mirror of https://github.com/axmolengine/axmol.git
84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
#include "RenderTargetGL.h"
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#include "DriverGL.h"
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#include "renderer/backend/opengl/MacrosGL.h"
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NS_AX_BACKEND_BEGIN
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RenderTargetGL::RenderTargetGL(bool defaultRenderTarget, DriverGL* driver) : RenderTarget(defaultRenderTarget)
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{
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if (!defaultRenderTarget)
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{
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glGenFramebuffers(1, &_FBO);
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}
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else
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{
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_FBO = driver->getDefaultFBO();
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}
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}
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RenderTargetGL::~RenderTargetGL()
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{
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if (!_defaultRenderTarget)
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{
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bindFrameBuffer();
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for (auto slot = 0; slot < MAX_COLOR_ATTCHMENT; ++slot)
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + slot, GL_TEXTURE_2D, 0, 0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
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unbindFrameBuffer();
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glDeleteFramebuffers(1, &_FBO);
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CHECK_GL_ERROR_DEBUG();
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}
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}
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void RenderTargetGL::bindFrameBuffer() const
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{
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__gl->bindFrameBuffer(_FBO);
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}
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void RenderTargetGL::unbindFrameBuffer() const
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{
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__gl->bindFrameBuffer(0);
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}
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void RenderTargetGL::update() const {
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if (!_dirty) return;
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if(!_defaultRenderTarget) {
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if(bitmask::any(_flags, TargetBufferFlags::COLOR_ALL))
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{ // color attachments
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GLenum bufs[MAX_COLOR_ATTCHMENT] = {GL_NONE};
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for (size_t i = 0; i < MAX_COLOR_ATTCHMENT; ++i)
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{
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if (bitmask::any(_flags, getMRTColorFlag(i)))
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{
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auto textureInfo = _color[i];
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auto textureHandler = static_cast<GLuint>(textureInfo.texture != nullptr ? textureInfo.texture->getHandler() : 0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i, GL_TEXTURE_2D, textureHandler,
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textureInfo.level);
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bufs[i] = GL_COLOR_ATTACHMENT0 + i;
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}
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}
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#if AX_TARGET_PLATFORM == AX_PLATFORM_WIN32 || AX_TARGET_PLATFORM == AX_PLATFORM_LINUX
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glDrawBuffers(MAX_COLOR_ATTCHMENT, bufs);
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#endif
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CHECK_GL_ERROR_DEBUG();
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}
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// depth attacmhemt
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D,
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_depth.texture != nullptr ? _depth.texture->getHandler() : 0, _depth.level);
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CHECK_GL_ERROR_DEBUG();
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// stencil attachment
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D,
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_stencil.texture != nullptr ? _stencil.texture->getHandler() : 0, _stencil.level);
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CHECK_GL_ERROR_DEBUG();
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}
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_dirty = false;
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}
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NS_AX_BACKEND_END
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