llvertexbuffer.cpp

					required_mask |= required;

				}
			}

			if ((data_mask & required_mask) != required_mask)
			{
				llerrs << "Shader consumption mismatches data provision." << llendl;
			}
		}
	}

	if (useVBOs())
	{
		if (mGLArray)
		{
			bindGLArray();
			setup = FALSE; //do NOT perform pointer setup if using VAO
		}
		else
		{
			if (bindGLBuffer())
			{
				setup = TRUE;
			}
			if (bindGLIndices())
			{
				setup = TRUE;
			}
		}

		BOOL error = FALSE;
		if (gDebugGL && !mGLArray)
		{
			GLint buff;
			glGetIntegerv(GL_ARRAY_BUFFER_BINDING_ARB, &buff);
			if ((GLuint)buff != mGLBuffer)
			{
				if (gDebugSession)
				{
					error = TRUE;
					gFailLog << "Invalid GL vertex buffer bound: " << buff << std::endl;
				}
				else
				{
					llerrs << "Invalid GL vertex buffer bound: " << buff << llendl;
				}
			}

			if (mGLIndices)
			{
				glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, &buff);
				if ((GLuint)buff != mGLIndices)
				{
					if (gDebugSession)
					{
						error = TRUE;
						gFailLog << "Invalid GL index buffer bound: " << buff <<  std::endl;
					}
					else
					{
						llerrs << "Invalid GL index buffer bound: " << buff << llendl;
					}
				}
			}
		}

		
	}
	else
	{	
		if (sGLRenderArray)
		{
			glBindVertexArray(0);
			sGLRenderArray = 0;
		}

		if (mGLBuffer)
		{
			if (sVBOActive)
			{
				glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
				sBindCount++;
				sVBOActive = FALSE;
				setup = TRUE; // ... or a VBO is deactivated
			}
			if (sGLRenderBuffer != mGLBuffer)
			{
				sGLRenderBuffer = mGLBuffer;
				setup = TRUE; // ... or a client memory pointer changed
			}
		}
		if (mGLIndices)
		{
			if (sIBOActive)
			{
				glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
				sBindCount++;
				sIBOActive = FALSE;
			}
			
			sGLRenderIndices = mGLIndices;
		}
	}

	if (!mGLArray)
	{
		setupClientArrays(data_mask);
	}
			
	if (mGLBuffer)
	{
		if (data_mask && setup)
		{
			setupVertexBuffer(data_mask); // subclass specific setup (virtual function)
			sSetCount++;
		}
	}
}

// virtual (default)
void LLVertexBuffer::setupVertexBuffer(U32 data_mask)
{
	LLMemType mt2(LLMemType::MTYPE_VERTEX_SETUP_VERTEX_BUFFER);
	stop_glerror();
	U8* base = useVBOs() ? (U8*) mAlignedOffset : mMappedData;

	/*if ((data_mask & mTypeMask) != data_mask)
	{
		llerrs << "LLVertexBuffer::setupVertexBuffer missing required components for supplied data mask." << llendl;
	}*/

	if (LLGLSLShader::sNoFixedFunction)
	{
		if (data_mask & MAP_NORMAL)
		{
			S32 loc = TYPE_NORMAL;
			void* ptr = (void*)(base + mOffsets[TYPE_NORMAL]);
			glVertexAttribPointerARB(loc, 3, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_NORMAL], ptr);
		}
		if (data_mask & MAP_TEXCOORD3)
		{
			S32 loc = TYPE_TEXCOORD3;
			void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD3]);
			glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD3], ptr);
		}
		if (data_mask & MAP_TEXCOORD2)
		{
			S32 loc = TYPE_TEXCOORD2;
			void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD2]);
			glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD2], ptr);
		}
		if (data_mask & MAP_TEXCOORD1)
		{
			S32 loc = TYPE_TEXCOORD1;
			void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD1]);
			glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD1], ptr);
		}
		if (data_mask & MAP_BINORMAL)
		{
			S32 loc = TYPE_BINORMAL;
			void* ptr = (void*)(base + mOffsets[TYPE_BINORMAL]);
			glVertexAttribPointerARB(loc, 3,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_BINORMAL], ptr);
		}
		if (data_mask & MAP_TEXCOORD0)
		{
			S32 loc = TYPE_TEXCOORD0;
			void* ptr = (void*)(base + mOffsets[TYPE_TEXCOORD0]);
			glVertexAttribPointerARB(loc,2,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD0], ptr);
		}
		if (data_mask & MAP_COLOR)
		{
			S32 loc = TYPE_COLOR;
			void* ptr = (void*)(base + mOffsets[TYPE_COLOR]);
			glVertexAttribPointerARB(loc, 4, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_COLOR], ptr);
		}
		if (data_mask & MAP_EMISSIVE)
		{
			S32 loc = TYPE_EMISSIVE;
			void* ptr = (void*)(base + mOffsets[TYPE_EMISSIVE]);
			glVertexAttribPointerARB(loc, 1, GL_UNSIGNED_BYTE, GL_TRUE, LLVertexBuffer::sTypeSize[TYPE_EMISSIVE], ptr);
		}
		if (data_mask & MAP_WEIGHT)
		{
			S32 loc = TYPE_WEIGHT;
			void* ptr = (void*)(base + mOffsets[TYPE_WEIGHT]);
			glVertexAttribPointerARB(loc, 1, GL_FLOAT, FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT], ptr);
		}
		if (data_mask & MAP_WEIGHT4)
		{
			S32 loc = TYPE_WEIGHT4;
			void* ptr = (void*)(base+mOffsets[TYPE_WEIGHT4]);
			glVertexAttribPointerARB(loc, 4, GL_FLOAT, FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT4], ptr);
		}
		if (data_mask & MAP_CLOTHWEIGHT)
		{
			S32 loc = TYPE_CLOTHWEIGHT;
			void* ptr = (void*)(base + mOffsets[TYPE_CLOTHWEIGHT]);
			glVertexAttribPointerARB(loc, 4, GL_FLOAT, TRUE,  LLVertexBuffer::sTypeSize[TYPE_CLOTHWEIGHT], ptr);
		}
		if (data_mask & MAP_TEXTURE_INDEX)
		{
			S32 loc = TYPE_TEXTURE_INDEX;
			void *ptr = (void*) (base + mOffsets[TYPE_VERTEX] + 12);
			glVertexAttribPointerARB(loc, 1, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
		}
		if (data_mask & MAP_VERTEX)
		{
			S32 loc = TYPE_VERTEX;
			void* ptr = (void*)(base + mOffsets[TYPE_VERTEX]);
			glVertexAttribPointerARB(loc, 3,GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_VERTEX], (void*)(base + 0));
		}	
	}	
	else
	{
		if (data_mask & MAP_NORMAL)
		{
			glNormalPointer(GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_NORMAL], (void*)(base + mOffsets[TYPE_NORMAL]));
		}
		if (data_mask & MAP_TEXCOORD3)
		{
			glClientActiveTextureARB(GL_TEXTURE3_ARB);
			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD3], (void*)(base + mOffsets[TYPE_TEXCOORD3]));
			glClientActiveTextureARB(GL_TEXTURE0_ARB);
		}
		if (data_mask & MAP_TEXCOORD2)
		{
			glClientActiveTextureARB(GL_TEXTURE2_ARB);
			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD2], (void*)(base + mOffsets[TYPE_TEXCOORD2]));
			glClientActiveTextureARB(GL_TEXTURE0_ARB);
		}
		if (data_mask & MAP_TEXCOORD1)
		{
			glClientActiveTextureARB(GL_TEXTURE1_ARB);
			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD1], (void*)(base + mOffsets[TYPE_TEXCOORD1]));
			glClientActiveTextureARB(GL_TEXTURE0_ARB);
		}
		if (data_mask & MAP_BINORMAL)
		{
			glClientActiveTextureARB(GL_TEXTURE2_ARB);
			glTexCoordPointer(3,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_BINORMAL], (void*)(base + mOffsets[TYPE_BINORMAL]));
			glClientActiveTextureARB(GL_TEXTURE0_ARB);
		}
		if (data_mask & MAP_TEXCOORD0)
		{
			glTexCoordPointer(2,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_TEXCOORD0], (void*)(base + mOffsets[TYPE_TEXCOORD0]));
		}
		if (data_mask & MAP_COLOR)
		{
			glColorPointer(4, GL_UNSIGNED_BYTE, LLVertexBuffer::sTypeSize[TYPE_COLOR], (void*)(base + mOffsets[TYPE_COLOR]));
		}
		if (data_mask & MAP_VERTEX)
		{
			glVertexPointer(3,GL_FLOAT, LLVertexBuffer::sTypeSize[TYPE_VERTEX], (void*)(base + 0));
		}	
	}

	llglassertok();
}

LLVertexBuffer::MappedRegion::MappedRegion(S32 type, S32 index, S32 count)
: mType(type), mIndex(index), mCount(count)
{ 
	llassert(mType == LLVertexBuffer::TYPE_INDEX || 
			mType < LLVertexBuffer::TYPE_TEXTURE_INDEX);
}