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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/. */
#include "WebGL2Context.h"
#include "WebGLActiveInfo.h"
#include "WebGLProgram.h"
#include "WebGLTransformFeedback.h"
#include "GLContext.h"
namespace mozilla {
// -------------------------------------------------------------------------
// Transform Feedback
already_AddRefed<WebGLTransformFeedback>
WebGL2Context::CreateTransformFeedback()
{
if (IsContextLost())
return nullptr;
MakeContextCurrent();
GLuint tf = 0;
gl->fGenTransformFeedbacks(1, &tf);
RefPtr<WebGLTransformFeedback> ret = new WebGLTransformFeedback(this, tf);
return ret.forget();
}
void
WebGL2Context::DeleteTransformFeedback(WebGLTransformFeedback* tf)
{
const char funcName[] = "deleteTransformFeedback";
if (!ValidateDeleteObject(funcName, tf))
return;
if (tf->mIsActive) {
ErrorInvalidOperation("%s: Cannot delete active transform feedbacks.", funcName);
return;
}
if (mBoundTransformFeedback == tf) {
BindTransformFeedback(LOCAL_GL_TRANSFORM_FEEDBACK, nullptr);
}
tf->RequestDelete();
}
bool
WebGL2Context::IsTransformFeedback(const WebGLTransformFeedback* tf)
{
if (!ValidateIsObject("isTransformFeedback", tf))
return false;
MakeContextCurrent();
return gl->fIsTransformFeedback(tf->mGLName);
}
void
WebGL2Context::BindTransformFeedback(GLenum target, WebGLTransformFeedback* tf)
{
const char funcName[] = "bindTransformFeedback";
if (IsContextLost())
return;
if (target != LOCAL_GL_TRANSFORM_FEEDBACK)
return ErrorInvalidEnum("%s: `target` must be TRANSFORM_FEEDBACK.", funcName);
if (tf && !ValidateObject(funcName, *tf))
return;
if (mBoundTransformFeedback->mIsActive &&
!mBoundTransformFeedback->mIsPaused)
{
ErrorInvalidOperation("%s: Currently bound transform feedback is active and not"
" paused.",
funcName);
return;
}
////
if (mBoundTransformFeedback) {
mBoundTransformFeedback->AddBufferBindCounts(-1);
}
mBoundTransformFeedback = (tf ? tf : mDefaultTransformFeedback);
MakeContextCurrent();
gl->fBindTransformFeedback(target, mBoundTransformFeedback->mGLName);
if (mBoundTransformFeedback) {
mBoundTransformFeedback->AddBufferBindCounts(+1);
}
}
void
WebGL2Context::BeginTransformFeedback(GLenum primMode)
{
if (IsContextLost())
return;
mBoundTransformFeedback->BeginTransformFeedback(primMode);
}
void
WebGL2Context::EndTransformFeedback()
{
if (IsContextLost())
return;
mBoundTransformFeedback->EndTransformFeedback();
}
void
WebGL2Context::PauseTransformFeedback()
{
if (IsContextLost())
return;
mBoundTransformFeedback->PauseTransformFeedback();
}
void
WebGL2Context::ResumeTransformFeedback()
{
if (IsContextLost())
return;
mBoundTransformFeedback->ResumeTransformFeedback();
}
void
WebGL2Context::TransformFeedbackVaryings(WebGLProgram& program,
const dom::Sequence<nsString>& varyings,
GLenum bufferMode)
{
if (IsContextLost())
return;
if (!ValidateObject("transformFeedbackVaryings: program", program))
return;
program.TransformFeedbackVaryings(varyings, bufferMode);
}
already_AddRefed<WebGLActiveInfo>
WebGL2Context::GetTransformFeedbackVarying(const WebGLProgram& program, GLuint index)
{
if (IsContextLost())
return nullptr;
if (!ValidateObject("getTransformFeedbackVarying: program", program))
return nullptr;
return program.GetTransformFeedbackVarying(index);
}
} // namespace mozilla
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