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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  27
  28
  29 #ifndef ST_CB_FBO_H
  30 #define ST_CB_FBO_H
  31
  32 #include "main/compiler.h"
  33 #include "main/fbobject.h"
  34 #include "main/glheader.h"
  35 #include "main/mtypes.h"
  36
  37 #include "pipe/p_compiler.h"
  38 #include "pipe/p_format.h"
  39
  40 struct dd_function_table;
  41 struct pipe_context;
  42
  43 /**
  44  * Derived renderbuffer class.  Just need to add a pointer to the
  45  * pipe surface.
  46  */
  47 struct st_renderbuffer
  48 {
  49    struct gl_renderbuffer Base;
  50    struct pipe_resource *texture;
  51    struct pipe_surface *surface; /* temporary view into texture */
  52    GLboolean defined;        /**< defined contents? */
  53
  54    struct pipe_transfer *transfer; /**< only used when mapping the resource */
  55
  56    /**
  57     * Used only when hardware accumulation buffers are not supported.
  58     */
  59    boolean software;
  60    void *data;
  61
  62    bool use_readpix_cache;
  63
  64    /* Inputs from Driver.RenderTexture, don't use directly. */
  65    boolean is_rtt; /**< whether Driver.RenderTexture was called */
  66    unsigned rtt_face, rtt_slice;
  67    boolean rtt_layered; /**< whether glFramebufferTexture was called */
  68 };
  69
  70
  71 static inline struct st_renderbuffer *
  72 st_renderbuffer(struct gl_renderbuffer *rb)
  73 {
  74    return (struct st_renderbuffer *) rb;
  75 }
  76
  77
  78 /**
  79  * Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer.
  80  * Return NULL if the struct gl_framebuffer is a user-created framebuffer.
  81  * We'll only return non-null for window system framebuffers.
  82  * Note that this function may fail.
  83  */
  84 static inline struct st_framebuffer *
  85 st_ws_framebuffer(struct gl_framebuffer *fb)
  86 {
  87    /* FBO cannot be casted.  See st_new_framebuffer */
  88    if (fb && _mesa_is_winsys_fbo(fb))
  89       return (struct st_framebuffer *) fb;
  90    return NULL;
  91 }
  92
  93
  94 extern struct gl_renderbuffer *
  95 st_new_renderbuffer_fb(enum pipe_format format, int samples, boolean sw);
  96
  97 extern void
  98 st_update_renderbuffer_surface(struct st_context *st,
  99                                struct st_renderbuffer *strb);
 100
 101 extern void
 102 st_init_fbo_functions(struct dd_function_table *functions);
 103
 104 #endif /* ST_CB_FBO_H */