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@ -171,17 +171,15 @@ unsigned int OPENGL_COMPOSITOR::CreateBuffer( VECTOR2I aDimensions ) |
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if( (int) usedBuffers() >= maxBuffers ) |
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{ |
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throw std::runtime_error( "Cannot create more framebuffers. OpenGL rendering backend " |
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"requires at least 3 framebuffers. You may try to update/change " |
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"your graphic drivers." ); |
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throw std::runtime_error( "Cannot create more framebuffers. OpenGL rendering backend requires at " |
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"least 3 framebuffers. You may try to update/change your graphic drivers." ); |
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} |
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glGetIntegerv( GL_MAX_TEXTURE_SIZE, (GLint*) &maxTextureSize ); |
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if( maxTextureSize < (int) aDimensions.x || maxTextureSize < (int) aDimensions.y ) |
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{ |
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throw std::runtime_error( "Requested texture size is not supported. " |
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"Could not create a buffer." ); |
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throw std::runtime_error( "Requested texture size is not supported. Could not create a buffer." ); |
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} |
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// GL_COLOR_ATTACHMENTn are consecutive integers
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@ -197,16 +195,14 @@ unsigned int OPENGL_COMPOSITOR::CreateBuffer( VECTOR2I aDimensions ) |
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// Set texture parameters
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glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); |
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glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, aDimensions.x, aDimensions.y, 0, GL_RGBA, |
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GL_UNSIGNED_BYTE, nullptr ); |
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glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, aDimensions.x, aDimensions.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr ); |
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checkGlError( "creating framebuffer texture", __FILE__, __LINE__ ); |
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST ); |
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glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST ); |
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// Bind the texture to the specific attachment point, clear and rebind the screen
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bindFb( m_mainFbo ); |
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glFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, attachmentPoint, GL_TEXTURE_2D, textureTarget, |
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0 ); |
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glFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, attachmentPoint, GL_TEXTURE_2D, textureTarget, 0 ); |
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// Check the status, exit if the framebuffer can't be created
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GLenum status = glCheckFramebufferStatusEXT( GL_FRAMEBUFFER_EXT ); |
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@ -222,20 +218,17 @@ unsigned int OPENGL_COMPOSITOR::CreateBuffer( VECTOR2I aDimensions ) |
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throw std::runtime_error( "No images attached to the framebuffer." ); |
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case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT: |
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throw std::runtime_error( "The framebuffer does not have at least one " |
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"image attached to it." ); |
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throw std::runtime_error( "The framebuffer does not have at least one image attached to it." ); |
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case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT: |
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throw std::runtime_error( "The framebuffer read buffer is incomplete." ); |
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case GL_FRAMEBUFFER_UNSUPPORTED_EXT: |
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throw std::runtime_error( "The combination of internal formats of the attached " |
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"images violates an implementation-dependent set of " |
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"restrictions." ); |
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throw std::runtime_error( "The combination of internal formats of the attached images violates " |
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"an implementation-dependent set of restrictions." ); |
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case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT: |
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throw std::runtime_error( "GL_RENDERBUFFER_SAMPLES is not the same for " |
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"all attached renderbuffers" ); |
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throw std::runtime_error( "GL_RENDERBUFFER_SAMPLES is not the same for all attached renderbuffers" ); |
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case GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT: |
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throw std::runtime_error( "Framebuffer incomplete layer targets errors." ); |
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@ -263,15 +256,14 @@ unsigned int OPENGL_COMPOSITOR::CreateBuffer( VECTOR2I aDimensions ) |
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GLenum OPENGL_COMPOSITOR::GetBufferTexture( unsigned int aBufferHandle ) |
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{ |
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wxASSERT( aBufferHandle > 0 && aBufferHandle <= usedBuffers() ); |
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wxCHECK( aBufferHandle > 0 && aBufferHandle <= usedBuffers(), 0 ); |
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return m_buffers[aBufferHandle - 1].textureTarget; |
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} |
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void OPENGL_COMPOSITOR::SetBuffer( unsigned int aBufferHandle ) |
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{ |
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wxASSERT( m_initialized ); |
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wxASSERT( aBufferHandle <= usedBuffers() ); |
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wxCHECK( m_initialized && aBufferHandle <= usedBuffers(), /* void */ ); |
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// Either unbind the FBO for direct rendering, or bind the one with target textures
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bindFb( aBufferHandle == DIRECT_RENDERING ? DIRECT_RENDERING : m_mainFbo ); |
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@ -283,8 +275,7 @@ void OPENGL_COMPOSITOR::SetBuffer( unsigned int aBufferHandle ) |
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glDrawBuffer( m_buffers[m_curBuffer].attachmentPoint ); |
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checkGlError( "setting draw buffer", __FILE__, __LINE__ ); |
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glViewport( 0, 0, m_buffers[m_curBuffer].dimensions.x, |
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m_buffers[m_curBuffer].dimensions.y ); |
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glViewport( 0, 0, m_buffers[m_curBuffer].dimensions.x, m_buffers[m_curBuffer].dimensions.y ); |
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} |
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else |
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{ |
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@ -295,7 +286,7 @@ void OPENGL_COMPOSITOR::SetBuffer( unsigned int aBufferHandle ) |
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void OPENGL_COMPOSITOR::ClearBuffer( const COLOR4D& aColor ) |
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{ |
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wxASSERT( m_initialized ); |
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wxCHECK( m_initialized, /* void */ ); |
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glClearColor( aColor.r, aColor.g, aColor.b, m_curFbo == DIRECT_RENDERING ? 1.0f : 0.0f ); |
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glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT ); |
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@ -326,9 +317,8 @@ void OPENGL_COMPOSITOR::DrawBuffer( unsigned int aBufferHandle ) |
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void OPENGL_COMPOSITOR::DrawBuffer( unsigned int aSourceHandle, unsigned int aDestHandle ) |
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{ |
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wxASSERT( m_initialized ); |
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wxASSERT( aSourceHandle != 0 && aSourceHandle <= usedBuffers() ); |
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wxASSERT( aDestHandle <= usedBuffers() ); |
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wxCHECK( m_initialized && aSourceHandle != 0 && aSourceHandle <= usedBuffers(), /* void */ ); |
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wxCHECK( aDestHandle <= usedBuffers(), /* void */ ); |
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// Switch to the destination buffer and blit the scene
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SetBuffer( aDestHandle ); |
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@ -393,7 +383,7 @@ void OPENGL_COMPOSITOR::bindFb( unsigned int aFb ) |
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void OPENGL_COMPOSITOR::clean() |
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{ |
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wxASSERT( m_initialized ); |
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wxCHECK( m_initialized, /* void */ ); |
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bindFb( DIRECT_RENDERING ); |
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Jeff Young
4 months ago