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      1 /**********************************************************
      2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
      3  *
      4  * Permission is hereby granted, free of charge, to any person
      5  * obtaining a copy of this software and associated documentation
      6  * files (the "Software"), to deal in the Software without
      7  * restriction, including without limitation the rights to use, copy,
      8  * modify, merge, publish, distribute, sublicense, and/or sell copies
      9  * of the Software, and to permit persons to whom the Software is
     10  * furnished to do so, subject to the following conditions:
     11  *
     12  * The above copyright notice and this permission notice shall be
     13  * included in all copies or substantial portions of the Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     22  * SOFTWARE.
     23  *
     24  **********************************************************/
     25 
     26 #include "util/u_inlines.h"
     27 #include "util/u_math.h"
     28 #include "util/u_memory.h"
     29 #include "util/u_bitmask.h"
     30 #include "tgsi/tgsi_parse.h"
     31 #include "draw/draw_context.h"
     32 
     33 #include "svga_context.h"
     34 #include "svga_hw_reg.h"
     35 #include "svga_cmd.h"
     36 #include "svga_debug.h"
     37 #include "svga_shader.h"
     38 
     39 
     40 static void *
     41 svga_create_fs_state(struct pipe_context *pipe,
     42                      const struct pipe_shader_state *templ)
     43 {
     44    struct svga_context *svga = svga_context(pipe);
     45    struct svga_fragment_shader *fs;
     46 
     47    fs = CALLOC_STRUCT(svga_fragment_shader);
     48    if (!fs)
     49       return NULL;
     50 
     51    SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_CREATEFS);
     52 
     53    fs->base.tokens = tgsi_dup_tokens(templ->tokens);
     54 
     55    /* Collect basic info that we'll need later:
     56     */
     57    tgsi_scan_shader(fs->base.tokens, &fs->base.info);
     58 
     59    fs->base.id = svga->debug.shader_id++;
     60 
     61    fs->generic_inputs = svga_get_generic_inputs_mask(&fs->base.info);
     62 
     63    svga_remap_generics(fs->generic_inputs, fs->generic_remap_table);
     64 
     65    fs->draw_shader = draw_create_fragment_shader(svga->swtnl.draw, templ);
     66 
     67    SVGA_STATS_TIME_POP(svga_sws(svga));
     68    return fs;
     69 }
     70 
     71 
     72 static void
     73 svga_bind_fs_state(struct pipe_context *pipe, void *shader)
     74 {
     75    struct svga_fragment_shader *fs = (struct svga_fragment_shader *) shader;
     76    struct svga_context *svga = svga_context(pipe);
     77 
     78    svga->curr.fs = fs;
     79    svga->dirty |= SVGA_NEW_FS;
     80 }
     81 
     82 
     83 static void
     84 svga_delete_fs_state(struct pipe_context *pipe, void *shader)
     85 {
     86    struct svga_context *svga = svga_context(pipe);
     87    struct svga_fragment_shader *fs = (struct svga_fragment_shader *) shader;
     88    struct svga_shader_variant *variant, *tmp;
     89    enum pipe_error ret;
     90 
     91    svga_hwtnl_flush_retry(svga);
     92 
     93    assert(fs->base.parent == NULL);
     94 
     95    draw_delete_fragment_shader(svga->swtnl.draw, fs->draw_shader);
     96 
     97    for (variant = fs->base.variants; variant; variant = tmp) {
     98       tmp = variant->next;
     99 
    100       /* Check if deleting currently bound shader */
    101       if (variant == svga->state.hw_draw.fs) {
    102          ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_PS, NULL);
    103          if (ret != PIPE_OK) {
    104             svga_context_flush(svga, NULL);
    105             ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_PS, NULL);
    106             assert(ret == PIPE_OK);
    107          }
    108          svga->state.hw_draw.fs = NULL;
    109       }
    110 
    111       ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_PS, variant);
    112       if (ret != PIPE_OK) {
    113          svga_context_flush(svga, NULL);
    114          ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_PS, variant);
    115          assert(ret == PIPE_OK);
    116       }
    117    }
    118 
    119    FREE((void *)fs->base.tokens);
    120    FREE(fs);
    121 }
    122 
    123 
    124 void
    125 svga_init_fs_functions(struct svga_context *svga)
    126 {
    127    svga->pipe.create_fs_state = svga_create_fs_state;
    128    svga->pipe.bind_fs_state = svga_bind_fs_state;
    129    svga->pipe.delete_fs_state = svga_delete_fs_state;
    130 }
    131