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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2007 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. /* Authors:
  29.  *  Brian Paul
  30.  */
  31.  
  32. #include "util/u_inlines.h"
  33. #include "util/u_memory.h"
  34.  
  35. #include "draw/draw_context.h"
  36.  
  37. #include "lp_context.h"
  38. #include "lp_screen.h"
  39. #include "lp_state.h"
  40. #include "lp_debug.h"
  41. #include "state_tracker/sw_winsys.h"
  42.  
  43.  
  44. static void *
  45. llvmpipe_create_sampler_state(struct pipe_context *pipe,
  46.                               const struct pipe_sampler_state *sampler)
  47. {
  48.    struct pipe_sampler_state *state = mem_dup(sampler, sizeof *sampler);
  49.  
  50.    if (LP_PERF & PERF_NO_MIP_LINEAR) {
  51.       if (state->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
  52.          state->min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
  53.    }
  54.  
  55.    if (LP_PERF & PERF_NO_MIPMAPS)
  56.       state->min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
  57.  
  58.    if (LP_PERF & PERF_NO_LINEAR) {
  59.       state->mag_img_filter = PIPE_TEX_FILTER_NEAREST;
  60.       state->min_img_filter = PIPE_TEX_FILTER_NEAREST;
  61.    }
  62.  
  63.    return state;
  64. }
  65.  
  66.  
  67. static void
  68. llvmpipe_bind_sampler_states(struct pipe_context *pipe,
  69.                              unsigned shader,
  70.                              unsigned start,
  71.                              unsigned num,
  72.                              void **samplers)
  73. {
  74.    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  75.    unsigned i;
  76.  
  77.    assert(shader < PIPE_SHADER_TYPES);
  78.    assert(start + num <= Elements(llvmpipe->samplers[shader]));
  79.  
  80.    /* Check for no-op */
  81.    if (start + num <= llvmpipe->num_samplers[shader] &&
  82.        !memcmp(llvmpipe->samplers[shader] + start, samplers,
  83.                num * sizeof(void *))) {
  84.       return;
  85.    }
  86.  
  87.    draw_flush(llvmpipe->draw);
  88.  
  89.    /* set the new samplers */
  90.    for (i = 0; i < num; i++) {
  91.       llvmpipe->samplers[shader][start + i] = samplers[i];
  92.    }
  93.  
  94.    /* find highest non-null samplers[] entry */
  95.    {
  96.       unsigned j = MAX2(llvmpipe->num_samplers[shader], start + num);
  97.       while (j > 0 && llvmpipe->samplers[shader][j - 1] == NULL)
  98.          j--;
  99.       llvmpipe->num_samplers[shader] = j;
  100.    }
  101.  
  102.    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
  103.       draw_set_samplers(llvmpipe->draw,
  104.                         shader,
  105.                         llvmpipe->samplers[shader],
  106.                         llvmpipe->num_samplers[shader]);
  107.    }
  108.  
  109.    llvmpipe->dirty |= LP_NEW_SAMPLER;
  110. }
  111.  
  112.  
  113. static void
  114. llvmpipe_bind_fragment_sampler_states(struct pipe_context *pipe,
  115.                                       unsigned num, void **samplers)
  116. {
  117.    llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_FRAGMENT, 0, num, samplers);
  118. }
  119.  
  120.  
  121. static void
  122. llvmpipe_bind_vertex_sampler_states(struct pipe_context *pipe,
  123.                                     unsigned num, void **samplers)
  124. {
  125.    llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_VERTEX, 0, num, samplers);
  126. }
  127.  
  128.  
  129. static void
  130. llvmpipe_bind_geometry_sampler_states(struct pipe_context *pipe,
  131.                                       unsigned num, void **samplers)
  132. {
  133.    llvmpipe_bind_sampler_states(pipe, PIPE_SHADER_GEOMETRY, 0, num, samplers);
  134. }
  135.  
  136. static void
  137. llvmpipe_set_sampler_views(struct pipe_context *pipe,
  138.                            unsigned shader,
  139.                            unsigned start,
  140.                            unsigned num,
  141.                            struct pipe_sampler_view **views)
  142. {
  143.    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  144.    uint i;
  145.  
  146.    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
  147.  
  148.    assert(shader < PIPE_SHADER_TYPES);
  149.    assert(start + num <= Elements(llvmpipe->sampler_views[shader]));
  150.  
  151.    /* Check for no-op */
  152.    if (start + num <= llvmpipe->num_sampler_views[shader] &&
  153.        !memcmp(llvmpipe->sampler_views[shader] + start, views,
  154.                num * sizeof(struct pipe_sampler_view *))) {
  155.       return;
  156.    }
  157.  
  158.    draw_flush(llvmpipe->draw);
  159.  
  160.    /* set the new sampler views */
  161.    for (i = 0; i < num; i++) {
  162.       pipe_sampler_view_reference(&llvmpipe->sampler_views[shader][start + i],
  163.                                   views[i]);
  164.    }
  165.  
  166.    /* find highest non-null sampler_views[] entry */
  167.    {
  168.       unsigned j = MAX2(llvmpipe->num_sampler_views[shader], start + num);
  169.       while (j > 0 && llvmpipe->sampler_views[shader][j - 1] == NULL)
  170.          j--;
  171.       llvmpipe->num_sampler_views[shader] = j;
  172.    }
  173.  
  174.    if (shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY) {
  175.       draw_set_sampler_views(llvmpipe->draw,
  176.                              shader,
  177.                              llvmpipe->sampler_views[shader],
  178.                              llvmpipe->num_sampler_views[shader]);
  179.    }
  180.  
  181.    llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
  182. }
  183.  
  184.  
  185. static void
  186. llvmpipe_set_fragment_sampler_views(struct pipe_context *pipe,
  187.                                     unsigned num,
  188.                                     struct pipe_sampler_view **views)
  189. {
  190.    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0, num, views);
  191. }
  192.  
  193.  
  194. static void
  195. llvmpipe_set_vertex_sampler_views(struct pipe_context *pipe,
  196.                                   unsigned num,
  197.                                   struct pipe_sampler_view **views)
  198. {
  199.    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_VERTEX, 0, num, views);
  200. }
  201.  
  202.  
  203. static void
  204. llvmpipe_set_geometry_sampler_views(struct pipe_context *pipe,
  205.                                     unsigned num,
  206.                                     struct pipe_sampler_view **views)
  207. {
  208.    llvmpipe_set_sampler_views(pipe, PIPE_SHADER_GEOMETRY, 0, num, views);
  209. }
  210.  
  211. static struct pipe_sampler_view *
  212. llvmpipe_create_sampler_view(struct pipe_context *pipe,
  213.                             struct pipe_resource *texture,
  214.                             const struct pipe_sampler_view *templ)
  215. {
  216.    struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
  217.    /*
  218.     * XXX we REALLY want to see the correct bind flag here but the OpenGL
  219.     * state tracker can't guarantee that at least for texture buffer objects.
  220.     */
  221.    if (!(texture->bind & PIPE_BIND_SAMPLER_VIEW))
  222.       debug_printf("Illegal sampler view creation without bind flag\n");
  223.  
  224.    if (view) {
  225.       *view = *templ;
  226.       view->reference.count = 1;
  227.       view->texture = NULL;
  228.       pipe_resource_reference(&view->texture, texture);
  229.       view->context = pipe;
  230.    }
  231.  
  232.    return view;
  233. }
  234.  
  235.  
  236. static void
  237. llvmpipe_sampler_view_destroy(struct pipe_context *pipe,
  238.                               struct pipe_sampler_view *view)
  239. {
  240.    pipe_resource_reference(&view->texture, NULL);
  241.    FREE(view);
  242. }
  243.  
  244.  
  245. static void
  246. llvmpipe_delete_sampler_state(struct pipe_context *pipe,
  247.                               void *sampler)
  248. {
  249.    FREE( sampler );
  250. }
  251.  
  252.  
  253. static void
  254. prepare_shader_sampling(
  255.    struct llvmpipe_context *lp,
  256.    unsigned num,
  257.    struct pipe_sampler_view **views,
  258.    unsigned shader_type,
  259.    struct pipe_resource *mapped_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS])
  260. {
  261.  
  262.    unsigned i;
  263.    uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
  264.    uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
  265.    uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
  266.    const void *addr;
  267.  
  268.    assert(num <= PIPE_MAX_SHADER_SAMPLER_VIEWS);
  269.    if (!num)
  270.       return;
  271.  
  272.    for (i = 0; i < PIPE_MAX_SHADER_SAMPLER_VIEWS; i++) {
  273.       struct pipe_sampler_view *view = i < num ? views[i] : NULL;
  274.  
  275.       if (view) {
  276.          struct pipe_resource *tex = view->texture;
  277.          struct llvmpipe_resource *lp_tex = llvmpipe_resource(tex);
  278.          unsigned width0 = tex->width0;
  279.          unsigned num_layers = tex->depth0;
  280.          unsigned first_level = 0;
  281.          unsigned last_level = 0;
  282.  
  283.          /* We're referencing the texture's internal data, so save a
  284.           * reference to it.
  285.           */
  286.          pipe_resource_reference(&mapped_tex[i], tex);
  287.  
  288.          if (!lp_tex->dt) {
  289.             /* regular texture - setup array of mipmap level offsets */
  290.             struct pipe_resource *res = view->texture;
  291.             int j;
  292.             void *mip_ptr;
  293.  
  294.             if (llvmpipe_resource_is_texture(res)) {
  295.                first_level = view->u.tex.first_level;
  296.                last_level = view->u.tex.last_level;
  297.                assert(first_level <= last_level);
  298.                assert(last_level <= res->last_level);
  299.  
  300.                /* must trigger allocation first before we can get base ptr */
  301.                /* XXX this may fail due to OOM ? */
  302.                mip_ptr = llvmpipe_get_texture_image_all(lp_tex, view->u.tex.first_level,
  303.                                                         LP_TEX_USAGE_READ);
  304.                addr = lp_tex->linear_img.data;
  305.  
  306.                for (j = first_level; j <= last_level; j++) {
  307.                   mip_ptr = llvmpipe_get_texture_image_all(lp_tex, j,
  308.                                                            LP_TEX_USAGE_READ);
  309.                   mip_offsets[j] = (uint8_t *)mip_ptr - (uint8_t *)addr;
  310.                   /*
  311.                    * could get mip offset directly but need call above to
  312.                    * invoke tiled->linear conversion.
  313.                    */
  314.                   assert(lp_tex->linear_mip_offsets[j] == mip_offsets[j]);
  315.                   row_stride[j] = lp_tex->row_stride[j];
  316.                   img_stride[j] = lp_tex->img_stride[j];
  317.                }
  318.                if (res->target == PIPE_TEXTURE_1D_ARRAY ||
  319.                    res->target == PIPE_TEXTURE_2D_ARRAY) {
  320.                   num_layers = view->u.tex.last_layer - view->u.tex.first_layer + 1;
  321.                   for (j = first_level; j <= last_level; j++) {
  322.                      mip_offsets[j] += view->u.tex.first_layer *
  323.                                        lp_tex->img_stride[j];
  324.                   }
  325.                   assert(view->u.tex.first_layer <= view->u.tex.last_layer);
  326.                   assert(view->u.tex.last_layer < res->array_size);
  327.                }
  328.             }
  329.             else {
  330.                unsigned view_blocksize = util_format_get_blocksize(view->format);
  331.                mip_ptr = lp_tex->data;
  332.                addr = mip_ptr;
  333.                /* probably don't really need to fill that out */
  334.                mip_offsets[0] = 0;
  335.                row_stride[0] = 0;
  336.                row_stride[0] = 0;
  337.  
  338.                /* everything specified in number of elements here. */
  339.                width0 = view->u.buf.last_element - view->u.buf.first_element + 1;
  340.                addr = (uint8_t *)addr + view->u.buf.first_element *
  341.                                view_blocksize;
  342.                assert(view->u.buf.first_element <= view->u.buf.last_element);
  343.                assert(view->u.buf.last_element * view_blocksize < res->width0);
  344.             }
  345.          }
  346.          else {
  347.             /* display target texture/surface */
  348.             /*
  349.              * XXX: Where should this be unmapped?
  350.              */
  351.             struct llvmpipe_screen *screen = llvmpipe_screen(tex->screen);
  352.             struct sw_winsys *winsys = screen->winsys;
  353.             addr = winsys->displaytarget_map(winsys, lp_tex->dt,
  354.                                                 PIPE_TRANSFER_READ);
  355.             row_stride[0] = lp_tex->row_stride[0];
  356.             img_stride[0] = lp_tex->img_stride[0];
  357.             mip_offsets[0] = 0;
  358.             assert(addr);
  359.          }
  360.          draw_set_mapped_texture(lp->draw,
  361.                                  shader_type,
  362.                                  i,
  363.                                  width0, tex->height0, num_layers,
  364.                                  first_level, last_level,
  365.                                  addr,
  366.                                  row_stride, img_stride, mip_offsets);
  367.       }
  368.    }
  369. }
  370.                        
  371.  
  372. /**
  373.  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
  374.  */
  375. void
  376. llvmpipe_prepare_vertex_sampling(struct llvmpipe_context *lp,
  377.                                  unsigned num,
  378.                                  struct pipe_sampler_view **views)
  379. {
  380.    prepare_shader_sampling(lp, num, views, PIPE_SHADER_VERTEX,
  381.                            lp->mapped_vs_tex);
  382. }
  383.  
  384. void
  385. llvmpipe_cleanup_vertex_sampling(struct llvmpipe_context *ctx)
  386. {
  387.    unsigned i;
  388.    for (i = 0; i < Elements(ctx->mapped_vs_tex); i++) {
  389.       pipe_resource_reference(&ctx->mapped_vs_tex[i], NULL);
  390.    }
  391. }
  392.  
  393.  
  394. /**
  395.  * Called during state validation when LP_NEW_SAMPLER_VIEW is set.
  396.  */
  397. void
  398. llvmpipe_prepare_geometry_sampling(struct llvmpipe_context *lp,
  399.                                    unsigned num,
  400.                                    struct pipe_sampler_view **views)
  401. {
  402.    prepare_shader_sampling(lp, num, views, PIPE_SHADER_GEOMETRY,
  403.                            lp->mapped_gs_tex);
  404. }
  405.  
  406. void
  407. llvmpipe_cleanup_geometry_sampling(struct llvmpipe_context *ctx)
  408. {
  409.    unsigned i;
  410.    for (i = 0; i < Elements(ctx->mapped_gs_tex); i++) {
  411.       pipe_resource_reference(&ctx->mapped_gs_tex[i], NULL);
  412.    }
  413. }
  414.  
  415. void
  416. llvmpipe_init_sampler_funcs(struct llvmpipe_context *llvmpipe)
  417. {
  418.    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
  419.  
  420.    llvmpipe->pipe.bind_fragment_sampler_states  = llvmpipe_bind_fragment_sampler_states;
  421.    llvmpipe->pipe.bind_vertex_sampler_states  = llvmpipe_bind_vertex_sampler_states;
  422.    llvmpipe->pipe.bind_geometry_sampler_states  = llvmpipe_bind_geometry_sampler_states;
  423.    llvmpipe->pipe.set_fragment_sampler_views = llvmpipe_set_fragment_sampler_views;
  424.    llvmpipe->pipe.set_vertex_sampler_views = llvmpipe_set_vertex_sampler_views;
  425.    llvmpipe->pipe.set_geometry_sampler_views = llvmpipe_set_geometry_sampler_views;
  426.    llvmpipe->pipe.create_sampler_view = llvmpipe_create_sampler_view;
  427.    llvmpipe->pipe.sampler_view_destroy = llvmpipe_sampler_view_destroy;
  428.    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
  429. }
  430.