src/gallium/state_trackers/python/st_device.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "pipe/p_util.h"
  30 #include "pipe/p_winsys.h"
  31 #include "pipe/p_context.h"
  32 #include "pipe/p_shader_tokens.h"
  33 #include "pipe/p_inlines.h"
  34 #include "cso_cache/cso_context.h"
  35 #include "util/u_simple_shaders.h"
  36 #include "trace/tr_screen.h"
  37 #include "trace/tr_context.h"
  38
  39 #include "st_device.h"
  40 #include "st_winsys.h"
  41
  42
  43 static void
  44 st_device_really_destroy(struct st_device *st_dev)
  45 {
  46    if(st_dev->screen)
  47       st_dev->screen->destroy(st_dev->screen);
  48
  49    FREE(st_dev);
  50 }
  51
  52
  53 void
  54 st_device_destroy(struct st_device *st_dev)
  55 {
  56    if(!--st_dev->refcount)
  57       st_device_really_destroy(st_dev);
  58 }
  59
  60
  61 static struct st_device *
  62 st_device_create_from_st_winsys(const struct st_winsys *st_ws)
  63 {
  64    struct st_device *st_dev;
  65
  66    if(!st_ws->screen_create ||
  67       !st_ws->context_create)
  68       return NULL;
  69
  70    st_dev = CALLOC_STRUCT(st_device);
  71    if(!st_dev)
  72       return NULL;
  73
  74    st_dev->refcount = 1;
  75    st_dev->st_ws = st_ws;
  76
  77    st_dev->real_screen = st_ws->screen_create();
  78    if(!st_dev->real_screen) {
  79       st_device_destroy(st_dev);
  80       return NULL;
  81    }
  82
  83    st_dev->screen = trace_screen_create(st_dev->real_screen);
  84    if(!st_dev->screen) {
  85       st_device_destroy(st_dev);
  86       return NULL;
  87    }
  88
  89    return st_dev;
  90 }
  91
  92
  93 struct st_device *
  94 st_device_create(boolean hardware) {
  95    if(hardware)
  96       return st_device_create_from_st_winsys(&st_hardpipe_winsys);
  97    else
  98       return st_device_create_from_st_winsys(&st_softpipe_winsys);
  99 }
 100
 101
 102 void
 103 st_context_destroy(struct st_context *st_ctx)
 104 {
 105    unsigned i;
 106
 107    if(st_ctx) {
 108       struct st_device *st_dev = st_ctx->st_dev;
 109
 110       if(st_ctx->cso) {
 111          cso_delete_vertex_shader(st_ctx->cso, st_ctx->vs);
 112          cso_delete_fragment_shader(st_ctx->cso, st_ctx->fs);
 113
 114          cso_destroy_context(st_ctx->cso);
 115       }
 116
 117       if(st_ctx->pipe)
 118          st_ctx->pipe->destroy(st_ctx->pipe);
 119
 120       for(i = 0; i < PIPE_MAX_SAMPLERS; ++i)
 121          pipe_texture_reference(&st_ctx->sampler_textures[i], NULL);
 122       pipe_texture_reference(&st_ctx->default_texture, NULL);
 123
 124       FREE(st_ctx);
 125
 126       if(!--st_dev->refcount)
 127          st_device_really_destroy(st_dev);
 128    }
 129 }
 130
 131
 132 struct st_context *
 133 st_context_create(struct st_device *st_dev)
 134 {
 135    struct st_context *st_ctx;
 136
 137    st_ctx = CALLOC_STRUCT(st_context);
 138    if(!st_ctx)
 139       return NULL;
 140
 141    st_ctx->st_dev = st_dev;
 142    ++st_dev->refcount;
 143
 144    st_ctx->real_pipe = st_dev->st_ws->context_create(st_dev->real_screen);
 145    if(!st_ctx->real_pipe) {
 146       st_context_destroy(st_ctx);
 147       return NULL;
 148    }
 149
 150    st_ctx->pipe = trace_context_create(st_dev->screen, st_ctx->real_pipe);
 151    if(!st_ctx->pipe) {
 152       st_context_destroy(st_ctx);
 153       return NULL;
 154    }
 155
 156    st_ctx->cso = cso_create_context(st_ctx->pipe);
 157    if(!st_ctx->cso) {
 158       st_context_destroy(st_ctx);
 159       return NULL;
 160    }
 161
 162    /* disabled blending/masking */
 163    {
 164       struct pipe_blend_state blend;
 165       memset(&blend, 0, sizeof(blend));
 166       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 167       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 168       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 169       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 170       blend.colormask = PIPE_MASK_RGBA;
 171       cso_set_blend(st_ctx->cso, &blend);
 172    }
 173
 174    /* no-op depth/stencil/alpha */
 175    {
 176       struct pipe_depth_stencil_alpha_state depthstencil;
 177       memset(&depthstencil, 0, sizeof(depthstencil));
 178       cso_set_depth_stencil_alpha(st_ctx->cso, &depthstencil);
 179    }
 180
 181    /* rasterizer */
 182    {
 183       struct pipe_rasterizer_state rasterizer;
 184       memset(&rasterizer, 0, sizeof(rasterizer));
 185       rasterizer.front_winding = PIPE_WINDING_CW;
 186       rasterizer.cull_mode = PIPE_WINDING_NONE;
 187       rasterizer.bypass_clipping = 1;
 188       /*rasterizer.bypass_vs = 1;*/
 189       cso_set_rasterizer(st_ctx->cso, &rasterizer);
 190    }
 191
 192    /* identity viewport */
 193    {
 194       struct pipe_viewport_state viewport;
 195       viewport.scale[0] = 1.0;
 196       viewport.scale[1] = 1.0;
 197       viewport.scale[2] = 1.0;
 198       viewport.scale[3] = 1.0;
 199       viewport.translate[0] = 0.0;
 200       viewport.translate[1] = 0.0;
 201       viewport.translate[2] = 0.0;
 202       viewport.translate[3] = 0.0;
 203       cso_set_viewport(st_ctx->cso, &viewport);
 204    }
 205
 206    /* samplers */
 207    {
 208       struct pipe_sampler_state sampler;
 209       unsigned i;
 210       memset(&sampler, 0, sizeof(sampler));
 211       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 212       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 213       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 214       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 215       sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 216       sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 217       sampler.normalized_coords = 1;
 218       for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 219          cso_single_sampler(st_ctx->cso, i, &sampler);
 220       cso_single_sampler_done(st_ctx->cso);
 221    }
 222
 223    /* default textures */
 224    {
 225       struct pipe_screen *screen = st_dev->screen;
 226       struct pipe_texture templat;
 227       struct pipe_surface *surface;
 228       unsigned i;
 229
 230       memset( &templat, 0, sizeof( templat ) );
 231       templat.target = PIPE_TEXTURE_2D;
 232       templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
 233       templat.block.size = 4;
 234       templat.block.width = 1;
 235       templat.block.height = 1;
 236       templat.width[0] = 1;
 237       templat.height[0] = 1;
 238       templat.depth[0] = 1;
 239       templat.last_level = 0;
 240
 241       st_ctx->default_texture = screen->texture_create( screen, &templat );
 242       if(st_ctx->default_texture) {
 243          surface = screen->get_tex_surface( screen,
 244                                             st_ctx->default_texture, 0, 0, 0,
 245                                             PIPE_BUFFER_USAGE_CPU_WRITE );
 246          if(surface) {
 247             uint32_t *map;
 248             map = (uint32_t *) pipe_surface_map(surface, PIPE_BUFFER_USAGE_CPU_WRITE );
 249             if(map) {
 250                *map = 0x00000000;
 251                pipe_surface_unmap( surface );
 252             }
 253             pipe_surface_reference(&surface, NULL);
 254          }
 255       }
 256
 257       for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 258          pipe_texture_reference(&st_ctx->sampler_textures[i], st_ctx->default_texture);
 259
 260       cso_set_sampler_textures(st_ctx->cso, PIPE_MAX_SAMPLERS, st_ctx->sampler_textures);
 261    }
 262
 263    /* vertex shader */
 264    {
 265       struct pipe_shader_state vert_shader;
 266
 267       const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
 268                                       TGSI_SEMANTIC_GENERIC };
 269       const uint semantic_indexes[] = { 0, 0 };
 270       st_ctx->vs = util_make_vertex_passthrough_shader(st_ctx->pipe,
 271                                                        2,
 272                                                        semantic_names,
 273                                                        semantic_indexes,
 274                                                        &vert_shader);
 275       cso_set_vertex_shader_handle(st_ctx->cso, st_ctx->vs);
 276    }
 277
 278    /* fragment shader */
 279    {
 280       struct pipe_shader_state frag_shader;
 281       st_ctx->fs = util_make_fragment_passthrough_shader(st_ctx->pipe,
 282                                                          &frag_shader);
 283       cso_set_fragment_shader_handle(st_ctx->cso, st_ctx->fs);
 284    }
 285
 286    return st_ctx;
 287 }
 288
 289
 290 void
 291 st_buffer_destroy(struct st_buffer *st_buf)
 292 {
 293    if(st_buf) {
 294       struct pipe_winsys *winsys = st_buf->st_dev->screen->winsys;
 295       pipe_buffer_reference(winsys, &st_buf->buffer, NULL);
 296       FREE(st_buf);
 297    }
 298 }
 299
 300
 301 struct st_buffer *
 302 st_buffer_create(struct st_device *st_dev,
 303                  unsigned alignment, unsigned usage, unsigned size)
 304 {
 305    struct pipe_winsys *winsys = st_dev->screen->winsys;
 306    struct st_buffer *st_buf;
 307
 308    st_buf = CALLOC_STRUCT(st_buffer);
 309    if(!st_buf)
 310       return NULL;
 311
 312    st_buf->st_dev = st_dev;
 313
 314    st_buf->buffer = winsys->buffer_create(winsys, alignment, usage, size);
 315    if(!st_buf->buffer) {
 316       st_buffer_destroy(st_buf);
 317       return NULL;
 318    }
 319
 320    return st_buf;
 321 }
 322