mirror of
https://github.com/love2d/love.git
synced 2026-08-16 16:20:42 +02:00
Alex Szpakowski
1f9d98263d
Allows buffers created with love.graphics.newBuffer to only allocate VRAM data. Previously they had a copy of their contents in RAM. Also makes it easier to implement Buffers in other graphics APIs and to implement more types of Buffers in the future.
87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/**
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* Copyright (c) 2006-2020 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#pragma once
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// LOVE
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#include "common/config.h"
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#include "common/Range.h"
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#include "graphics/Buffer.h"
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#include "graphics/Volatile.h"
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// OpenGL
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#include "OpenGL.h"
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namespace love
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{
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namespace graphics
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{
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class Graphics;
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namespace opengl
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{
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class Buffer final : public love::graphics::Buffer, public Volatile
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{
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public:
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Buffer(love::graphics::Graphics *gfx, const Settings &settings, const std::vector<DataDeclaration> &format, const void *data, size_t size, size_t arraylength);
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virtual ~Buffer();
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// Implements Volatile.
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bool loadVolatile() override;
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void unloadVolatile() override;
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void *map(MapType map, size_t offset, size_t size) override;
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void unmap(size_t usedoffset, size_t usedsize) override;
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void fill(size_t offset, size_t size, const void *data) override;
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ptrdiff_t getHandle() const override { return buffer; };
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ptrdiff_t getTexelBufferHandle() const override { return texture; };
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private:
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bool load(const void *initialdata);
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void unmapStatic(size_t offset, size_t size);
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void unmapStream();
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BufferType mapType = BUFFERTYPE_VERTEX;
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GLenum target = 0;
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// The buffer object identifier. Assigned by OpenGL.
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GLuint buffer = 0;
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// Used for Texel Buffer types.
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GLuint texture = 0;
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// A pointer to mapped memory.
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char *memoryMap = nullptr;
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bool ownsMemoryMap = false;
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Range mappedRange;
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}; // Buffer
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} // opengl
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} // graphics
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} // love
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