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@@ -14,121 +14,6 @@ namespace graphics
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{
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namespace opengl
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{
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-
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- // strategy for fbo creation, interchangable at runtime:
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- // none, opengl >= 3.0, extensions
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- struct FramebufferStrategy {
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- /// create a new framebuffer, depthbuffer and texture
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- /**
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- * @param[out] framebuffer Framebuffer name
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- * @param[out] depthbuffer Depthbuffer name
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- * @param[out] img Texture name
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- * @param[in] width Width of framebuffer
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- * @param[in] height Height of framebuffer
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- * @return Creation status
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- */
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- virtual GLenum createFBO(GLuint&, GLuint&, GLuint&, int, int)
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- { return GL_FRAMEBUFFER_UNSUPPORTED; }
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- /// remove objects
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- /**
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- * @param[in] framebuffer Framebuffer name
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- * @param[in] depthbuffer Depthbuffer name
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- * @param[in] img Texture name
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- */
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- virtual void deleteFBO(GLuint, GLuint, GLuint) {}
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- virtual void bindFBO(GLuint) {}
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- };
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-
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- struct FramebufferStrategyGL3 : public FramebufferStrategy {
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- virtual GLenum createFBO(GLuint& framebuffer, GLuint& depthbuffer, GLuint& img, int width, int height)
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- {
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- // generate depth buffer
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- glGenRenderbuffers(1, &depthbuffer);
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- glBindRenderbuffer(GL_RENDERBUFFER, depthbuffer);
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- glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height);
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- glBindRenderbuffer(GL_RENDERBUFFER, 0);
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-
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- // generate texture save target
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- glGenTextures(1, &img);
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- glBindTexture(GL_TEXTURE_2D, img);
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- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height,
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- 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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- glBindTexture(GL_TEXTURE_2D, 0);
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-
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- // create framebuffer
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- glGenFramebuffers(1, &framebuffer);
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- glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
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- glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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- GL_TEXTURE_2D, img, 0);
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- glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
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- GL_RENDERBUFFER, depthbuffer);
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- GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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-
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- // unbind buffers and texture
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- glBindFramebuffer(GL_FRAMEBUFFER, 0);
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- return status;
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- }
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- virtual void deleteFBO(GLuint framebuffer, GLuint depthbuffer, GLuint img)
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- {
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- glDeleteTextures(1, &img);
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- glDeleteRenderbuffers(1, &depthbuffer);
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- glDeleteFramebuffers(1, &framebuffer);
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- }
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-
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- virtual void bindFBO(GLuint framebuffer)
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- {
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- glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
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- }
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- };
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-
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- struct FramebufferStrategyEXT : public FramebufferStrategy {
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-
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- virtual GLenum createFBO(GLuint& framebuffer, GLuint& depthbuffer, GLuint& img, int width, int height)
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- {
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- // generate depth buffer
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- glGenRenderbuffersEXT(1, &depthbuffer);
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- glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depthbuffer);
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- glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT16, width, height);
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- glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
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-
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- // generate texture save target
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- glGenTextures(1, &img);
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- glBindTexture(GL_TEXTURE_2D, img);
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- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height,
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- 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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- glBindTexture(GL_TEXTURE_2D, 0);
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-
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- // create framebuffer
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- glGenFramebuffersEXT(1, &framebuffer);
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- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebuffer);
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- glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
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- GL_TEXTURE_2D, img, 0);
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- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
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- GL_RENDERBUFFER_EXT, depthbuffer);
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- GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
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-
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- // unbind buffers and texture
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- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
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- return status;
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- }
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-
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- virtual void deleteFBO(GLuint framebuffer, GLuint depthbuffer, GLuint img)
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- {
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- glDeleteTextures(1, &img);
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- glDeleteRenderbuffersEXT(1, &depthbuffer);
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- glDeleteFramebuffersEXT(1, &framebuffer);
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- }
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-
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- virtual void bindFBO(GLuint framebuffer)
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- {
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- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebuffer);
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- }
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- };
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-
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class Framebuffer : public Drawable, public Volatile
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{
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public:
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@@ -159,14 +44,6 @@ namespace opengl
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vertex vertices[4];
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GLenum status;
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-
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- FramebufferStrategy* strategy;
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-
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- FramebufferStrategy strategyNone;
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-
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- FramebufferStrategyGL3 strategyGL3;
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-
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- FramebufferStrategyEXT strategyEXT;
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};
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} // opengl
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