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79 lines
3.4 KiB
79 lines
3.4 KiB
/* |
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz> |
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This file is part of Magnum. |
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Magnum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License version 3 |
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only, as published by the Free Software Foundation. |
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Magnum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Lesser General Public License version 3 for more details. |
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*/ |
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#include "Framebuffer.h" |
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namespace Magnum { |
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Framebuffer::ClearMask Framebuffer::clearMask = Framebuffer::Clear::Color; |
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void Framebuffer::setFeature(Feature feature, bool enabled) { |
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/* Enable or disable the feature */ |
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enabled ? glEnable(static_cast<GLenum>(feature)) : glDisable(static_cast<GLenum>(feature)); |
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/* Update clear mask, if needed */ |
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ClearMask clearMaskChange; |
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if(feature == Feature::DepthTest) clearMaskChange = Clear::Depth; |
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else if(feature == Feature::StencilTest) clearMaskChange = Clear::Stencil; |
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else return; |
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enabled ? clearMask |= clearMaskChange : clearMask &= ~clearMaskChange; |
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} |
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void Framebuffer::setViewport(const Math::Vector2<GLint>& position, const Math::Vector2<GLsizei>& size) { |
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glViewport(position.x(), position.y(), size.x(), size.y()); |
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} |
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#ifndef MAGNUM_TARGET_GLES |
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void Framebuffer::mapDefaultForDraw(std::initializer_list<DefaultDrawAttachment> attachments) { |
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GLenum* _attachments = new GLenum[attachments.size()]; |
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for(auto it = attachments.begin(); it != attachments.end(); ++it) |
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_attachments[it-attachments.begin()] = static_cast<GLenum>(*it); |
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bindDefault(Target::Draw); |
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glDrawBuffers(attachments.size(), _attachments); |
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delete[] _attachments; |
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} |
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void Framebuffer::mapForDraw(std::initializer_list<int> colorAttachments) { |
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GLenum* attachments = new GLenum[colorAttachments.size()]; |
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for(auto it = colorAttachments.begin(); it != colorAttachments.end(); ++it) |
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attachments[it-colorAttachments.begin()] = *it + GL_COLOR_ATTACHMENT0; |
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bind(Target::Draw); |
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glDrawBuffers(colorAttachments.size(), attachments); |
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delete[] attachments; |
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} |
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#endif |
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void Framebuffer::read(const Math::Vector2<GLint>& offset, const Math::Vector2<GLsizei>& dimensions, AbstractImage::Components components, AbstractImage::ComponentType type, Image2D* image) { |
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char* data = new char[AbstractImage::pixelSize(components, type)*dimensions.product()]; |
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glReadPixels(offset.x(), offset.y(), dimensions.x(), dimensions.y(), static_cast<GLenum>(components), static_cast<GLenum>(type), data); |
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image->setData(dimensions, components, type, data); |
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} |
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#ifndef MAGNUM_TARGET_GLES |
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void Framebuffer::read(const Math::Vector2<GLint>& offset, const Math::Vector2<GLsizei>& dimensions, AbstractImage::Components components, AbstractImage::ComponentType type, BufferedImage2D* image, Buffer::Usage usage) { |
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/* If the buffer doesn't have sufficient size, resize it */ |
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/** @todo Explicitly reset also when buffer usage changes */ |
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if(image->dimensions() != dimensions || image->components() != components || image->type() != type) |
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image->setData(dimensions, components, type, nullptr, usage); |
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image->buffer()->bind(Buffer::Target::PixelPack); |
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glReadPixels(offset.x(), offset.y(), dimensions.x(), dimensions.y(), static_cast<GLenum>(components), static_cast<GLenum>(type), nullptr); |
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} |
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#endif |
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}
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