--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hostsupport/hostopengles20/src/GLES2/buffer.c	Wed Oct 06 17:59:01 2010 +0100
@@ -0,0 +1,222 @@
+/* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description:
+ *
+ */
+
+#include "common.h"
+#include "hgl.h"
+#include "context.h"
+
+DGLBuffer* DGLBuffer_create(GLuint name)
+{
+	DGLBuffer* buffer = malloc(sizeof(DGLBuffer));
+	if(buffer == NULL)
+	{
+		return NULL;
+	}
+
+	buffer->obj.name = name;
+	buffer->obj.next = NULL;
+
+	buffer->data = NULL;
+	buffer->size = 0;
+	buffer->usage = GL_STATIC_DRAW;
+
+	return buffer;
+}
+
+void DGLBuffer_destroy(DGLBuffer *buffer)
+{
+	DGLES2_ASSERT(buffer != NULL);
+	if(buffer->data != NULL)
+	{
+		free(buffer->data);
+		buffer->data = NULL;
+	}
+	free(buffer);
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glBindBuffer(GLenum target, GLuint buffer)
+{
+	DGLES2_ENTER();
+
+	DGLContext_getHostError(ctx);
+	
+	// The buffers are stored in both the wrapper and host.
+	ctx->hgl.BindBuffer(target, buffer);
+
+	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)
+	{
+		if(target == GL_ARRAY_BUFFER)
+		{
+			if(!DGLContext_bindBuffer(ctx, buffer))
+			{
+				DGLES2_ERROR(GL_OUT_OF_MEMORY);
+			}
+		}
+		else
+		{
+			DGLES2_ERROR_IF(target != GL_ELEMENT_ARRAY_BUFFER, GL_INVALID_ENUM);
+		}
+	}
+
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glBufferData(GLenum target, GLsizeiptr size, const void* data, GLenum usage)
+{
+	DGLES2_ENTER();
+	DGLES2_ERROR_IF(size < 0, GL_INVALID_VALUE);
+	DGLES2_ERROR_IF(usage != GL_STATIC_DRAW && usage != GL_DYNAMIC_DRAW && usage != GL_STREAM_DRAW, GL_INVALID_ENUM);
+	
+	DGLContext_getHostError(ctx);
+
+	// The buffers are stored in both the wrapper and host.
+	ctx->hgl.BufferData(target, size, data, usage);
+
+	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)
+	{
+		if(target == GL_ARRAY_BUFFER)
+		{
+			DGLBuffer* buffer;
+
+			DGLES2_ERROR_IF(ctx->buffer_binding == 0, GL_INVALID_OPERATION);
+			
+			buffer = DGLContext_findBuffer(ctx, ctx->buffer_binding);
+			DGLES2_ASSERT(buffer != NULL);
+			
+			if(buffer->data != NULL)
+			{
+				// Delete old data.
+				free(buffer->data);
+			}
+
+			buffer->data = malloc(size);
+			if(buffer->data == NULL)
+			{
+				DGLES2_ERROR(GL_OUT_OF_MEMORY);
+			}
+
+			if(data != NULL)
+			{
+				// Copy new data.
+				memcpy(buffer->data, data, size);
+			}
+
+			buffer->size = size;
+			buffer->usage = usage;
+		}
+		else
+		{
+			DGLES2_ERROR_IF(target != GL_ELEMENT_ARRAY_BUFFER, GL_INVALID_ENUM);
+		}
+	}
+
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glBufferSubData(GLenum target, GLintptr offset, GLsizeiptr size, const void* data)
+{
+	DGLES2_ENTER();
+	DGLES2_ERROR_IF(offset < 0, GL_INVALID_VALUE);
+	DGLES2_ERROR_IF(size < 0, GL_INVALID_VALUE);
+	
+	DGLContext_getHostError(ctx);
+
+	// The buffers are stored in both the wrapper and host.
+	ctx->hgl.BufferSubData(target, offset, size, data);
+
+	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)
+	{
+		if(target == GL_ARRAY_BUFFER)
+		{
+			DGLBuffer* buffer;
+
+			DGLES2_ERROR_IF(target != GL_ARRAY_BUFFER, GL_INVALID_ENUM);
+			DGLES2_ERROR_IF(ctx->buffer_binding == 0, GL_INVALID_OPERATION);
+
+			buffer = DGLContext_findBuffer(ctx, ctx->buffer_binding);
+			DGLES2_ASSERT(buffer != NULL);
+
+			memcpy((char*)buffer->data + offset, data, size);
+		}
+		else
+		{
+			DGLES2_ERROR_IF(target != GL_ELEMENT_ARRAY_BUFFER, GL_INVALID_ENUM);
+		}
+	}
+
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glDeleteBuffers(GLsizei n, const GLuint* buffers)
+{
+	DGLES2_ENTER();
+	DGLES2_ERROR_IF(n < 0, GL_INVALID_VALUE);
+	
+	DGLContext_getHostError(ctx);
+
+	// The buffers are stored in both the wrapper and host.
+	ctx->hgl.DeleteBuffers(n, buffers);
+
+	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)
+	{
+		int i;
+		for(i = 0; i < n; i++)
+		{
+			DGLContext_destroyBuffer(ctx, buffers[i]);
+		}
+	}
+
+	DGLES2_LEAVE();
+}
+
+
+GL_APICALL_BUILD void GL_APIENTRY glGenBuffers(GLsizei n, GLuint* buffers)
+{
+	DGLES2_ENTER();
+	DGLES2_ERROR_IF(n < 0, GL_INVALID_VALUE);
+
+	// The buffers are stored in both the wrapper and host.
+	// Let the host come up with free buffer names. 
+	ctx->hgl.GenBuffers(n, buffers);
+
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glGetBufferParameteriv(GLenum target, GLenum pname, GLint* params)
+{
+	DGLES2_ENTER();
+	DGLES2_ERROR_IF(pname != GL_BUFFER_USAGE && pname != GL_BUFFER_SIZE, GL_INVALID_ENUM);
+	ctx->hgl.GetBufferParameteriv(target, pname, params);
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD GLboolean GL_APIENTRY glIsBuffer(GLuint buffer)
+{
+	DGLES2_ENTER_RET(GL_FALSE);
+	DGLES2_LEAVE_RET(ctx->hgl.IsBuffer(buffer));
+}