mirror of https://github.com/axmolengine/axmol.git
move rendering callback to RenderTexture
This commit is contained in:
Huabing.Xu
parent
b7c0d7a9e8
commit
fad585fbef
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@ -625,4 +625,124 @@ Image* RenderTexture::newImage(bool fliimage)
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return image;
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return image;
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}
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}
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void RenderTexture::onBegin()
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{
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//
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kmGLGetMatrix(KM_GL_PROJECTION, &_oldProjMatrix);
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kmGLMatrixMode(KM_GL_PROJECTION);
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kmGLLoadMatrix(&_projectionMatrix);
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kmGLGetMatrix(KM_GL_MODELVIEW, &_oldTransMatrix);
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kmGLMatrixMode(KM_GL_MODELVIEW);
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kmGLLoadMatrix(&_transformMatrix);
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Director *director = Director::getInstance();
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director->setProjection(director->getProjection());
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const Size& texSize = _texture->getContentSizeInPixels();
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// Calculate the adjustment ratios based on the old and new projections
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Size size = director->getWinSizeInPixels();
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float widthRatio = size.width / texSize.width;
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float heightRatio = size.height / texSize.height;
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// Adjust the orthographic projection and viewport
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glViewport(0, 0, (GLsizei)texSize.width, (GLsizei)texSize.height);
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kmMat4 orthoMatrix;
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kmMat4OrthographicProjection(&orthoMatrix, (float)-1.0 / widthRatio, (float)1.0 / widthRatio,
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(float)-1.0 / heightRatio, (float)1.0 / heightRatio, -1,1 );
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kmGLMultMatrix(&orthoMatrix);
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &_oldFBO);
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glBindFramebuffer(GL_FRAMEBUFFER, _FBO);
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//TODO move this to configration, so we don't check it every time
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/* Certain Qualcomm Andreno gpu's will retain data in memory after a frame buffer switch which corrupts the render to the texture. The solution is to clear the frame buffer before rendering to the texture. However, calling glClear has the unintended result of clearing the current texture. Create a temporary texture to overcome this. At the end of RenderTexture::begin(), switch the attached texture to the second one, call glClear, and then switch back to the original texture. This solution is unnecessary for other devices as they don't have the same issue with switching frame buffers.
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*/
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if (Configuration::getInstance()->checkForGLExtension("GL_QCOM"))
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{
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// -- bind a temporary texture so we can clear the render buffer without losing our texture
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _textureCopy->getName(), 0);
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CHECK_GL_ERROR_DEBUG();
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _texture->getName(), 0);
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}
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}
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void RenderTexture::onEnd()
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{
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Director *director = Director::getInstance();
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glBindFramebuffer(GL_FRAMEBUFFER, _oldFBO);
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// restore viewport
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director->setViewport();
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//
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kmGLMatrixMode(KM_GL_PROJECTION);
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kmGLLoadMatrix(&_oldProjMatrix);
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kmGLMatrixMode(KM_GL_MODELVIEW);
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kmGLLoadMatrix(&_oldTransMatrix);
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}
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void RenderTexture::onClear()
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{
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// save clear color
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GLfloat oldClearColor[4] = {0.0f};
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GLfloat oldDepthClearValue = 0.0f;
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GLint oldStencilClearValue = 0;
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// backup and set
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if (_clearFlags & GL_COLOR_BUFFER_BIT)
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{
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glGetFloatv(GL_COLOR_CLEAR_VALUE, oldClearColor);
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glClearColor(_clearColor.r, _clearColor.g, _clearColor.b, _clearColor.a);
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}
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if (_clearFlags & GL_DEPTH_BUFFER_BIT)
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{
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glGetFloatv(GL_DEPTH_CLEAR_VALUE, &oldDepthClearValue);
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glClearDepth(_clearDepth);
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}
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if (_clearFlags & GL_STENCIL_BUFFER_BIT)
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{
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glGetIntegerv(GL_STENCIL_CLEAR_VALUE, &oldStencilClearValue);
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glClearStencil(_clearStencil);
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}
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// clear
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glClear(_clearFlags);
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// restore
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if (_clearFlags & GL_COLOR_BUFFER_BIT)
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{
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glClearColor(oldClearColor[0], oldClearColor[1], oldClearColor[2], oldClearColor[3]);
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}
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if (_clearFlags & GL_DEPTH_BUFFER_BIT)
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{
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glClearDepth(oldDepthClearValue);
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}
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if (_clearFlags & GL_STENCIL_BUFFER_BIT)
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{
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glClearStencil(oldStencilClearValue);
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}
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}
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void RenderTexture::onClearDepth()
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{
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//! save old depth value
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GLfloat depthClearValue;
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glGetFloatv(GL_DEPTH_CLEAR_VALUE, &depthClearValue);
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glClearDepth(_clearDepth);
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glClear(GL_DEPTH_BUFFER_BIT);
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// restore clear color
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glClearDepth(depthClearValue);
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}
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NS_CC_END
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NS_CC_END
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@ -187,7 +187,16 @@ protected:
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- [[renderTexture sprite] setBlendFunc:(BlendFunc){GL_ONE, GL_ONE_MINUS_SRC_ALPHA}];
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- [[renderTexture sprite] setBlendFunc:(BlendFunc){GL_ONE, GL_ONE_MINUS_SRC_ALPHA}];
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*/
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*/
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Sprite* _sprite;
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Sprite* _sprite;
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protected:
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//renderer caches and callbacks
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void onBegin();
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void onEnd();
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void onClear();
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void onClearDepth();
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kmMat4 _oldTransMatrix, _oldProjMatrix;
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kmMat4 _transformMatrix, _projectionMatrix;
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private:
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private:
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CC_DISALLOW_COPY_AND_ASSIGN(RenderTexture);
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CC_DISALLOW_COPY_AND_ASSIGN(RenderTexture);
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@ -152,113 +152,6 @@ void NewRenderTexture::end()
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renderer->popGroup();
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renderer->popGroup();
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}
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}
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void NewRenderTexture::onBegin()
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{
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//
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kmGLGetMatrix(KM_GL_PROJECTION, &_oldProjMatrix);
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kmGLMatrixMode(KM_GL_PROJECTION);
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kmGLLoadMatrix(&_projectionMatrix);
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kmGLGetMatrix(KM_GL_MODELVIEW, &_oldTransMatrix);
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kmGLMatrixMode(KM_GL_MODELVIEW);
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kmGLLoadMatrix(&_transformMatrix);
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Director *director = Director::getInstance();
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director->setProjection(director->getProjection());
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const Size& texSize = _texture->getContentSizeInPixels();
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// Calculate the adjustment ratios based on the old and new projections
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Size size = director->getWinSizeInPixels();
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float widthRatio = size.width / texSize.width;
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float heightRatio = size.height / texSize.height;
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// Adjust the orthographic projection and viewport
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glViewport(0, 0, (GLsizei)texSize.width, (GLsizei)texSize.height);
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kmMat4 orthoMatrix;
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kmMat4OrthographicProjection(&orthoMatrix, (float)-1.0 / widthRatio, (float)1.0 / widthRatio,
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(float)-1.0 / heightRatio, (float)1.0 / heightRatio, -1,1 );
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kmGLMultMatrix(&orthoMatrix);
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &_oldFBO);
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glBindFramebuffer(GL_FRAMEBUFFER, _FBO);
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//TODO move this to configration, so we don't check it every time
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/* Certain Qualcomm Andreno gpu's will retain data in memory after a frame buffer switch which corrupts the render to the texture. The solution is to clear the frame buffer before rendering to the texture. However, calling glClear has the unintended result of clearing the current texture. Create a temporary texture to overcome this. At the end of RenderTexture::begin(), switch the attached texture to the second one, call glClear, and then switch back to the original texture. This solution is unnecessary for other devices as they don't have the same issue with switching frame buffers.
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*/
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if (Configuration::getInstance()->checkForGLExtension("GL_QCOM"))
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{
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// -- bind a temporary texture so we can clear the render buffer without losing our texture
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _textureCopy->getName(), 0);
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CHECK_GL_ERROR_DEBUG();
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _texture->getName(), 0);
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}
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}
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void NewRenderTexture::onEnd()
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{
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Director *director = Director::getInstance();
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glBindFramebuffer(GL_FRAMEBUFFER, _oldFBO);
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// restore viewport
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director->setViewport();
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//
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kmGLMatrixMode(KM_GL_PROJECTION);
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kmGLLoadMatrix(&_oldProjMatrix);
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kmGLMatrixMode(KM_GL_MODELVIEW);
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kmGLLoadMatrix(&_oldTransMatrix);
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}
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void NewRenderTexture::onClear()
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{
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// save clear color
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GLfloat oldClearColor[4] = {0.0f};
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GLfloat oldDepthClearValue = 0.0f;
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GLint oldStencilClearValue = 0;
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// backup and set
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if (_clearFlags & GL_COLOR_BUFFER_BIT)
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{
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glGetFloatv(GL_COLOR_CLEAR_VALUE, oldClearColor);
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glClearColor(_clearColor.r, _clearColor.g, _clearColor.b, _clearColor.a);
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}
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if (_clearFlags & GL_DEPTH_BUFFER_BIT)
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{
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glGetFloatv(GL_DEPTH_CLEAR_VALUE, &oldDepthClearValue);
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glClearDepth(_clearDepth);
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}
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if (_clearFlags & GL_STENCIL_BUFFER_BIT)
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{
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glGetIntegerv(GL_STENCIL_CLEAR_VALUE, &oldStencilClearValue);
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glClearStencil(_clearStencil);
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}
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// clear
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glClear(_clearFlags);
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// restore
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if (_clearFlags & GL_COLOR_BUFFER_BIT)
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{
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glClearColor(oldClearColor[0], oldClearColor[1], oldClearColor[2], oldClearColor[3]);
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}
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if (_clearFlags & GL_DEPTH_BUFFER_BIT)
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{
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glClearDepth(oldDepthClearValue);
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}
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if (_clearFlags & GL_STENCIL_BUFFER_BIT)
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{
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glClearStencil(oldStencilClearValue);
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}
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}
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void NewRenderTexture::clearDepth(float depthValue)
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void NewRenderTexture::clearDepth(float depthValue)
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{
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{
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setClearDepth(depthValue);
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setClearDepth(depthValue);
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@ -274,19 +167,6 @@ void NewRenderTexture::clearDepth(float depthValue)
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this->end();
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this->end();
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}
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}
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void NewRenderTexture::onClearDepth()
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{
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//! save old depth value
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GLfloat depthClearValue;
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glGetFloatv(GL_DEPTH_CLEAR_VALUE, &depthClearValue);
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glClearDepth(_clearDepth);
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glClear(GL_DEPTH_BUFFER_BIT);
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// restore clear color
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glClearDepth(depthClearValue);
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}
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NewRenderTexture::NewRenderTexture()
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NewRenderTexture::NewRenderTexture()
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:RenderTexture()
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:RenderTexture()
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{
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{
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@ -46,16 +46,6 @@ protected:
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protected:
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protected:
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NewRenderTexture();
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NewRenderTexture();
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virtual ~NewRenderTexture();
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virtual ~NewRenderTexture();
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void onBegin();
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void onEnd();
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//Clear render buffer
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void onClear();
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void onClearDepth();
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kmMat4 _oldTransMatrix, _oldProjMatrix;
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kmMat4 _transformMatrix, _projectionMatrix;
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};
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};
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NS_CC_END
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NS_CC_END
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