gecko-dev/dom/canvas/WebGLProgram.h

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/* -*- 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 WEBGLPROGRAM_H_
#define WEBGLPROGRAM_H_
#include "WebGLObjectModel.h"
#include <map>
#include "mozilla/CheckedInt.h"
#include "mozilla/LinkedList.h"
#include "nsWrapperCache.h"
#include "WebGLShader.h"
#include "WebGLUniformInfo.h"
namespace mozilla {
class WebGLShader;
struct WebGLUniformInfo;
typedef nsDataHashtable<nsCStringHashKey, nsCString> CStringMap;
typedef nsDataHashtable<nsCStringHashKey, WebGLUniformInfo> CStringToUniformInfoMap;
class WebGLProgram MOZ_FINAL
: public nsWrapperCache
, public WebGLRefCountedObject<WebGLProgram>
, public LinkedListElement<WebGLProgram>
, public WebGLContextBoundObject
{
public:
explicit WebGLProgram(WebGLContext* aContext);
void Delete();
void DetachShaders() {
mAttachedShaders.Clear();
}
GLuint GLName() { return mGLName; }
const nsTArray<WebGLRefPtr<WebGLShader> >& AttachedShaders() const { return mAttachedShaders; }
bool LinkStatus() { return mLinkStatus; }
uint32_t Generation() const { return mGeneration.value(); }
void SetLinkStatus(bool val) { mLinkStatus = val; }
bool ContainsShader(WebGLShader *shader) {
return mAttachedShaders.Contains(shader);
}
// return true if the shader wasn't already attached
bool AttachShader(WebGLShader *shader);
// return true if the shader was found and removed
bool DetachShader(WebGLShader *shader);
bool HasAttachedShaderOfType(GLenum shaderType);
bool HasBothShaderTypesAttached() {
return
HasAttachedShaderOfType(LOCAL_GL_VERTEX_SHADER) &&
HasAttachedShaderOfType(LOCAL_GL_FRAGMENT_SHADER);
}
bool HasBadShaderAttached();
size_t UpperBoundNumSamplerUniforms();
bool NextGeneration()
{
if (!(mGeneration + 1).isValid())
return false; // must exit without changing mGeneration
++mGeneration;
return true;
}
/* Called only after LinkProgram */
bool UpdateInfo();
/* Getters for cached program info */
bool IsAttribInUse(unsigned i) const { return mAttribsInUse[i]; }
/* Maps identifier |name| to the mapped identifier |*mappedName|
* Both are ASCII strings.
*/
void MapIdentifier(const nsACString& name, nsCString *mappedName);
/* Un-maps mapped identifier |name| to the original identifier |*reverseMappedName|
* Both are ASCII strings.
*/
void ReverseMapIdentifier(const nsACString& name, nsCString *reverseMappedName);
/* Returns the uniform array size (or 1 if the uniform is not an array) of
* the uniform with given mapped identifier.
*
* Note: the input string |name| is the mapped identifier, not the original identifier.
*/
WebGLUniformInfo GetUniformInfoForMappedIdentifier(const nsACString& name);
WebGLContext *GetParentObject() const {
return Context();
}
virtual JSObject* WrapObject(JSContext *cx) MOZ_OVERRIDE;
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLProgram)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLProgram)
// public post-link data
std::map<GLint, nsCString> mActiveAttribMap;
static uint64_t IdentifierHashFunction(const char *ident, size_t size);
static void HashMapIdentifier(const nsACString& name, nsCString *hashedName);
protected:
~WebGLProgram() {
DeleteOnce();
}
GLuint mGLName;
bool mLinkStatus;
// attached shaders of the program object
nsTArray<WebGLRefPtr<WebGLShader> > mAttachedShaders;
CheckedUint32 mGeneration;
// post-link data
FallibleTArray<bool> mAttribsInUse;
nsAutoPtr<CStringMap> mIdentifierMap, mIdentifierReverseMap;
nsAutoPtr<CStringToUniformInfoMap> mUniformInfoMap;
int mAttribMaxNameLength;
};
} // namespace mozilla
#endif