src/gallium/state_trackers/python/p_state.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 %module gallium;
  36
  37 %ignore winsys;
  38 %ignore pipe_vertex_buffer::buffer;
  39
  40 %include "pipe/p_compiler.h";
  41 %include "pipe/p_state.h";
  42
  43
  44 %array_class(struct pipe_stencil_state, StencilArray);
  45
  46
  47 %extend pipe_rt_blend_state
  48 {
  49    struct pipe_rt_blend_state *
  50    __getitem__(int index)
  51    {
  52       if(index < 0 || index >= PIPE_MAX_COLOR_BUFS)
  53          SWIG_exception(SWIG_ValueError, "index out of bounds");
  54       return $self + index;
  55    fail:
  56       return NULL;
  57    };
  58 };
  59
  60
  61 %extend pipe_blend_state
  62 {
  63    pipe_blend_state(void)
  64    {
  65       return CALLOC_STRUCT(pipe_blend_state);
  66    }
  67
  68    %cstring_input_binary(const char *STRING, unsigned LENGTH);
  69    pipe_blend_state(const char *STRING, unsigned LENGTH)
  70    {
  71       struct pipe_blend_state *state;
  72       state = CALLOC_STRUCT(pipe_blend_state);
  73       if (state) {
  74          LENGTH = MIN2(sizeof *state, LENGTH);
  75          memcpy(state, STRING, LENGTH);
  76       }
  77       return state;
  78    }
  79
  80    %cstring_output_allocate_size(char **STRING, int *LENGTH, os_free(*$1));
  81    void __str__(char **STRING, int *LENGTH)
  82    {
  83       struct os_stream *stream;
  84
  85       stream = os_str_stream_create(1);
  86       util_dump_blend_state(stream, $self);
  87
  88       *STRING = os_str_stream_get_and_close(stream);
  89       *LENGTH = strlen(*STRING);
  90    }
  91 };
  92
  93
  94 %extend pipe_framebuffer_state {
  95
  96    pipe_framebuffer_state(void) {
  97       return CALLOC_STRUCT(pipe_framebuffer_state);
  98    }
  99
 100    ~pipe_framebuffer_state() {
 101       unsigned index;
 102       for(index = 0; index < PIPE_MAX_COLOR_BUFS; ++index)
 103          pipe_surface_reference(&$self->cbufs[index], NULL);
 104       pipe_surface_reference(&$self->zsbuf, NULL);
 105       FREE($self);
 106    }
 107
 108    void
 109    set_cbuf(unsigned index, struct st_surface *surface)
 110    {
 111       struct pipe_surface *_surface = NULL;
 112
 113       if(index >= PIPE_MAX_COLOR_BUFS)
 114          SWIG_exception(SWIG_ValueError, "index out of bounds");
 115
 116       if(surface) {
 117          /* XXX need a context here */
 118          _surface = st_pipe_surface(NULL, surface, PIPE_BIND_RENDER_TARGET);
 119          if(!_surface)
 120             SWIG_exception(SWIG_ValueError, "couldn't acquire surface for writing");
 121       }
 122
 123       pipe_surface_reference(&$self->cbufs[index], _surface);
 124
 125    fail:
 126       return;
 127    }
 128
 129    void
 130    set_zsbuf(struct st_surface *surface)
 131    {
 132       struct pipe_surface *_surface = NULL;
 133
 134       if(surface) {
 135          /* XXX need a context here */
 136          _surface = st_pipe_surface(NULL, surface, PIPE_BIND_DEPTH_STENCIL);
 137          if(!_surface)
 138             SWIG_exception(SWIG_ValueError, "couldn't acquire surface for writing");
 139       }
 140
 141       pipe_surface_reference(&$self->zsbuf, _surface);
 142
 143    fail:
 144       return;
 145    }
 146
 147 };
 148
 149
 150 %extend pipe_shader_state {
 151
 152    pipe_shader_state(const char *text, unsigned num_tokens = 1024) {
 153       struct tgsi_token *tokens;
 154       struct pipe_shader_state *shader;
 155
 156       tokens = MALLOC(num_tokens * sizeof(struct tgsi_token));
 157       if(!tokens)
 158          goto error1;
 159
 160       if(tgsi_text_translate(text, tokens, num_tokens ) != TRUE)
 161          goto error2;
 162
 163       shader = CALLOC_STRUCT(pipe_shader_state);
 164       if(!shader)
 165          goto error3;
 166
 167       shader->tokens = tokens;
 168
 169       return shader;
 170
 171 error3:
 172 error2:
 173       FREE(tokens);
 174 error1:
 175       return NULL;
 176    }
 177
 178    ~pipe_shader_state() {
 179       FREE((void*)$self->tokens);
 180       FREE($self);
 181    }
 182
 183    void dump(unsigned flags = 0) {
 184       tgsi_dump($self->tokens, flags);
 185    }
 186 }