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/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#ifndef INTEL_FBO_H
#define INTEL_FBO_H
#include <stdbool.h>
#include <assert.h>
#include "main/formats.h"
#include "intel_context.h"
#include "intel_screen.h"
struct intel_context;
struct intel_texture_image;
/**
* Intel renderbuffer, derived from gl_renderbuffer.
*/
struct intel_renderbuffer
{
struct gl_renderbuffer Base;
struct intel_region *region;
drm_intel_bo *map_bo;
void *map_buffer;
GLuint map_x, map_y, map_w, map_h;
GLbitfield map_mode;
/** Only used by depth renderbuffers for which HiZ is enabled. */
struct intel_region *hiz_region;
/**
* \name Packed depth/stencil unwrappers
*
* If the intel_context is using separate stencil and this renderbuffer has
* a packed depth/stencil format, then wrapped_depth and wrapped_stencil
* are the real renderbuffers.
*/
struct gl_renderbuffer *wrapped_depth;
struct gl_renderbuffer *wrapped_stencil;
/** \} */
GLuint draw_x, draw_y; /**< Offset of drawing within the region */
};
/**
* gl_renderbuffer is a base class which we subclass. The Class field
* is used for simple run-time type checking.
*/
#define INTEL_RB_CLASS 0x12345678
/**
* Return a gl_renderbuffer ptr casted to intel_renderbuffer.
* NULL will be returned if the rb isn't really an intel_renderbuffer.
* This is determined by checking the ClassID.
*/
static INLINE struct intel_renderbuffer *
intel_renderbuffer(struct gl_renderbuffer *rb)
{
struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
/*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
return irb;
}
else
return NULL;
}
/**
* \brief Return the framebuffer attachment specified by attIndex.
*
* If the framebuffer lacks the specified attachment, then return null.
*
* If the attached renderbuffer is a wrapper, then return wrapped
* renderbuffer.
*/
static INLINE struct intel_renderbuffer *
intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
{
struct gl_renderbuffer *rb;
struct intel_renderbuffer *irb;
assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
rb = fb->Attachment[attIndex].Renderbuffer;
if (!rb)
return NULL;
irb = intel_renderbuffer(rb);
if (!irb)
return NULL;
switch (attIndex) {
case BUFFER_DEPTH:
if (irb->wrapped_depth) {
irb = intel_renderbuffer(irb->wrapped_depth);
}
break;
case BUFFER_STENCIL:
if (irb->wrapped_stencil) {
irb = intel_renderbuffer(irb->wrapped_stencil);
}
break;
default:
break;
}
return irb;
}
/**
* If the framebuffer has a depth buffer attached, then return its HiZ region.
* The HiZ region may be null.
*/
static INLINE struct intel_region*
intel_framebuffer_get_hiz_region(struct gl_framebuffer *fb)
{
struct intel_renderbuffer *rb = NULL;
if (fb)
rb = intel_get_renderbuffer(fb, BUFFER_DEPTH);
if (rb)
return rb->hiz_region;
else
return NULL;
}
static INLINE bool
intel_framebuffer_has_hiz(struct gl_framebuffer *fb)
{
return intel_framebuffer_get_hiz_region(fb) != NULL;
}
extern struct intel_renderbuffer *
intel_create_renderbuffer(gl_format format);
struct gl_renderbuffer*
intel_create_wrapped_renderbuffer(struct gl_context * ctx,
int width, int height,
gl_format format);
GLboolean
intel_alloc_renderbuffer_storage(struct gl_context * ctx,
struct gl_renderbuffer *rb,
GLenum internalFormat,
GLuint width, GLuint height);
extern void
intel_fbo_init(struct intel_context *intel);
extern void
intel_flip_renderbuffers(struct gl_framebuffer *fb);
void
intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb,
struct intel_texture_image *intel_image,
int zoffset);
uint32_t
intel_renderbuffer_tile_offsets(struct intel_renderbuffer *irb,
uint32_t *tile_x,
uint32_t *tile_y);
static INLINE struct intel_region *
intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex)
{
struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, attIndex);
if (irb)
return irb->region;
else
return NULL;
}
#endif /* INTEL_FBO_H */
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