mirror of https://github.com/axmolengine/axmol.git
move begin(), end(),draw() to RenderTexture
This commit is contained in:
Huabing.Xu
parent
fad585fbef
commit
a7a50dffcc
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@ -37,6 +37,11 @@ THE SOFTWARE.
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#include "CCNotificationCenter.h"
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#include "CCEventType.h"
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#include "CCGrid.h"
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#include "CCRenderer.h"
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#include "CCGroupCommand.h"
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#include "CCCustomCommand.h"
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// extern
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#include "kazmath/GL/matrix.h"
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@ -296,47 +301,6 @@ bool RenderTexture::initWithWidthAndHeight(int w, int h, Texture2D::PixelFormat
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return ret;
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}
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void RenderTexture::begin()
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{
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kmGLMatrixMode(KM_GL_PROJECTION);
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kmGLPushMatrix();
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kmGLMatrixMode(KM_GL_MODELVIEW);
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kmGLPushMatrix();
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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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/* 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::beginWithClear(float r, float g, float b, float a)
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{
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_beginWithClear(r, g, b, a, 0, 0, GL_COLOR_BUFFER_BIT);
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@ -354,61 +318,21 @@ void RenderTexture::beginWithClear(float r, float g, float b, float a, float dep
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void RenderTexture::_beginWithClear(float r, float g, float b, float a, float depthValue, int stencilValue, GLbitfield flags)
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{
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setClearColor(Color4F(r, g, b, a));
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setClearDepth(depthValue);
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setClearStencil(stencilValue);
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setClearFlags(flags);
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this->begin();
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// save clear color
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GLfloat clearColor[4] = {0.0f};
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GLfloat depthClearValue = 0.0f;
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int stencilClearValue = 0;
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if (flags & GL_COLOR_BUFFER_BIT)
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{
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glGetFloatv(GL_COLOR_CLEAR_VALUE,clearColor);
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glClearColor(r, g, b, a);
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}
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if (flags & GL_DEPTH_BUFFER_BIT)
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{
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glGetFloatv(GL_DEPTH_CLEAR_VALUE, &depthClearValue);
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glClearDepth(depthValue);
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}
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if (flags & GL_STENCIL_BUFFER_BIT)
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{
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glGetIntegerv(GL_STENCIL_CLEAR_VALUE, &stencilClearValue);
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glClearStencil(stencilValue);
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}
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glClear(flags);
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// restore
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if (flags & GL_COLOR_BUFFER_BIT)
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{
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glClearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
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}
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if (flags & GL_DEPTH_BUFFER_BIT)
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{
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glClearDepth(depthClearValue);
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}
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if (flags & GL_STENCIL_BUFFER_BIT)
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{
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glClearStencil(stencilClearValue);
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}
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}
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void RenderTexture::end()
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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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kmGLMatrixMode(KM_GL_PROJECTION);
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kmGLPopMatrix();
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kmGLMatrixMode(KM_GL_MODELVIEW);
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kmGLPopMatrix();
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//clear screen
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CustomCommand* clearCmd = CustomCommand::getCommandPool().generateCommand();
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clearCmd->init(0, _vertexZ);
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clearCmd->func = CC_CALLBACK_0(RenderTexture::onClear, this);
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Director::getInstance()->getRenderer()->addCommand(clearCmd);
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}
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//TODO find a better way to clear the screen, there is no need to rebind render buffer there.
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@ -420,16 +344,16 @@ void RenderTexture::clear(float r, float g, float b, float a)
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void RenderTexture::clearDepth(float depthValue)
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{
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setClearDepth(depthValue);
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this->begin();
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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(depthValue);
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glClear(GL_DEPTH_BUFFER_BIT);
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CustomCommand* cmd = CustomCommand::getCommandPool().generateCommand();
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cmd->init(0, _vertexZ);
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cmd->func = CC_CALLBACK_0(RenderTexture::onClearDepth, this);
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Director::getInstance()->getRenderer()->addCommand(cmd);
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// restore clear color
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glClearDepth(depthClearValue);
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this->end();
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}
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@ -466,69 +390,6 @@ void RenderTexture::visit()
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_orderOfArrival = 0;
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}
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void RenderTexture::draw()
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{
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if( _autoDraw)
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{
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begin();
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if (_clearFlags)
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{
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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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//! make sure all children are drawn
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sortAllChildren();
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for(const auto &child : _children) {
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if (child != _sprite)
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{
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child->visit();
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}
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}
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end();
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}
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}
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bool RenderTexture::saveToFile(const std::string& filename)
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{
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bool ret = false;
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@ -745,4 +606,66 @@ void RenderTexture::onClearDepth()
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glClearDepth(depthClearValue);
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}
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void RenderTexture::draw()
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{
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if (_autoDraw)
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{
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//Begin will create a render group using new render target
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begin();
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//clear screen
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CustomCommand* clearCmd = CustomCommand::getCommandPool().generateCommand();
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clearCmd->init(0, _vertexZ);
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clearCmd->func = CC_CALLBACK_0(RenderTexture::onClear, this);
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Director::getInstance()->getRenderer()->addCommand(clearCmd);
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//! make sure all children are drawn
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sortAllChildren();
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for(const auto &child: _children)
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{
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if (child != _sprite)
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child->visit();
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}
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//End will pop the current render group
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end();
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}
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}
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void RenderTexture::begin()
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{
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kmGLMatrixMode(KM_GL_PROJECTION);
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kmGLPushMatrix();
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kmGLGetMatrix(KM_GL_PROJECTION, &_projectionMatrix);
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kmGLMatrixMode(KM_GL_MODELVIEW);
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kmGLPushMatrix();
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kmGLGetMatrix(KM_GL_MODELVIEW, &_transformMatrix);
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GroupCommand* groupCommand = GroupCommand::getCommandPool().generateCommand();
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groupCommand->init(0, _vertexZ);
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Renderer *renderer = Director::getInstance()->getRenderer();
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renderer->addCommand(groupCommand);
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renderer->pushGroup(groupCommand->getRenderQueueID());
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CustomCommand* beginCmd = CustomCommand::getCommandPool().generateCommand();
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beginCmd->init(0, _vertexZ);
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beginCmd->func = CC_CALLBACK_0(RenderTexture::onBegin, this);
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Director::getInstance()->getRenderer()->addCommand(beginCmd);
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}
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void RenderTexture::end()
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{
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CustomCommand* endCmd = CustomCommand::getCommandPool().generateCommand();
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endCmd->init(0, _vertexZ);
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endCmd->func = CC_CALLBACK_0(RenderTexture::onEnd, this);
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Renderer *renderer = Director::getInstance()->getRenderer();
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renderer->addCommand(endCmd);
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renderer->popGroup();
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}
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NS_CC_END
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@ -71,102 +71,6 @@ NewRenderTexture* NewRenderTexture::create(int w, int h)
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return nullptr;
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}
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void NewRenderTexture::draw()
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{
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if (_autoDraw)
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{
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//Begin will create a render group using new render target
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begin();
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//clear screen
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CustomCommand* clearCmd = CustomCommand::getCommandPool().generateCommand();
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clearCmd->init(0, _vertexZ);
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clearCmd->func = CC_CALLBACK_0(NewRenderTexture::onClear, this);
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Director::getInstance()->getRenderer()->addCommand(clearCmd);
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//! make sure all children are drawn
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sortAllChildren();
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for(const auto &child: _children)
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{
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if (child != _sprite)
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child->visit();
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}
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//End will pop the current render group
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end();
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}
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}
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void NewRenderTexture::_beginWithClear(float r, float g, float b, float a, float depthValue, int stencilValue, GLbitfield flags)
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{
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setClearColor(Color4F(r, g, b, a));
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setClearDepth(depthValue);
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setClearStencil(stencilValue);
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setClearFlags(flags);
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this->begin();
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//clear screen
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CustomCommand* clearCmd = CustomCommand::getCommandPool().generateCommand();
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clearCmd->init(0, _vertexZ);
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clearCmd->func = CC_CALLBACK_0(NewRenderTexture::onClear, this);
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Director::getInstance()->getRenderer()->addCommand(clearCmd);
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}
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void NewRenderTexture::begin()
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{
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kmGLMatrixMode(KM_GL_PROJECTION);
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kmGLPushMatrix();
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kmGLGetMatrix(KM_GL_PROJECTION, &_projectionMatrix);
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kmGLMatrixMode(KM_GL_MODELVIEW);
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kmGLPushMatrix();
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kmGLGetMatrix(KM_GL_MODELVIEW, &_transformMatrix);
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GroupCommand* groupCommand = GroupCommand::getCommandPool().generateCommand();
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groupCommand->init(0, _vertexZ);
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Renderer *renderer = Director::getInstance()->getRenderer();
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renderer->addCommand(groupCommand);
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renderer->pushGroup(groupCommand->getRenderQueueID());
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CustomCommand* beginCmd = CustomCommand::getCommandPool().generateCommand();
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beginCmd->init(0, _vertexZ);
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beginCmd->func = CC_CALLBACK_0(NewRenderTexture::onBegin, this);
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Director::getInstance()->getRenderer()->addCommand(beginCmd);
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}
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void NewRenderTexture::end()
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{
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CustomCommand* endCmd = CustomCommand::getCommandPool().generateCommand();
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endCmd->init(0, _vertexZ);
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endCmd->func = CC_CALLBACK_0(NewRenderTexture::onEnd, this);
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Renderer *renderer = Director::getInstance()->getRenderer();
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renderer->addCommand(endCmd);
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renderer->popGroup();
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}
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void NewRenderTexture::clearDepth(float depthValue)
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{
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setClearDepth(depthValue);
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this->begin();
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CustomCommand* cmd = CustomCommand::getCommandPool().generateCommand();
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cmd->init(0, _vertexZ);
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cmd->func = CC_CALLBACK_0(NewRenderTexture::onClearDepth, this);
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Director::getInstance()->getRenderer()->addCommand(cmd);
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this->end();
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}
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NewRenderTexture::NewRenderTexture()
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:RenderTexture()
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{
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@ -36,13 +36,12 @@ public:
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static NewRenderTexture* create(int w, int h, Texture2D::PixelFormat eFormat);
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static NewRenderTexture* create(int w, int h);
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virtual void begin() override;
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virtual void end() override;
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virtual void draw() override;
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//virtual void begin() override;
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//virtual void end() override;
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void clearDepth(float depthValue);
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//void clearDepth(float depthValue);
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protected:
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virtual void _beginWithClear(float r, float g, float b, float a, float depthValue, int stencilValue, GLbitfield flags) override;
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//virtual void _beginWithClear(float r, float g, float b, float a, float depthValue, int stencilValue, GLbitfield flags) override;
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protected:
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NewRenderTexture();
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virtual ~NewRenderTexture();
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