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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 "intel_screen.h"
struct intel_context;
/**
* Intel framebuffer, derived from gl_framebuffer.
*/
struct intel_framebuffer
{
struct gl_framebuffer Base;
struct intel_renderbuffer *color_rb[2];
/* VBI
*/
GLuint vbl_waited;
int64_t swap_ust;
int64_t swap_missed_ust;
GLuint swap_count;
GLuint swap_missed_count;
};
/**
* Intel renderbuffer, derived from gl_renderbuffer.
* Note: The PairedDepth and PairedStencil fields use renderbuffer IDs,
* not pointers because in some circumstances a deleted renderbuffer could
* result in a dangling pointer here.
*/
struct intel_renderbuffer
{
struct gl_renderbuffer Base;
struct intel_region *region;
GLuint pfPitch; /* possibly paged flipped pitch */
GLboolean RenderToTexture; /* RTT? */
GLuint PairedDepth; /**< only used if this is a depth renderbuffer */
GLuint PairedStencil; /**< only used if this is a stencil renderbuffer */
GLuint vbl_pending; /**< vblank sequence number of pending flip */
uint8_t *span_cache;
unsigned long span_cache_offset;
};
extern struct intel_renderbuffer *intel_renderbuffer(struct gl_renderbuffer
*rb);
extern void
intel_renderbuffer_set_region(struct intel_renderbuffer *irb,
struct intel_region *region);
extern struct intel_renderbuffer *
intel_create_renderbuffer(GLenum intFormat);
extern void intel_fbo_init(struct intel_context *intel);
/* XXX make inline or macro */
extern struct intel_renderbuffer *intel_get_renderbuffer(struct gl_framebuffer
*fb,
int attIndex);
extern void intel_flip_renderbuffers(struct intel_framebuffer *intel_fb);
/* XXX make inline or macro */
extern struct intel_region *intel_get_rb_region(struct gl_framebuffer *fb,
GLuint attIndex);
/**
* Are we currently rendering into a texture?
*/
static INLINE GLboolean
intel_rendering_to_texture(const GLcontext *ctx)
{
if (ctx->DrawBuffer->Name) {
/* User-created FBO */
const struct intel_renderbuffer *irb =
intel_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
return irb && irb->RenderToTexture;
}
else {
return GL_FALSE;
}
}
#endif /* INTEL_FBO_H */
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