src/gallium/state_trackers/python/p_texture.i

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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::face;
  46 %immutable st_surface::level;
  47 %immutable st_surface::zslice;
  48
  49 %newobject pipe_resource::get_surface;
  50
  51 /* Avoid naming conflict with p_inlines.h's pipe_buffer_read/write */
  52 %rename(read) read_;
  53 %rename(write) write_;
  54
  55 %extend pipe_resource {
  56
  57    ~pipe_resource() {
  58       struct pipe_resource *ptr = $self;
  59       pipe_resource_reference(&ptr, NULL);
  60    }
  61
  62    unsigned get_width(unsigned level=0) {
  63       return u_minify($self->width0, level);
  64    }
  65
  66    unsigned get_height(unsigned level=0) {
  67       return u_minify($self->height0, level);
  68    }
  69
  70    unsigned get_depth(unsigned level=0) {
  71       return u_minify($self->depth0, level);
  72    }
  73
  74    /** Get a surface which is a "view" into a texture */
  75    struct st_surface *
  76    get_surface(unsigned face=0, unsigned level=0, unsigned zslice=0)
  77    {
  78       struct st_surface *surface;
  79
  80       if(face >= ($self->target == PIPE_TEXTURE_CUBE ? 6U : 1U))
  81          SWIG_exception(SWIG_ValueError, "face out of bounds");
  82       if(level > $self->last_level)
  83          SWIG_exception(SWIG_ValueError, "level out of bounds");
  84       if(zslice >= u_minify($self->depth0, level))
  85          SWIG_exception(SWIG_ValueError, "zslice out of bounds");
  86
  87       surface = CALLOC_STRUCT(st_surface);
  88       if(!surface)
  89          return NULL;
  90
  91       pipe_resource_reference(&surface->texture, $self);
  92       surface->face = face;
  93       surface->level = level;
  94       surface->zslice = zslice;
  95
  96       return surface;
  97
  98    fail:
  99       return NULL;
 100    }
 101
 102    unsigned __len__(void)
 103    {
 104       assert($self->target == PIPE_BUFFER);
 105       assert(p_atomic_read(&$self->reference.count) > 0);
 106       return $self->width0;
 107    }
 108
 109 };
 110
 111 struct st_surface
 112 {
 113    %immutable;
 114
 115    struct pipe_resource *texture;
 116    unsigned face;
 117    unsigned level;
 118    unsigned zslice;
 119
 120 };
 121
 122 %extend st_surface {
 123
 124    %immutable;
 125
 126    unsigned format;
 127    unsigned width;
 128    unsigned height;
 129
 130    ~st_surface() {
 131       pipe_resource_reference(&$self->texture, NULL);
 132       FREE($self);
 133    }
 134
 135
 136 };
 137
 138 %{
 139    static enum pipe_format
 140    st_surface_format_get(struct st_surface *surface)
 141    {
 142       return surface->texture->format;
 143    }
 144
 145    static unsigned
 146    st_surface_width_get(struct st_surface *surface)
 147    {
 148       return u_minify(surface->texture->width0, surface->level);
 149    }
 150
 151    static unsigned
 152    st_surface_height_get(struct st_surface *surface)
 153    {
 154       return u_minify(surface->texture->height0, surface->level);
 155    }
 156 %}