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_winsys.h"
  30 #include "pipe/p_context.h"
  31 #include "pipe/p_shader_tokens.h"
  32 #include "pipe/p_inlines.h"
  33 #include "cso_cache/cso_context.h"
  34 #include "util/u_math.h"
  35 #include "util/u_memory.h"
  36 #include "util/u_simple_shaders.h"
  37 #include "trace/tr_screen.h"
  38 #include "trace/tr_context.h"
  39
  40 #include "st_device.h"
  41 #include "st_winsys.h"
  42
  43
  44 static void
  45 st_device_really_destroy(struct st_device *st_dev)
  46 {
  47    if(st_dev->screen)
  48       st_dev->screen->destroy(st_dev->screen);
  49
  50    FREE(st_dev);
  51 }
  52
  53
  54 void
  55 st_device_destroy(struct st_device *st_dev)
  56 {
  57    if(!--st_dev->refcount)
  58       st_device_really_destroy(st_dev);
  59 }
  60
  61
  62 static struct st_device *
  63 st_device_create_from_st_winsys(const struct st_winsys *st_ws)
  64 {
  65    struct st_device *st_dev;
  66
  67    if(!st_ws->screen_create ||
  68       !st_ws->context_create)
  69       return NULL;
  70
  71    st_dev = CALLOC_STRUCT(st_device);
  72    if(!st_dev)
  73       return NULL;
  74
  75    st_dev->refcount = 1;
  76    st_dev->st_ws = st_ws;
  77
  78    st_dev->real_screen = st_ws->screen_create();
  79    if(!st_dev->real_screen) {
  80       st_device_destroy(st_dev);
  81       return NULL;
  82    }
  83
  84    st_dev->screen = trace_screen_create(st_dev->real_screen);
  85    if(!st_dev->screen) {
  86       st_device_destroy(st_dev);
  87       return NULL;
  88    }
  89
  90    return st_dev;
  91 }
  92
  93
  94 struct st_device *
  95 st_device_create(boolean hardware) {
  96    if(hardware)
  97       return st_device_create_from_st_winsys(&st_hardpipe_winsys);
  98    else
  99       return st_device_create_from_st_winsys(&st_softpipe_winsys);
 100 }
 101
 102
 103 void
 104 st_context_destroy(struct st_context *st_ctx)
 105 {
 106    unsigned i;
 107
 108    if(st_ctx) {
 109       struct st_device *st_dev = st_ctx->st_dev;
 110
 111       if(st_ctx->cso) {
 112          cso_delete_vertex_shader(st_ctx->cso, st_ctx->vs);
 113          cso_delete_fragment_shader(st_ctx->cso, st_ctx->fs);
 114
 115          cso_destroy_context(st_ctx->cso);
 116       }
 117
 118       if(st_ctx->pipe)
 119          st_ctx->pipe->destroy(st_ctx->pipe);
 120
 121       for(i = 0; i < PIPE_MAX_SAMPLERS; ++i)
 122          pipe_texture_reference(&st_ctx->sampler_textures[i], NULL);
 123       pipe_texture_reference(&st_ctx->default_texture, NULL);
 124
 125       FREE(st_ctx);
 126
 127       if(!--st_dev->refcount)
 128          st_device_really_destroy(st_dev);
 129    }
 130 }
 131
 132
 133 struct st_context *
 134 st_context_create(struct st_device *st_dev)
 135 {
 136    struct st_context *st_ctx;
 137
 138    st_ctx = CALLOC_STRUCT(st_context);
 139    if(!st_ctx)
 140       return NULL;
 141
 142    st_ctx->st_dev = st_dev;
 143    ++st_dev->refcount;
 144
 145    st_ctx->real_pipe = st_dev->st_ws->context_create(st_dev->real_screen);
 146    if(!st_ctx->real_pipe) {
 147       st_context_destroy(st_ctx);
 148       return NULL;
 149    }
 150
 151    st_ctx->pipe = trace_context_create(st_dev->screen, st_ctx->real_pipe);
 152    if(!st_ctx->pipe) {
 153       st_context_destroy(st_ctx);
 154       return NULL;
 155    }
 156
 157    st_ctx->cso = cso_create_context(st_ctx->pipe);
 158    if(!st_ctx->cso) {
 159       st_context_destroy(st_ctx);
 160       return NULL;
 161    }
 162
 163    /* disabled blending/masking */
 164    {
 165       struct pipe_blend_state blend;
 166       memset(&blend, 0, sizeof(blend));
 167       blend.rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 168       blend.alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 169       blend.rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
 170       blend.alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
 171       blend.colormask = PIPE_MASK_RGBA;
 172       cso_set_blend(st_ctx->cso, &blend);
 173    }
 174
 175    /* no-op depth/stencil/alpha */
 176    {
 177       struct pipe_depth_stencil_alpha_state depthstencil;
 178       memset(&depthstencil, 0, sizeof(depthstencil));
 179       cso_set_depth_stencil_alpha(st_ctx->cso, &depthstencil);
 180    }
 181
 182    /* rasterizer */
 183    {
 184       struct pipe_rasterizer_state rasterizer;
 185       memset(&rasterizer, 0, sizeof(rasterizer));
 186       rasterizer.front_winding = PIPE_WINDING_CW;
 187       rasterizer.cull_mode = PIPE_WINDING_NONE;
 188       rasterizer.bypass_clipping = 1;
 189       /*rasterizer.bypass_vs = 1;*/
 190       cso_set_rasterizer(st_ctx->cso, &rasterizer);
 191    }
 192
 193    /* identity viewport */
 194    {
 195       struct pipe_viewport_state viewport;
 196       viewport.scale[0] = 1.0;
 197       viewport.scale[1] = 1.0;
 198       viewport.scale[2] = 1.0;
 199       viewport.scale[3] = 1.0;
 200       viewport.translate[0] = 0.0;
 201       viewport.translate[1] = 0.0;
 202       viewport.translate[2] = 0.0;
 203       viewport.translate[3] = 0.0;
 204       cso_set_viewport(st_ctx->cso, &viewport);
 205    }
 206
 207    /* samplers */
 208    {
 209       struct pipe_sampler_state sampler;
 210       unsigned i;
 211       memset(&sampler, 0, sizeof(sampler));
 212       sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 213       sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 214       sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
 215       sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
 216       sampler.min_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 217       sampler.mag_img_filter = PIPE_TEX_MIPFILTER_NEAREST;
 218       sampler.normalized_coords = 1;
 219       for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 220          cso_single_sampler(st_ctx->cso, i, &sampler);
 221       cso_single_sampler_done(st_ctx->cso);
 222    }
 223
 224    /* default textures */
 225    {
 226       struct pipe_screen *screen = st_dev->screen;
 227       struct pipe_texture templat;
 228       struct pipe_surface *surface;
 229       unsigned i;
 230
 231       memset( &templat, 0, sizeof( templat ) );
 232       templat.target = PIPE_TEXTURE_2D;
 233       templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
 234       templat.block.size = 4;
 235       templat.block.width = 1;
 236       templat.block.height = 1;
 237       templat.width[0] = 1;
 238       templat.height[0] = 1;
 239       templat.depth[0] = 1;
 240       templat.last_level = 0;
 241
 242       st_ctx->default_texture = screen->texture_create( screen, &templat );
 243       if(st_ctx->default_texture) {
 244          surface = screen->get_tex_surface( screen,
 245                                             st_ctx->default_texture, 0, 0, 0,
 246                                             PIPE_BUFFER_USAGE_CPU_WRITE );
 247          if(surface) {
 248             uint32_t *map;
 249             map = (uint32_t *) pipe_surface_map(surface, PIPE_BUFFER_USAGE_CPU_WRITE );
 250             if(map) {
 251                *map = 0x00000000;
 252                pipe_surface_unmap( surface );
 253             }
 254             pipe_surface_reference(&surface, NULL);
 255          }
 256       }
 257
 258       for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 259          pipe_texture_reference(&st_ctx->sampler_textures[i], st_ctx->default_texture);
 260
 261       cso_set_sampler_textures(st_ctx->cso, PIPE_MAX_SAMPLERS, st_ctx->sampler_textures);
 262    }
 263
 264    /* vertex shader */
 265    {
 266       struct pipe_shader_state vert_shader;
 267
 268       const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
 269                                       TGSI_SEMANTIC_GENERIC };
 270       const uint semantic_indexes[] = { 0, 0 };
 271       st_ctx->vs = util_make_vertex_passthrough_shader(st_ctx->pipe,
 272                                                        2,
 273                                                        semantic_names,
 274                                                        semantic_indexes,
 275                                                        &vert_shader);
 276       cso_set_vertex_shader_handle(st_ctx->cso, st_ctx->vs);
 277    }
 278
 279    /* fragment shader */
 280    {
 281       struct pipe_shader_state frag_shader;
 282       st_ctx->fs = util_make_fragment_passthrough_shader(st_ctx->pipe,
 283                                                          &frag_shader);
 284       cso_set_fragment_shader_handle(st_ctx->cso, st_ctx->fs);
 285    }
 286
 287    return st_ctx;
 288 }
 289
 290
 291 void
 292 st_buffer_destroy(struct st_buffer *st_buf)
 293 {
 294    if(st_buf) {
 295       struct pipe_screen *screen = st_buf->st_dev->screen;
 296       pipe_buffer_reference(screen, &st_buf->buffer, NULL);
 297       FREE(st_buf);
 298    }
 299 }
 300
 301
 302 struct st_buffer *
 303 st_buffer_create(struct st_device *st_dev,
 304                  unsigned alignment, unsigned usage, unsigned size)
 305 {
 306    struct pipe_screen *screen = st_dev->screen;
 307    struct st_buffer *st_buf;
 308
 309    st_buf = CALLOC_STRUCT(st_buffer);
 310    if(!st_buf)
 311       return NULL;
 312
 313    st_buf->st_dev = st_dev;
 314
 315    st_buf->buffer = pipe_buffer_create(screen, alignment, usage, size);
 316    if(!st_buf->buffer) {
 317       st_buffer_destroy(st_buf);
 318       return NULL;
 319    }
 320
 321    return st_buf;
 322 }
 323