--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hostsupport/hostopengles20/src/fbo.c	Thu Oct 07 13:58:22 2010 +0100
@@ -0,0 +1,264 @@
+/* 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"
+
+DGLRenderbuffer* DGLRenderbuffer_create(GLuint name)
+{
+	DGLRenderbuffer* buffer = malloc(sizeof(DGLRenderbuffer));
+	if(buffer == NULL)
+	{
+		return NULL;
+	}
+
+	buffer->obj.name = name;
+	buffer->obj.next = NULL;
+
+	buffer->egl_image = NULL;
+
+	return buffer;
+}
+
+void DGLRenderbuffer_destroy(DGLRenderbuffer *buffer)
+{
+	DGLES2_ASSERT(buffer != NULL);
+	if(buffer->egl_image != NULL)
+	{
+		deglUnregisterImageTarget(buffer->egl_image, GL_RENDERBUFFER, buffer->obj.name);
+		buffer->egl_image = NULL;
+	}
+	free(buffer);
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glBindFramebuffer(GLenum target, GLuint framebuffer)
+{
+	DGLES2_ENTER();
+	DGLContext_getHostError(ctx);
+	ctx->hgl.BindFramebufferEXT(target, framebuffer);
+	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)
+	{
+		ctx->framebuffer_binding = framebuffer;
+	}
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glBindRenderbuffer(GLenum target, GLuint renderbuffer)
+{
+	DGLES2_ENTER();
+	DGLContext_getHostError(ctx);
+	ctx->hgl.BindRenderbufferEXT(target, renderbuffer);
+	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)
+	{
+		if(!DGLContext_bindRenderbuffer(ctx, renderbuffer))
+		{
+			DGLES2_ERROR(GL_OUT_OF_MEMORY);
+		}
+	}
+	DGLES2_LEAVE_NO_ERROR_CHECK();
+}
+
+GL_APICALL_BUILD GLenum GL_APIENTRY glCheckFramebufferStatus(GLenum target)
+{
+	DGLES2_ENTER_RET(GL_FALSE);
+	DGLES2_LEAVE_RET(ctx->hgl.CheckFramebufferStatusEXT(target));
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glDeleteFramebuffers(GLsizei n, const GLuint* framebuffers)
+{
+	DGLES2_ENTER();
+	DGLContext_getHostError(ctx);
+	ctx->hgl.DeleteFramebuffersEXT(n, framebuffers);
+	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)
+	{
+		// Unbind framebuffer when deleted.
+		int i;
+		for(i = 0; i < n; i++)
+		{
+			if(ctx->framebuffer_binding == framebuffers[i])
+			{
+				ctx->framebuffer_binding = 0;
+				break;
+			}
+		}
+	}
+	DGLES2_LEAVE_NO_ERROR_CHECK();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glDeleteRenderbuffers(GLsizei n, const GLuint* renderbuffers)
+{
+	DGLES2_ENTER();
+	DGLContext_getHostError(ctx);
+	ctx->hgl.DeleteRenderbuffersEXT(n, renderbuffers);
+	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)
+	{
+		int i;
+		for(i = 0; i < n; i++)
+		{
+			DGLContext_destroyRenderbuffer(ctx, renderbuffers[n]);
+		}
+	}
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glFramebufferRenderbuffer(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer)
+{
+	DGLES2_ENTER();
+	DGLES2_ERROR_IF(attachment != GL_COLOR_ATTACHMENT0 &&
+					attachment != GL_DEPTH_ATTACHMENT &&
+					attachment != GL_STENCIL_ATTACHMENT,
+					GL_INVALID_ENUM);
+	ctx->hgl.FramebufferRenderbufferEXT(target, attachment, renderbuffertarget, renderbuffer);
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glFramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level)
+{
+	DGLES2_ENTER();
+	DGLES2_ERROR_IF(attachment != GL_COLOR_ATTACHMENT0 &&
+					attachment != GL_DEPTH_ATTACHMENT &&
+					attachment != GL_STENCIL_ATTACHMENT,
+					GL_INVALID_ENUM);
+	ctx->hgl.FramebufferTexture2DEXT(target, attachment, textarget, texture, level);
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glGenFramebuffers(GLsizei n, GLuint* framebuffers)
+{
+	DGLES2_ENTER();
+	ctx->hgl.GenFramebuffersEXT(n, framebuffers);
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glGenRenderbuffers(GLsizei n, GLuint* renderbuffers)
+{
+	DGLES2_ENTER();
+	ctx->hgl.GenRenderbuffersEXT(n, renderbuffers);
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glGetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment, GLenum pname, GLint* params)
+{
+	DGLES2_ENTER();
+	DGLES2_ERROR_IF(attachment != GL_COLOR_ATTACHMENT0 &&
+					attachment != GL_DEPTH_ATTACHMENT &&
+					attachment != GL_STENCIL_ATTACHMENT,
+					GL_INVALID_ENUM);
+	DGLES2_ERROR_IF(pname != GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE &&
+					pname != GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME &&
+					pname != GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL &&
+					pname != GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE,
+					GL_INVALID_ENUM);
+	ctx->hgl.GetFramebufferAttachmentParameterivEXT(target, attachment, pname, params);
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glGetRenderbufferParameteriv(GLenum target, GLenum pname, GLint* params)
+{
+	DGLES2_ENTER();
+	ctx->hgl.GetRenderbufferParameterivEXT(target, pname, params);
+	DGLES2_LEAVE();
+}
+
+GL_APICALL_BUILD GLboolean GL_APIENTRY glIsFramebuffer(GLuint framebuffer)
+{
+	DGLES2_ENTER_RET(GL_FALSE);
+	ctx->hgl.IsFramebufferEXT(framebuffer);
+	DGLES2_LEAVE_RET(GL_FALSE);
+}
+
+GL_APICALL_BUILD GLboolean    GL_APIENTRY glIsRenderbuffer(GLuint renderbuffer)
+{
+	DGLES2_ENTER_RET(GL_FALSE);
+	ctx->hgl.IsRenderbufferEXT(renderbuffer);
+	DGLES2_LEAVE_RET(GL_FALSE);
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glRenderbufferStorage(GLenum target, GLenum internalformat, GLsizei width, GLsizei height)
+{
+	DGLES2_ENTER();
+	
+	switch(internalformat)
+	{
+		case GL_DEPTH_COMPONENT16:
+		case GL_RGBA4:
+		case GL_RGB5_A1:
+		case GL_STENCIL_INDEX8:
+			break;
+
+		case GL_RGB565:	// RGB565 is not supported in desktop GL.
+			internalformat = GL_RGB8;
+			break;
+
+		case GL_DEPTH_COMPONENT24_OES: // extension GL_OES_depth24
+			internalformat = GL_DEPTH_COMPONENT24;
+			break;
+
+		case GL_DEPTH_COMPONENT32_OES: // extension GL_OES_depth32
+			internalformat = GL_DEPTH_COMPONENT32;
+			break;
+
+		case GL_RGB8_OES: // extension GL_OES_rgb8_rgba8
+			internalformat = GL_RGB8;
+			break;
+
+		case GL_RGBA8_OES: // extension GL_OES_rgb8_rgba8
+			internalformat = GL_RGBA8;
+			break;
+	}
+	
+	DGLContext_getHostError(ctx);
+	ctx->hgl.RenderbufferStorageEXT(target, internalformat, width, height);
+	if(DGLContext_getHostError(ctx) == GL_NO_ERROR)
+	{
+		DGLRenderbuffer* buffer = DGLContext_findRenderbuffer(ctx, ctx->renderbuffer_binding);
+		DGLES2_ASSERT(buffer != NULL);
+		if(buffer->egl_image != NULL)
+		{
+			// Renderbuffer is respecified. It is no longer an EGLImage sibling.
+			deglUnregisterImageTarget(buffer->egl_image, GL_RENDERBUFFER, buffer->obj.name);
+			buffer->egl_image = NULL;
+		}
+	}
+
+	DGLES2_LEAVE_NO_ERROR_CHECK();
+}
+
+GL_APICALL_BUILD void GL_APIENTRY glEGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
+{
+	DGLES2_ENTER();
+	DGLES2_ERROR_IF(target != GL_RENDERBUFFER, GL_INVALID_ENUM);
+	DGLES2_ERROR_IF(image == NULL, GL_INVALID_OPERATION);
+	DGLContext_getHostError(ctx);
+	if(!DGLContext_specifyRenderbufferFromEGLImage(ctx, image))
+	{
+		DGLES2_ERROR(GL_INVALID_OPERATION);
+	}
+	DGLES2_LEAVE_NO_ERROR_CHECK();
+}
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