src/gallium/drivers/svga/svga_pipe_fs.c

   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    fs->base.tokens = tgsi_dup_tokens(templ->tokens);
  52
  53    /* Collect basic info that we'll need later:
  54     */
  55    tgsi_scan_shader(fs->base.tokens, &fs->base.info);
  56
  57    fs->base.id = svga->debug.shader_id++;
  58
  59    fs->generic_inputs = svga_get_generic_inputs_mask(&fs->base.info);
  60
  61    svga_remap_generics(fs->generic_inputs, fs->generic_remap_table);
  62
  63    fs->draw_shader = draw_create_fragment_shader(svga->swtnl.draw, templ);
  64
  65    return fs;
  66 }
  67
  68
  69 static void
  70 svga_bind_fs_state(struct pipe_context *pipe, void *shader)
  71 {
  72    struct svga_fragment_shader *fs = (struct svga_fragment_shader *) shader;
  73    struct svga_context *svga = svga_context(pipe);
  74
  75    svga->curr.fs = fs;
  76    svga->dirty |= SVGA_NEW_FS;
  77 }
  78
  79
  80 static void
  81 svga_delete_fs_state(struct pipe_context *pipe, void *shader)
  82 {
  83    struct svga_context *svga = svga_context(pipe);
  84    struct svga_fragment_shader *fs = (struct svga_fragment_shader *) shader;
  85    struct svga_shader_variant *variant, *tmp;
  86    enum pipe_error ret;
  87
  88    svga_hwtnl_flush_retry(svga);
  89
  90    assert(fs->base.parent == NULL);
  91
  92    draw_delete_fragment_shader(svga->swtnl.draw, fs->draw_shader);
  93
  94    for (variant = fs->base.variants; variant; variant = tmp) {
  95       tmp = variant->next;
  96
  97       /* Check if deleting currently bound shader */
  98       if (variant == svga->state.hw_draw.fs) {
  99          ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_PS, NULL);
 100          if (ret != PIPE_OK) {
 101             svga_context_flush(svga, NULL);
 102             ret = svga_set_shader(svga, SVGA3D_SHADERTYPE_PS, NULL);
 103             assert(ret == PIPE_OK);
 104          }
 105          svga->state.hw_draw.fs = NULL;
 106       }
 107
 108       ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_PS, variant);
 109       if (ret != PIPE_OK) {
 110          svga_context_flush(svga, NULL);
 111          ret = svga_destroy_shader_variant(svga, SVGA3D_SHADERTYPE_PS, variant);
 112          assert(ret == PIPE_OK);
 113       }
 114    }
 115
 116    FREE((void *)fs->base.tokens);
 117    FREE(fs);
 118 }
 119
 120
 121 void
 122 svga_init_fs_functions(struct svga_context *svga)
 123 {
 124    svga->pipe.create_fs_state = svga_create_fs_state;
 125    svga->pipe.bind_fs_state = svga_bind_fs_state;
 126    svga->pipe.delete_fs_state = svga_delete_fs_state;
 127 }