forked from mirrors/gecko-dev
157 lines
3.8 KiB
C++
157 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGL2Context.h"
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#include "WebGLActiveInfo.h"
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#include "WebGLProgram.h"
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#include "WebGLTransformFeedback.h"
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#include "GLContext.h"
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namespace mozilla {
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// -------------------------------------------------------------------------
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// Transform Feedback
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already_AddRefed<WebGLTransformFeedback>
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WebGL2Context::CreateTransformFeedback()
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{
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if (IsContextLost())
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return nullptr;
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GLuint tf = 0;
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gl->fGenTransformFeedbacks(1, &tf);
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RefPtr<WebGLTransformFeedback> ret = new WebGLTransformFeedback(this, tf);
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return ret.forget();
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}
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void
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WebGL2Context::DeleteTransformFeedback(WebGLTransformFeedback* tf)
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{
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const char funcName[] = "deleteTransformFeedback";
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if (!ValidateDeleteObject(funcName, tf))
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return;
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if (tf->mIsActive) {
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ErrorInvalidOperation("%s: Cannot delete active transform feedbacks.", funcName);
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return;
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}
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if (mBoundTransformFeedback == tf) {
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BindTransformFeedback(LOCAL_GL_TRANSFORM_FEEDBACK, nullptr);
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}
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tf->RequestDelete();
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}
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bool
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WebGL2Context::IsTransformFeedback(const WebGLTransformFeedback* tf)
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{
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if (!ValidateIsObject("isTransformFeedback", tf))
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return false;
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return gl->fIsTransformFeedback(tf->mGLName);
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}
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void
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WebGL2Context::BindTransformFeedback(GLenum target, WebGLTransformFeedback* tf)
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{
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const char funcName[] = "bindTransformFeedback";
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if (IsContextLost())
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return;
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if (target != LOCAL_GL_TRANSFORM_FEEDBACK)
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return ErrorInvalidEnum("%s: `target` must be TRANSFORM_FEEDBACK.", funcName);
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if (tf && !ValidateObject(funcName, *tf))
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return;
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if (mBoundTransformFeedback->mIsActive &&
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!mBoundTransformFeedback->mIsPaused)
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{
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ErrorInvalidOperation("%s: Currently bound transform feedback is active and not"
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" paused.",
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funcName);
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return;
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}
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////
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if (mBoundTransformFeedback) {
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mBoundTransformFeedback->AddBufferBindCounts(-1);
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}
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mBoundTransformFeedback = (tf ? tf : mDefaultTransformFeedback);
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gl->fBindTransformFeedback(target, mBoundTransformFeedback->mGLName);
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if (mBoundTransformFeedback) {
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mBoundTransformFeedback->AddBufferBindCounts(+1);
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}
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}
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void
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WebGL2Context::BeginTransformFeedback(GLenum primMode)
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{
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if (IsContextLost())
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return;
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mBoundTransformFeedback->BeginTransformFeedback(primMode);
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}
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void
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WebGL2Context::EndTransformFeedback()
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{
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if (IsContextLost())
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return;
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mBoundTransformFeedback->EndTransformFeedback();
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}
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void
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WebGL2Context::PauseTransformFeedback()
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{
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if (IsContextLost())
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return;
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mBoundTransformFeedback->PauseTransformFeedback();
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}
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void
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WebGL2Context::ResumeTransformFeedback()
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{
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if (IsContextLost())
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return;
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mBoundTransformFeedback->ResumeTransformFeedback();
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}
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void
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WebGL2Context::TransformFeedbackVaryings(WebGLProgram& program,
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const dom::Sequence<nsString>& varyings,
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GLenum bufferMode)
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{
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if (IsContextLost())
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return;
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if (!ValidateObject("transformFeedbackVaryings: program", program))
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return;
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program.TransformFeedbackVaryings(varyings, bufferMode);
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}
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already_AddRefed<WebGLActiveInfo>
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WebGL2Context::GetTransformFeedbackVarying(const WebGLProgram& program, GLuint index)
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{
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if (IsContextLost())
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return nullptr;
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if (!ValidateObject("getTransformFeedbackVarying: program", program))
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return nullptr;
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return program.GetTransformFeedbackVarying(index);
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}
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} // namespace mozilla
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