGLActiveInfo>> activeUniforms;
std::vector<RefPtr<WebGLActiveInfo>> transformFeedbackVaryings;
// Needed for Get{Attrib,Uniform}Location. The keys for these are non-mapped
// user-facing `GLActiveInfo::name`s, without any final "[0]".
std::map<nsCString, const WebGLActiveInfo*> attribMap;
std::map<nsCString, const WebGLActiveInfo*> uniformMap;
std::map<nsCString, const WebGLActiveInfo*> transformFeedbackVaryingsMap;
std::vector<RefPtr<UniformBlockInfo>> uniformBlocks;
// Needed for draw call validation.
std::set<GLuint> activeAttribLocs;
explicit LinkedProgramInfo(WebGLProgram* prog);
bool FindAttrib(const nsCString& baseUserName,
const WebGLActiveInfo** const out_activeInfo) const
{
auto itr = attribMap.find(baseUserName);
if (itr == attribMap.end())
return false;
*out_activeInfo = itr->second;
return true;
}
bool FindUniform(const nsCString& baseUserName,
const WebGLActiveInfo** const out_activeInfo) const
{
auto itr = uniformMap.find(baseUserName);
if (itr == uniformMap.end())
return false;
*out_activeInfo = itr->second;
return true;
}
bool FindUniformBlock(const nsCString& baseUserName,
RefPtr<const UniformBlockInfo>* const out_info) const
{
const size_t count = uniformBlocks.size();
for (size_t i = 0; i < count; i++) {
if (baseUserName == uniformBlocks[i]->mBaseUserName) {
*out_info = uniformBlocks[i].get();
return true;
}
}
return false;
}
bool HasActiveAttrib(GLuint loc) const {
auto itr = activeAttribLocs.find(loc);
return itr != activeAttribLocs.end();
}
};
} // namespace webgl
class WebGLProgram final
: public nsWrapperCache
, public WebGLRefCountedObject<WebGLProgram>
, public LinkedListElement<WebGLProgram>
, public WebGLContextBoundObject
{
public:
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLProgram)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLProgram)
explicit WebGLProgram(WebGLContext* webgl);
void Delete();
// GL funcs
void AttachShader(WebGLShader* shader);
void BindAttribLocation(GLuint index, const nsAString& name);
void DetachShader(WebGLShader* shader);
already_AddRefed<WebGLActiveInfo> GetActiveAttrib(GLuint index) const;
already_AddRefed<WebGLActiveInfo> GetActiveUniform(GLuint index) const;
void GetAttachedShaders(nsTArray<RefPtr<WebGLShader>>* const out) const;
GLint GetAttribLocation(const nsAString& name) const;
GLint GetFragDataLocation(const nsAString& name) const;
void GetProgramInfoLog(nsAString* const out) const;
JS::Value GetProgramParameter(GLenum pname) const;
GLuint GetUniformBlockIndex(const nsAString& name) const;
void GetActiveUniformBlockName(GLuint uniformBlockIndex, nsAString& name) const;
void GetActiveUniformBlockParam(GLuint uniformBlockIndex, GLenum pname,
dom::Nullable<dom::OwningUnsignedLongOrUint32ArrayOrBoolean>& retval) const;
void GetActiveUniformBlockActiveUniforms(JSContext* cx, GLuint uniformBlockIndex,
dom::Nullable<dom::OwningUnsignedLongOrUint32ArrayOrBoolean>& retval,
ErrorResult& rv) const;
already_AddRefed<WebGLUniformLocation> GetUniformLocation(const nsAString& name) const;
void GetUniformIndices(const dom::Sequence<nsString>& uniformNames,
dom::Nullable< nsTArray<GLuint> >& retval) const;
void UniformBlockBinding(GLuint uniformBlockIndex, GLuint uniformBlockBinding) const;
void LinkProgram();
bool UseProgram() const;
void ValidateProgram() const;
////////////////
bool FindActiveOutputMappedNameByUserName(const nsACString& userName,
nsCString* const out_mappedName) const;
bool FindAttribUserNameByMappedName(const nsACString& mappedName,
nsDependentCString* const out_userName) const;
bool FindVaryingByMappedName(const nsACString& mappedName,
nsCString* const out_userName,
bool* const out_isArray) const;
bool FindUniformByMappedName(const nsACString& mappedName,
nsCString* const out_userName,
bool* const out_isArray) const;
bool FindUniformBlockByMappedName(const nsACString& mappedName,
nsCString* const out_userName,
bool* const out_isArray) const;
void TransformFeedbackVaryings(const dom::Sequence<nsString>& varyings,
GLenum bufferMode);
already_AddRefed<WebGLActiveInfo> GetTransformFeedbackVarying(GLuint index);
bool IsLinked() const { return mMostRecentLinkInfo; }
const webgl::LinkedProgramInfo* LinkInfo() const {
return mMostRecentLinkInfo.get();
}
WebGLContext* GetParentObject() const {
return mContext;
}
virtual JSObject* WrapObject(JSContext* js, JS::Handle<JSObject*> givenProto) override;
private:
~WebGLProgram();
void LinkAndUpdate();
public:
const GLuint mGLName;
private:
WebGLRefPtr<WebGLShader> mVertShader;
WebGLRefPtr<WebGLShader> mFragShader;
std::map<nsCString, GLuint> mBoundAttribLocs;
std::vector<nsCString> mTransformFeedbackVaryings;
GLenum mTransformFeedbackBufferMode;
nsCString mLinkLog;
RefPtr<const webgl::LinkedProgramInfo> mMostRecentLinkInfo;
// Storage for transform feedback varyings before link.
// (Work around for bug seen on nVidia drivers.)
std::vector<std::string> mTempMappedVaryings;
};
} // namespace mozilla
#endif // WEBGL_PROGRAM_H_