src/gallium/state_trackers/python/p_texture.i

   1  /**************************************************************************
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   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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  27
  28 /**
  29  * @file
  30  * SWIG interface definion for Gallium types.
  31  *
  32  * @author Jose Fonseca <jrfonseca@tungstengraphics.com>
  33  */
  34
  35
  36 %nodefaultctor pipe_resource;
  37 %nodefaultctor st_surface;
  38
  39 %nodefaultdtor pipe_resource;
  40 %nodefaultdtor st_surface;
  41
  42 %ignore pipe_resource::screen;
  43
  44 %immutable st_surface::texture;
  45 %immutable st_surface::level;
  46 %immutable st_surface::layer;
  47
  48 %newobject pipe_resource::get_surface;
  49
  50 /* Avoid naming conflict with p_inlines.h's pipe_buffer_read/write */
  51 %rename(read) read_;
  52 %rename(write) write_;
  53
  54 %extend pipe_resource {
  55
  56    ~pipe_resource() {
  57       struct pipe_resource *ptr = $self;
  58       pipe_resource_reference(&ptr, NULL);
  59    }
  60
  61    unsigned get_width(unsigned level=0) {
  62       return u_minify($self->width0, level);
  63    }
  64
  65    unsigned get_height(unsigned level=0) {
  66       return u_minify($self->height0, level);
  67    }
  68
  69    unsigned get_depth(unsigned level=0) {
  70       return u_minify($self->depth0, level);
  71    }
  72
  73    /** Get a surface which is a "view" into a texture */
  74    struct st_surface *
  75    get_surface(unsigned level=0, unsigned layer=0)
  76    {
  77       struct st_surface *surface;
  78
  79       if(level > $self->last_level)
  80          SWIG_exception(SWIG_ValueError, "level out of bounds");
  81       if(layer >= ($self->target == PIPE_TEXTURE_3D ?
  82                          u_minify($self->depth0, level) : $self->depth0))
  83          SWIG_exception(SWIG_ValueError, "layer out of bounds");
  84
  85       surface = CALLOC_STRUCT(st_surface);
  86       if(!surface)
  87          return NULL;
  88
  89       pipe_resource_reference(&surface->texture, $self);
  90       surface->level = level;
  91       surface->layer = layer;
  92
  93       return surface;
  94
  95    fail:
  96       return NULL;
  97    }
  98
  99    unsigned __len__(void)
 100    {
 101       assert($self->target == PIPE_BUFFER);
 102       assert(p_atomic_read(&$self->reference.count) > 0);
 103       return $self->width0;
 104    }
 105
 106 };
 107
 108 struct st_surface
 109 {
 110    %immutable;
 111
 112    struct pipe_resource *texture;
 113    unsigned level;
 114    unsigned layer;
 115
 116 };
 117
 118 %extend st_surface {
 119
 120    %immutable;
 121
 122    unsigned format;
 123    unsigned width;
 124    unsigned height;
 125
 126    ~st_surface() {
 127       pipe_resource_reference(&$self->texture, NULL);
 128       FREE($self);
 129    }
 130
 131
 132 };
 133
 134 %{
 135    static enum pipe_format
 136    st_surface_format_get(struct st_surface *surface)
 137    {
 138       return surface->texture->format;
 139    }
 140
 141    static unsigned
 142    st_surface_width_get(struct st_surface *surface)
 143    {
 144       return u_minify(surface->texture->width0, surface->level);
 145    }
 146
 147    static unsigned
 148    st_surface_height_get(struct st_surface *surface)
 149    {
 150       return u_minify(surface->texture->height0, surface->level);
 151    }
 152 %}