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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 "main/macros.h"
#include "intel_context.h"
#include "intel_mipmap_tree.h"
#include "intel_screen.h"
#ifdef __cplusplus
extern "C" {
#endif
struct intel_context;
struct intel_mipmap_tree;
struct intel_texture_image;
/**
* Intel renderbuffer, derived from gl_renderbuffer.
*/
struct intel_renderbuffer
{
struct swrast_renderbuffer Base;
struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
/**
* \name Miptree view
* \{
*
* Multiple renderbuffers may simultaneously wrap a single texture and each
* provide a different view into that texture. The fields below indicate
* which miptree slice is wrapped by this renderbuffer. The fields' values
* are consistent with the 'level' and 'layer' parameters of
* glFramebufferTextureLayer().
*
* For renderbuffers not created with glFramebufferTexture*(), mt_level and
* mt_layer are 0.
*/
unsigned int mt_level;
unsigned int mt_layer;
/** \} */
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.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;
assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
rb = fb->Attachment[attIndex].Renderbuffer;
if (!rb)
return NULL;
return intel_renderbuffer(rb);
}
static INLINE gl_format
intel_rb_format(const struct intel_renderbuffer *rb)
{
return rb->Base.Base.Format;
}
extern struct intel_renderbuffer *
intel_create_renderbuffer(gl_format format, unsigned num_samples);
struct intel_renderbuffer *
intel_create_private_renderbuffer(gl_format format, unsigned num_samples);
struct gl_renderbuffer*
intel_create_wrapped_renderbuffer(struct gl_context * ctx,
int width, int height,
gl_format format);
extern void
intel_fbo_init(struct intel_context *intel);
void
intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);
static inline uint32_t
intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer *irb,
uint32_t *tile_x,
uint32_t *tile_y)
{
return intel_miptree_get_tile_offsets(irb->mt, irb->mt_level, irb->mt_layer,
tile_x, tile_y);
}
void
intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer *irb);
bool
intel_renderbuffer_has_hiz(struct intel_renderbuffer *irb);
void
intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer *irb);
void
intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer *irb);
/**
* \brief Perform a HiZ resolve on the renderbuffer.
*
* It is safe to call this function on a renderbuffer without HiZ. In that
* case, the function is a no-op.
*
* \return false if no resolve was needed
*/
bool
intel_renderbuffer_resolve_hiz(struct intel_context *intel,
struct intel_renderbuffer *irb);
/**
* \brief Perform a depth resolve on the renderbuffer.
*
* It is safe to call this function on a renderbuffer without HiZ. In that
* case, the function is a no-op.
*
* \return false if no resolve was needed
*/
bool
intel_renderbuffer_resolve_depth(struct intel_context *intel,
struct intel_renderbuffer *irb);
void intel_renderbuffer_move_to_temp(struct intel_context *intel,
struct intel_renderbuffer *irb,
bool invalidate);
unsigned
intel_quantize_num_samples(struct intel_screen *intel, unsigned num_samples);
#ifdef __cplusplus
}
#endif
#endif /* INTEL_FBO_H */
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