src/mesa/state_tracker/st_cb_fbo.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   4  * All Rights Reserved.
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   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  27
  28
  29 #ifndef ST_CB_FBO_H
  30 #define ST_CB_FBO_H
  31
  32 #include "main/fbobject.h"
  33 #include "main/glheader.h"
  34 #include "main/mtypes.h"
  35
  36 #include "pipe/p_compiler.h"
  37 #include "pipe/p_format.h"
  38
  39 struct dd_function_table;
  40 struct pipe_context;
  41
  42 /**
  43  * Derived renderbuffer class.  Just need to add a pointer to the
  44  * pipe surface.
  45  */
  46 struct st_renderbuffer
  47 {
  48    struct gl_renderbuffer Base;
  49    struct pipe_resource *texture;
  50    /* This points to either "surface_linear" or "surface_srgb".
  51     * It doesn't hold the pipe_surface reference. The other two do.
  52     */
  53    struct pipe_surface *surface;
  54    struct pipe_surface *surface_linear;
  55    struct pipe_surface *surface_srgb;
  56    GLboolean defined;        /**< defined contents? */
  57
  58    struct pipe_transfer *transfer; /**< only used when mapping the resource */
  59
  60    /**
  61     * Used only when hardware accumulation buffers are not supported.
  62     */
  63    boolean software;
  64    void *data;
  65
  66    bool use_readpix_cache;
  67
  68    /* Inputs from Driver.RenderTexture, don't use directly. */
  69    boolean is_rtt; /**< whether Driver.RenderTexture was called */
  70    unsigned rtt_face, rtt_slice;
  71    boolean rtt_layered; /**< whether glFramebufferTexture was called */
  72    unsigned rtt_nr_samples; /**< from FramebufferTexture2DMultisampleEXT */
  73 };
  74
  75
  76 static inline struct st_renderbuffer *
  77 st_renderbuffer(struct gl_renderbuffer *rb)
  78 {
  79    return (struct st_renderbuffer *) rb;
  80 }
  81
  82 static inline struct pipe_resource *
  83 st_get_renderbuffer_resource(struct gl_renderbuffer *rb)
  84 {
  85    return st_renderbuffer(rb)->texture;
  86 }
  87
  88 /**
  89  * Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer.
  90  * Return NULL if the struct gl_framebuffer is a user-created framebuffer.
  91  * We'll only return non-null for window system framebuffers.
  92  * Note that this function may fail.
  93  */
  94 static inline struct st_framebuffer *
  95 st_ws_framebuffer(struct gl_framebuffer *fb)
  96 {
  97    /* FBO cannot be casted.  See st_new_framebuffer */
  98    if (fb && _mesa_is_winsys_fbo(fb) &&
  99        fb != _mesa_get_incomplete_framebuffer())
 100       return (struct st_framebuffer *) fb;
 101    return NULL;
 102 }
 103
 104
 105 extern struct gl_renderbuffer *
 106 st_new_renderbuffer_fb(enum pipe_format format, unsigned samples, boolean sw);
 107
 108 extern void
 109 st_update_renderbuffer_surface(struct st_context *st,
 110                                struct st_renderbuffer *strb);
 111
 112 extern void
 113 st_init_fbo_functions(struct dd_function_table *functions);
 114
 115 #endif /* ST_CB_FBO_H */