/*
 * Direct Rendering Support for SMedia Glamo 336x/337x
 *
 * (c) 2009 Thomas White <taw@bitwiz.org.uk>
 * Roughly based on radeon_fbo.c (c) 2008 Red Hat Inc
 *
 * 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
 * THE AUTHORS 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.
 */


#include "main/imports.h"
#include "main/macros.h"
#include "main/mtypes.h"
#include "main/fbobject.h"
#include "main/framebuffer.h"
#include "main/renderbuffer.h"
#include "main/context.h"
#include "dri_util.h"

/* This comes from libdrm_glamo */
#include <glamo_bo.h>

#include "glamo_fbo.h"


static void glamo_delete_renderbuffer(struct gl_renderbuffer *rb)
{
   struct glamo_renderbuffer *grb = glamo_renderbuffer(rb);

   ASSERT(grb);

   if ( grb && grb->bo ) {
      glamo_bo_unref(grb->bo);
   }
   _mesa_free(grb);
}


static void *glamo_get_pointer(GLcontext *ctx, struct gl_renderbuffer *rb,
                               GLint x, GLint y)
{
   return NULL;   /* Can't be directly addressed */
}


/* Called for each hardware renderbuffer when a _window_ is resized.
 * Just update fields.
 * Not used for user-created renderbuffers!
 */
static GLboolean glamo_alloc_window_storage(GLcontext *ctx,
                                            struct gl_renderbuffer *rb,
                                            GLenum internalFormat,
                                            GLuint width, GLuint height)
{
   ASSERT(rb->Name == 0);
   rb->Width = width;
   rb->Height = height;
   rb->_ActualFormat = internalFormat;
   return GL_TRUE;
}


/* Create a buffer, such as a colour or depth buffer */
struct glamo_renderbuffer *glamo_create_renderbuffer(GLenum format,
                                              __DRIdrawable *driDrawPriv)
{
   struct glamo_renderbuffer *grb;

   grb = CALLOC_STRUCT(glamo_renderbuffer);
   if ( !grb ) return NULL;

   _mesa_init_renderbuffer(&grb->base, 0);
   grb->base.ClassID = GLAMO_RB_CLASS;

   switch (format) {
      case GL_RGB5:
         grb->base._ActualFormat = GL_RGB5;
         grb->base._BaseFormat = GL_RGBA;
         grb->base.RedBits = 5;
         grb->base.GreenBits = 6;
         grb->base.BlueBits = 5;
         grb->base.DataType = GL_UNSIGNED_BYTE;
         break;
      case GL_DEPTH_COMPONENT16:
         grb->base._ActualFormat = GL_DEPTH_COMPONENT16;
         grb->base._BaseFormat = GL_DEPTH_COMPONENT;
         grb->base.DepthBits = 16;
         grb->base.DataType = GL_UNSIGNED_SHORT;
         break;
      default:
         fprintf(stderr, "%s: Unknown format 0x%04x\n", __FUNCTION__, format);
         _mesa_delete_renderbuffer(&grb->base);
         return NULL;
   }

   grb->dPriv = driDrawPriv;
   grb->base.InternalFormat = format;

   grb->base.Delete = glamo_delete_renderbuffer;
   grb->base.AllocStorage = glamo_alloc_window_storage;
   grb->base.GetPointer = glamo_get_pointer;

   return grb;
}


void glamo_renderbuffer_set_bo(struct glamo_renderbuffer *grb,
                               struct glamo_bo *bo)
{
  struct glamo_bo *old;
  old = grb->bo;
  grb->bo = bo;
  glamo_bo_ref(bo);
  if ( old ) glamo_bo_unref(old);
}


/* kate: space-indent on; indent-width 3; mixedindent off; indent-mode cstyle; */