mirror of
https://github.com/ZDoom/raze-gles.git
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1b46a6fd9a
An empty buffer is a perfectly valid construct that may not be asserted upon. The 3D scene does not use indices so the buffer receives no data and remains empty. This made the softpoly renderer fail in debug builds. Performance issues aside it works fine now. Fixes #314
83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
#pragma once
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#include <stddef.h>
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#include <assert.h>
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class FRenderState;
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// The low level code needs to know which attributes exist.
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// OpenGL needs to change the state of all of them per buffer binding.
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// VAOs are mostly useless for this because they lump buffer and binding state together which the model code does not want.
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enum
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{
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VATTR_VERTEX,
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VATTR_TEXCOORD,
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VATTR_COLOR,
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VATTR_VERTEX2,
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VATTR_NORMAL,
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VATTR_NORMAL2,
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VATTR_MAX
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};
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enum EVertexAttributeFormat
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{
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VFmt_Float4,
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VFmt_Float3,
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VFmt_Float2,
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VFmt_Float,
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VFmt_Byte4,
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VFmt_Packed_A2R10G10B10,
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};
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struct FVertexBufferAttribute
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{
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int binding;
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int location;
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int format;
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int offset;
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};
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class IBuffer
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{
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protected:
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size_t buffersize = 0;
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void *map = nullptr;
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public:
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IBuffer() = default;
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IBuffer(const IBuffer &) = delete;
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IBuffer &operator=(const IBuffer &) = delete;
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virtual ~IBuffer() = default;
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virtual void SetData(size_t size, const void *data, bool staticdata = true) = 0;
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virtual void SetSubData(size_t offset, size_t size, const void *data) = 0;
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virtual void *Lock(unsigned int size) = 0;
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virtual void Unlock() = 0;
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virtual void Resize(size_t newsize) = 0;
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virtual void Map() {} // Only needed by old OpenGL but this needs to be in the interface.
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virtual void Unmap() {}
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void *Memory() { return map; }
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size_t Size() { return buffersize; }
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};
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class IVertexBuffer : virtual public IBuffer
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{
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public:
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virtual void SetFormat(int numBindingPoints, int numAttributes, size_t stride, const FVertexBufferAttribute *attrs) = 0;
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};
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// This merely exists to have a dedicated type for index buffers to inherit from.
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class IIndexBuffer : virtual public IBuffer
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{
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// Element size is fixed to 4, thanks to OpenGL requiring this info to be coded into the glDrawElements call.
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// This mostly prohibits a more flexible buffer setup but GZDoom doesn't use any other format anyway.
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// Ob Vulkam, element size is a buffer property and of no concern to the drawing functions (as it should be.)
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};
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class IDataBuffer : virtual public IBuffer
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{
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// Can be either uniform or shader storage buffer, depending on its needs.
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public:
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virtual void BindRange(FRenderState *state, size_t start, size_t length) = 0;
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};
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