731 lines
19 KiB
C++
731 lines
19 KiB
C++
#ifndef GLW_FRAMEBUFFER_H
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#define GLW_FRAMEBUFFER_H
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#include "./texture2d.h"
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#include "./renderbuffer.h"
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#include <vector>
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#include <map>
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#include <set>
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namespace glw
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{
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class RenderTarget
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{
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public:
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typedef void BaseType;
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typedef RenderTarget ThisType;
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RenderableHandle target;
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GLint level;
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GLint layer;
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GLenum face;
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RenderTarget(void)
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{
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this->clear();
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}
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RenderTarget(RenderableHandle & rTarget, GLint rLevel, GLint rLayer, GLenum rFace)
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: target (rTarget)
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, level (rLevel)
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, layer (rLayer)
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, face (rFace)
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{
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;
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}
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RenderTarget(RenderableHandle & rTarget)
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: target (rTarget)
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, level (0)
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, layer (0)
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, face (GL_NONE)
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{
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;
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}
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void clear(void)
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{
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this->target.setNull();
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this->level = 0;
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this->layer = -1;
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this->face = GL_NONE;
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}
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bool isNull(void) const
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{
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return this->target.isNull();
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}
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};
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typedef std::vector<RenderTarget> RenderTargetVector;
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inline RenderTarget texture2DTarget(Texture2DHandle & handle, GLint level = 0)
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{
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return RenderTarget(handle, level, 0, GL_NONE);
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}
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inline RenderTarget renderbufferTarget(RenderbufferHandle & handle)
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{
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return RenderTarget(handle, 0, 0, GL_NONE);
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}
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class RenderTargetMapping
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{
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public:
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typedef void BaseType;
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typedef RenderTargetMapping ThisType;
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typedef std::map<GLuint, RenderTarget> Map;
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typedef Map::const_iterator ConstIterator;
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typedef Map::iterator Iterator;
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typedef Map::value_type Value;
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Map bindings;
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RenderTargetMapping(void)
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{
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this->clear();
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}
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void clear(void)
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{
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this->bindings.clear();
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}
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const RenderTarget & operator [] (GLuint attachmentIndex) const
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{
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return this->bindings.find(attachmentIndex)->second;
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}
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RenderTarget & operator [] (GLuint attachmentIndex)
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{
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return this->bindings[attachmentIndex];
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}
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};
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class RenderTargetBinding
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{
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public:
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typedef void BaseType;
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typedef RenderTargetBinding ThisType;
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typedef std::map<GLuint, GLuint> Map;
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typedef Map::const_iterator ConstIterator;
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typedef Map::iterator Iterator;
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typedef Map::value_type Value;
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Map bindings;
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RenderTargetBinding(void)
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{
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this->clear();
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}
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void clear(void)
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{
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this->bindings.clear();
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}
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GLuint operator [] (GLuint attachmentIndex) const
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{
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return this->bindings.find(attachmentIndex)->second;
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}
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GLuint & operator [] (GLuint attachmentIndex)
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{
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return this->bindings[attachmentIndex];
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}
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};
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class FramebufferArguments : public ObjectArguments
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{
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public:
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typedef ObjectArguments BaseType;
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typedef FramebufferArguments ThisType;
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RenderTargetMapping colorTargets;
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RenderTarget depthTarget;
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RenderTarget stencilTarget;
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RenderTargetBinding targetInputs;
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FramebufferArguments(void)
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: BaseType()
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{
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;
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}
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void clear(void)
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{
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BaseType::clear();
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this->colorTargets .clear();
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this->depthTarget .clear();
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this->stencilTarget .clear();
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this->targetInputs .clear();
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}
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};
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class Framebuffer : public Object
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{
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friend class Context;
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public:
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typedef Object BaseType;
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typedef Framebuffer ThisType;
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virtual ~Framebuffer(void)
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{
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this->destroy();
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}
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virtual Type type(void) const
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{
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return FramebufferType;
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}
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const FramebufferArguments & arguments(void) const
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{
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return this->m_config;
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}
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bool setColorTarget(GLenum target, GLint unit, GLint index, const RenderTarget & renderTarget)
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{
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(void)unit;
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GLW_ASSERT(this->isValid());
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this->m_config.colorTargets[index].clear();
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const bool r = this->attachTarget(target, GL_COLOR_ATTACHMENT0 + index, renderTarget);
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if (!r) return false;
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this->m_config.colorTargets[index] = renderTarget;
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return true;
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}
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bool removeColorTarget(GLenum target, GLint unit, GLint index)
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{
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(void)unit;
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GLW_ASSERT(this->isValid());
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glFramebufferRenderbuffer(target, GL_COLOR_ATTACHMENT0 + index, GL_RENDERBUFFER, 0);
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this->m_config.colorTargets[index].clear();
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return true;
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}
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bool setDepthTarget(GLenum target, GLint unit, const RenderTarget & renderTarget)
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{
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(void)unit;
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GLW_ASSERT(this->isValid());
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this->m_config.depthTarget.clear();
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const bool r = this->attachTarget(target, GL_DEPTH_ATTACHMENT, renderTarget);
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if (!r) return false;
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this->m_config.depthTarget = renderTarget;
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return true;
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}
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bool removeDepthTarget(GLenum target, GLint unit)
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{
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(void)unit;
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GLW_ASSERT(this->isValid());
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glFramebufferRenderbuffer(target, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, 0);
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this->m_config.depthTarget.clear();
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return true;
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}
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bool setStencilTarget(GLenum target, GLint unit, const RenderTarget & renderTarget)
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{
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(void)unit;
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GLW_ASSERT(this->isValid());
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this->m_config.stencilTarget.clear();
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const bool r = this->attachTarget(target, GL_STENCIL_ATTACHMENT, renderTarget);
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if (!r) return false;
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this->m_config.stencilTarget = renderTarget;
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return true;
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}
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bool removeStencilTarget(GLenum target, GLint unit)
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{
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(void)unit;
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GLW_ASSERT(this->isValid());
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glFramebufferRenderbuffer(target, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
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this->m_config.stencilTarget.clear();
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return true;
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}
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bool readColorPixels(GLenum target, GLint unit, GLint index, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid * data)
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{
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(void)target;
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(void)unit;
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GLW_ASSERT(this->isValid());
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if (this->m_config.colorTargets.bindings.count(index) <= 0)
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{
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GLW_ASSERT(0);
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return false;
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}
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glReadBuffer(GL_COLOR_ATTACHMENT0 + index);
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glReadPixels(x, y, width, height, format, type, data);
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return true;
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}
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bool readDepthPixels(GLenum target, GLint unit, GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
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{
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(void)target;
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(void)unit;
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GLW_ASSERT(this->isValid());
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if (this->m_config.depthTarget.isNull())
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{
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GLW_ASSERT(0);
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return false;
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}
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glReadPixels(x, y, width, height, GL_DEPTH_COMPONENT, type, data);
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return true;
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}
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bool readStencilPixels(GLenum target, GLint unit, GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
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{
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(void)target;
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(void)unit;
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GLW_ASSERT(this->isValid());
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if (this->m_config.stencilTarget.isNull())
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{
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GLW_ASSERT(0);
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return false;
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}
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glReadPixels(x, y, width, height, GL_STENCIL_INDEX, type, data);
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return true;
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}
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protected:
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Framebuffer(Context * ctx)
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: BaseType(ctx)
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{
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;
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}
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bool create(const FramebufferArguments & args)
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{
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this->destroy();
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GLint boundNameDraw = 0;
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glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &boundNameDraw);
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GLint boundNameRead = 0;
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glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &boundNameRead);
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glGenFramebuffers(1, &(this->m_name));
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glBindFramebuffer(GL_FRAMEBUFFER, this->m_name);
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this->configure(GL_FRAMEBUFFER, args);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, boundNameDraw);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, boundNameRead);
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return true;
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}
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virtual void doDestroy(void)
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{
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glDeleteFramebuffers(1, &(this->m_name));
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this->m_config.clear();
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}
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virtual bool doIsValid(void) const
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{
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return true;
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}
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private:
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FramebufferArguments m_config;
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void configure(GLenum target, const FramebufferArguments & args)
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{
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this->m_config.clear();
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for (RenderTargetMapping::ConstIterator it=args.colorTargets.bindings.begin(); it!=args.colorTargets.bindings.end(); ++it)
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{
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const bool colorAttached = this->attachTarget(target, GL_COLOR_ATTACHMENT0 + it->first, it->second);
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if (!colorAttached) continue;
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this->m_config.colorTargets[it->first] = it->second;
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}
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const bool depthAttached = this->attachTarget(target, GL_DEPTH_ATTACHMENT, args.depthTarget);
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if (depthAttached) this->m_config.depthTarget = args.depthTarget;
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const bool stencilAttached = this->attachTarget(target, GL_STENCIL_ATTACHMENT, args.stencilTarget);
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if (stencilAttached) this->m_config.stencilTarget = args.stencilTarget;
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if (this->m_config.colorTargets.bindings.empty())
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{
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glDrawBuffer(GL_NONE);
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glReadBuffer(GL_NONE);
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}
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else
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{
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std::vector<GLenum> drawBuffers;
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drawBuffers.reserve(args.targetInputs.bindings.size());
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for (RenderTargetBinding::ConstIterator it=args.targetInputs.bindings.begin(); it!=args.targetInputs.bindings.end(); ++it)
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{
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const GLuint fragOutput = it->second;
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const GLuint attachmentIndex = GL_COLOR_ATTACHMENT0 + it->first;
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if (drawBuffers.size() <= size_t(fragOutput))
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{
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drawBuffers.resize(size_t(fragOutput + 1), GL_NONE);
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}
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drawBuffers[fragOutput] = attachmentIndex;
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this->m_config.targetInputs[it->first] = fragOutput;
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}
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glDrawBuffers(GLsizei(drawBuffers.size()), &(drawBuffers[0]));
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glReadBuffer(drawBuffers[0]);
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}
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}
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bool attachTarget(GLenum target, GLenum attachment, const RenderTarget & renderTarget)
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{
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const RenderableHandle & handle = renderTarget.target;
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if (!handle)
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{
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glFramebufferRenderbuffer(target, attachment, GL_RENDERBUFFER, 0);
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return false;
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}
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switch (handle->type())
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{
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case RenderbufferType : glFramebufferRenderbuffer (target, attachment, GL_RENDERBUFFER, handle->name() ); break;
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case Texture2DType : glFramebufferTexture2D (target, attachment, GL_TEXTURE_2D, handle->name(), renderTarget.level); break;
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default : GLW_ASSERT(0); break;
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}
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return true;
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}
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};
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namespace detail { template <> struct BaseOf <Framebuffer> { typedef Object Type; }; };
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typedef detail::ObjectSharedPointerTraits <Framebuffer> ::Type FramebufferPtr;
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class SafeFramebuffer : public SafeObject
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{
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friend class Context;
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friend class BoundFramebuffer;
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public:
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typedef SafeObject BaseType;
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typedef SafeFramebuffer ThisType;
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const FramebufferArguments & arguments(void) const
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{
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return this->object()->arguments();
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}
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protected:
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SafeFramebuffer(const FramebufferPtr & program)
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: BaseType(program)
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{
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;
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}
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const FramebufferPtr & object(void) const
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{
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return static_cast<const FramebufferPtr &>(BaseType::object());
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}
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FramebufferPtr & object(void)
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{
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return static_cast<FramebufferPtr &>(BaseType::object());
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}
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};
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namespace detail { template <> struct BaseOf <SafeFramebuffer> { typedef SafeObject Type; }; };
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namespace detail { template <> struct ObjectBase <SafeFramebuffer> { typedef Framebuffer Type; }; };
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namespace detail { template <> struct ObjectSafe <Framebuffer > { typedef SafeFramebuffer Type; }; };
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typedef detail::ObjectSharedPointerTraits <SafeFramebuffer> ::Type FramebufferHandle;
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class FramebufferBindingParams : public ObjectBindingParams
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{
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public:
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typedef ObjectBindingParams BaseType;
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typedef FramebufferBindingParams ThisType;
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FramebufferBindingParams(void)
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: BaseType()
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{
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;
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}
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FramebufferBindingParams(GLenum target)
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: BaseType(target, 0)
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{
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;
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}
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};
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class BoundFramebuffer : public BoundObject
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{
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friend class Context;
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public:
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typedef BoundObject BaseType;
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typedef BoundFramebuffer ThisType;
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BoundFramebuffer(void)
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: BaseType()
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{
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;
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}
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const FramebufferHandle & handle(void) const
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{
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return static_cast<const FramebufferHandle &>(BaseType::handle());
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}
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FramebufferHandle & handle(void)
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{
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return static_cast<FramebufferHandle &>(BaseType::handle());
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}
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GLenum getStatus(void) const
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{
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return glCheckFramebufferStatus(this->m_target);
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}
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bool isComplete(void) const
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{
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return (this->getStatus() == GL_FRAMEBUFFER_COMPLETE);
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}
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bool setColorTarget(GLint index, const RenderTarget & renderTarget)
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{
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return this->object()->setColorTarget(this->m_target, this->m_unit, index, renderTarget);
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}
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bool removeColorTarget(GLint index)
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{
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return this->object()->removeColorTarget(this->m_target, this->m_unit, index);
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}
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bool setDepthTarget(const RenderTarget & renderTarget)
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{
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return this->object()->setDepthTarget(this->m_target, this->m_unit, renderTarget);
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}
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bool removeDepthTarget(void)
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{
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return this->object()->removeDepthTarget(this->m_target, this->m_unit);
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}
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bool setStencilTarget(const RenderTarget & renderTarget)
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{
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return this->object()->setStencilTarget(this->m_target, this->m_unit, renderTarget);
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}
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bool removeStencilTarget(void)
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{
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return this->object()->removeStencilTarget(this->m_target, this->m_unit);
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}
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protected:
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BoundFramebuffer(const FramebufferHandle & handle, const FramebufferBindingParams & params)
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: BaseType(handle, params)
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{
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;
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}
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const FramebufferPtr & object(void) const
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{
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return this->handle()->object();
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}
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FramebufferPtr & object(void)
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{
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return this->handle()->object();
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}
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virtual void bind(void)
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{
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glBindFramebuffer(this->m_target, this->object()->name());
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}
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virtual void unbind(void)
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{
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glBindFramebuffer(this->m_target, 0);
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}
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};
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namespace detail { template <> struct ParamsOf <BoundFramebuffer> { typedef FramebufferBindingParams Type; }; };
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namespace detail { template <> struct BaseOf <BoundFramebuffer> { typedef BoundObject Type; }; };
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namespace detail { template <> struct ObjectBase <BoundFramebuffer> { typedef Framebuffer Type; }; };
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namespace detail { template <> struct ObjectBound <Framebuffer > { typedef BoundFramebuffer Type; }; };
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typedef detail::ObjectSharedPointerTraits <BoundFramebuffer> ::Type BoundFramebufferHandle;
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|
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class ReadFramebufferBindingParams : public FramebufferBindingParams
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{
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public:
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typedef FramebufferBindingParams BaseType;
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typedef ReadFramebufferBindingParams ThisType;
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|
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ReadFramebufferBindingParams(void)
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: BaseType(GL_READ_FRAMEBUFFER)
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{
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;
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}
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};
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|
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class BoundReadFramebuffer : public BoundFramebuffer
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|
{
|
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friend class Context;
|
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|
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public:
|
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|
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typedef BoundFramebuffer BaseType;
|
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typedef BoundReadFramebuffer ThisType;
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|
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BoundReadFramebuffer(void)
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: BaseType()
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|
{
|
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;
|
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}
|
|
|
|
bool readColorPixels(GLint index, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid * data)
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|
{
|
|
return this->object()->readColorPixels(this->m_target, this->m_unit, index, x, y, width, height, format, type, data);
|
|
}
|
|
|
|
bool readDepthPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
|
|
{
|
|
return this->object()->readDepthPixels(this->m_target, this->m_unit, x, y, width, height, type, data);
|
|
}
|
|
|
|
bool readStencilPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
|
|
{
|
|
return this->object()->readStencilPixels(this->m_target, this->m_unit, x, y, width, height, type, data);
|
|
}
|
|
|
|
protected:
|
|
|
|
BoundReadFramebuffer(const FramebufferHandle & handle, const ReadFramebufferBindingParams & params)
|
|
: BaseType(handle, params)
|
|
{
|
|
;
|
|
}
|
|
};
|
|
|
|
namespace detail { template <> struct ParamsOf <BoundReadFramebuffer> { typedef ReadFramebufferBindingParams Type; }; };
|
|
namespace detail { template <> struct BaseOf <BoundReadFramebuffer> { typedef BoundFramebuffer Type; }; };
|
|
namespace detail { template <> struct ObjectBase <BoundReadFramebuffer> { typedef Framebuffer Type; }; };
|
|
typedef detail::ObjectSharedPointerTraits <BoundReadFramebuffer> ::Type BoundReadFramebufferHandle;
|
|
|
|
class DrawFramebufferBindingParams : public FramebufferBindingParams
|
|
{
|
|
public:
|
|
|
|
typedef FramebufferBindingParams BaseType;
|
|
typedef DrawFramebufferBindingParams ThisType;
|
|
|
|
DrawFramebufferBindingParams(void)
|
|
: BaseType(GL_DRAW_FRAMEBUFFER)
|
|
{
|
|
;
|
|
}
|
|
};
|
|
|
|
class BoundDrawFramebuffer : public BoundFramebuffer
|
|
{
|
|
friend class Context;
|
|
|
|
public:
|
|
|
|
typedef BoundFramebuffer BaseType;
|
|
typedef BoundDrawFramebuffer ThisType;
|
|
|
|
BoundDrawFramebuffer(void)
|
|
: BaseType()
|
|
{
|
|
;
|
|
}
|
|
|
|
protected:
|
|
|
|
BoundDrawFramebuffer(const FramebufferHandle & handle, const DrawFramebufferBindingParams & params)
|
|
: BaseType(handle, params)
|
|
{
|
|
;
|
|
}
|
|
};
|
|
|
|
namespace detail { template <> struct ParamsOf <BoundDrawFramebuffer> { typedef DrawFramebufferBindingParams Type; }; };
|
|
namespace detail { template <> struct BaseOf <BoundDrawFramebuffer> { typedef BoundFramebuffer Type; }; };
|
|
namespace detail { template <> struct ObjectBase <BoundDrawFramebuffer> { typedef Framebuffer Type; }; };
|
|
typedef detail::ObjectSharedPointerTraits <BoundDrawFramebuffer> ::Type BoundDrawFramebufferHandle;
|
|
|
|
class ReadDrawFramebufferBindingParams : public FramebufferBindingParams
|
|
{
|
|
public:
|
|
|
|
typedef FramebufferBindingParams BaseType;
|
|
typedef ReadDrawFramebufferBindingParams ThisType;
|
|
|
|
ReadDrawFramebufferBindingParams(void)
|
|
: BaseType(GL_FRAMEBUFFER)
|
|
{
|
|
;
|
|
}
|
|
};
|
|
|
|
class BoundReadDrawFramebuffer : public BoundFramebuffer
|
|
{
|
|
friend class Context;
|
|
|
|
public:
|
|
|
|
typedef BoundFramebuffer BaseType;
|
|
typedef BoundReadDrawFramebuffer ThisType;
|
|
|
|
BoundReadDrawFramebuffer(void)
|
|
: BaseType()
|
|
{
|
|
;
|
|
}
|
|
|
|
bool readColorPixels(GLint index, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid * data)
|
|
{
|
|
return this->object()->readColorPixels(this->m_target, this->m_unit, index, x, y, width, height, format, type, data);
|
|
}
|
|
|
|
bool readDepthPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
|
|
{
|
|
return this->object()->readDepthPixels(this->m_target, this->m_unit, x, y, width, height, type, data);
|
|
}
|
|
|
|
bool readStencilPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type, GLvoid * data)
|
|
{
|
|
return this->object()->readStencilPixels(this->m_target, this->m_unit, x, y, width, height, type, data);
|
|
}
|
|
|
|
protected:
|
|
|
|
BoundReadDrawFramebuffer(const FramebufferHandle & handle, const ReadDrawFramebufferBindingParams & params)
|
|
: BaseType(handle, params)
|
|
{
|
|
;
|
|
}
|
|
};
|
|
|
|
namespace detail { template <> struct ParamsOf <BoundReadDrawFramebuffer> { typedef ReadDrawFramebufferBindingParams Type; }; };
|
|
namespace detail { template <> struct BaseOf <BoundReadDrawFramebuffer> { typedef BoundFramebuffer Type; }; };
|
|
namespace detail { template <> struct ObjectBase <BoundReadDrawFramebuffer> { typedef Framebuffer Type; }; };
|
|
typedef detail::ObjectSharedPointerTraits <BoundReadDrawFramebuffer> ::Type BoundReadDrawFramebufferHandle;
|
|
|
|
};
|
|
|
|
#endif // GLW_FRAMEBUFFER_H
|