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99 lines
2.9 KiB
99 lines
2.9 KiB
//============ Copyright (c) Valve Corporation, All rights reserved. ============
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//
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// cglmprogram.h
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// GLMgr buffers (index / vertex)
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// ... maybe add PBO later as well
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//===============================================================================
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#ifndef CGLMBUFFER_H
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#define CGLMBUFFER_H
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#pragma once
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// ext links
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// http://www.opengl.org/registry/specs/ARB/vertex_buffer_object.txt
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//===============================================================================
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// tokens not in the SDK headers
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//#ifndef GL_DEPTH_STENCIL_ATTACHMENT_EXT
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// #define GL_DEPTH_STENCIL_ATTACHMENT_EXT 0x84F9
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//#endif
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//===============================================================================
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// forward declarations
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class GLMContext;
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enum EGLMBufferType
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{
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kGLMVertexBuffer,
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kGLMIndexBuffer,
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kGLMUniformBuffer, // for bindable uniform
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kGLMPixelBuffer, // for PBO
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kGLMNumBufferTypes
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};
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// pass this in "options" to constructor to make a dynamic buffer
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#define GLMBufferOptionDynamic 0x00000001
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struct GLMBuffLockParams
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{
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uint m_offset;
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uint m_size;
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bool m_nonblocking;
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bool m_discard;
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};
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class CGLMBuffer
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{
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public:
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void Lock( GLMBuffLockParams *params, char **addressOut );
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void Unlock( void );
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//protected:
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friend class GLMContext; // only GLMContext can make CGLMBuffer objects
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friend class GLMTester;
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friend class IDirect3D9;
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friend class IDirect3DDevice9;
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CGLMBuffer ( GLMContext *ctx, EGLMBufferType type, uint size, uint options );
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~CGLMBuffer ( );
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void SetModes ( bool asyncMap, bool explicitFlush, bool force = false );
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void FlushRange ( uint offset, uint size );
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GLMContext *m_ctx; // link back to parent context
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EGLMBufferType m_type;
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uint m_size;
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GLenum m_buffGLTarget; // GL_ARRAY_BUFFER_ARB / GL_ELEMENT_BUFFER_ARB
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GLuint m_name; // name of this program in the context
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uint m_revision; // bump anytime the size changes or buffer is orphaned
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bool m_enableAsyncMap; // mirror of the buffer state
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bool m_enableExplicitFlush; // mirror of the buffer state
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bool m_bound; // true if bound to context
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bool m_mapped; // is it currently mapped
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uint m_dirtyMinOffset; // when equal, range is empty
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uint m_dirtyMaxOffset;
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float *m_lastMappedAddress;
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// --------------------- pseudo-VBO support below here (explicitly for dynamic index buffers)
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bool m_pseudo; // true if the m_name is 0, and the backing is plain RAM
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// in pseudo mode, there is just one RAM buffer that acts as the backing.
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// expectation is that this mode would only be used for dynamic indices.
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// since indices have to be consumed (copied to command stream) prior to return from a drawing call,
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// there's no need to do any fencing or multibuffering. orphaning in particular becomes a no-op.
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char *m_pseudoBuf; // storage for pseudo buffer
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};
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#endif
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