src/gallium/drivers/softpipe/sp_fs_llvm.c

   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  *   Zack Rusin
  30  */
  31
  32 #include "sp_context.h"
  33 #include "sp_state.h"
  34 #include "sp_fs.h"
  35
  36
  37 #include "pipe/p_state.h"
  38 #include "pipe/p_defines.h"
  39 #include "util/u_memory.h"
  40 #include "pipe/p_inlines.h"
  41 #include "tgsi/tgsi_sse2.h"
  42
  43 #if 0
  44
  45 struct sp_llvm_fragment_shader {
  46    struct sp_fragment_shader base;
  47    struct gallivm_prog *llvm_prog;
  48 };
  49
  50 static void
  51 shade_quad_llvm(struct quad_stage *qs,
  52                 struct quad_header *quad)
  53 {
  54    struct quad_shade_stage *qss = quad_shade_stage(qs);
  55    struct softpipe_context *softpipe = qs->softpipe;
  56    float dests[4][16][4] ALIGN16_ATTRIB;
  57    float inputs[4][16][4] ALIGN16_ATTRIB;
  58    const float fx = (float) quad->x0;
  59    const float fy = (float) quad->y0;
  60    struct gallivm_prog *llvm = qss->llvm_prog;
  61
  62    inputs[0][0][0] = fx;
  63    inputs[1][0][0] = fx + 1.0f;
  64    inputs[2][0][0] = fx;
  65    inputs[3][0][0] = fx + 1.0f;
  66
  67    inputs[0][0][1] = fy;
  68    inputs[1][0][1] = fy;
  69    inputs[2][0][1] = fy + 1.0f;
  70    inputs[3][0][1] = fy + 1.0f;
  71
  72
  73    gallivm_prog_inputs_interpolate(llvm, inputs, quad->coef);
  74
  75 #if DLLVM
  76    debug_printf("MASK = %d\n", quad->mask);
  77    for (int i = 0; i < 4; ++i) {
  78       for (int j = 0; j < 2; ++j) {
  79          debug_printf("IN(%d,%d) [%f %f %f %f]\n", i, j,
  80                 inputs[i][j][0], inputs[i][j][1], inputs[i][j][2], inputs[i][j][3]);
  81       }
  82    }
  83 #endif
  84
  85    quad->mask &=
  86       gallivm_fragment_shader_exec(llvm, fx, fy, dests, inputs,
  87                                    softpipe->mapped_constants[PIPE_SHADER_FRAGMENT],
  88                                    qss->samplers);
  89 #if DLLVM
  90    debug_printf("OUT LLVM = 1[%f %f %f %f], 2[%f %f %f %f]\n",
  91           dests[0][0][0], dests[0][0][1], dests[0][0][2], dests[0][0][3],
  92           dests[0][1][0], dests[0][1][1], dests[0][1][2], dests[0][1][3]);
  93 #endif
  94
  95    /* store result color */
  96    if (qss->colorOutSlot >= 0) {
  97       unsigned i;
  98       /* XXX need to handle multiple color outputs someday */
  99       allvmrt(qss->stage.softpipe->fs->info.output_semantic_name[qss->colorOutSlot]
 100              == TGSI_SEMANTIC_COLOR);
 101       for (i = 0; i < QUAD_SIZE; ++i) {
 102          quad->outputs.color[0][0][i] = dests[i][qss->colorOutSlot][0];
 103          quad->outputs.color[0][1][i] = dests[i][qss->colorOutSlot][1];
 104          quad->outputs.color[0][2][i] = dests[i][qss->colorOutSlot][2];
 105          quad->outputs.color[0][3][i] = dests[i][qss->colorOutSlot][3];
 106       }
 107    }
 108 #if DLLVM
 109    for (int i = 0; i < QUAD_SIZE; ++i) {
 110       debug_printf("QLLVM%d(%d) [%f, %f, %f, %f]\n", i, qss->colorOutSlot,
 111              quad->outputs.color[0][0][i],
 112              quad->outputs.color[0][1][i],
 113              quad->outputs.color[0][2][i],
 114              quad->outputs.color[0][3][i]);
 115    }
 116 #endif
 117
 118    /* store result Z */
 119    if (qss->depthOutSlot >= 0) {
 120       /* output[slot] is new Z */
 121       uint i;
 122       for (i = 0; i < 4; i++) {
 123          quad->outputs.depth[i] = dests[i][0][2];
 124       }
 125    }
 126    else {
 127       /* copy input Z (which was interpolated by the executor) to output Z */
 128       uint i;
 129       for (i = 0; i < 4; i++) {
 130          quad->outputs.depth[i] = inputs[i][0][2];
 131       }
 132    }
 133 #if DLLVM
 134    debug_printf("D [%f, %f, %f, %f] mask = %d\n",
 135              quad->outputs.depth[0],
 136              quad->outputs.depth[1],
 137              quad->outputs.depth[2],
 138              quad->outputs.depth[3], quad->mask);
 139 #endif
 140
 141    /* shader may cull fragments */
 142    if( quad->mask ) {
 143       qs->next->run( qs->next, quad );
 144    }
 145 }
 146
 147
 148 unsigned
 149 run_llvm_fs( const struct sp_fragment_shader *base,
 150              struct foo *machine )
 151 {
 152 }
 153
 154
 155 void
 156 delete_llvm_fs( struct sp_fragment_shader *base )
 157 {
 158    FREE(base);
 159 }
 160
 161
 162 struct sp_fragment_shader *
 163 softpipe_create_fs_llvm(struct softpipe_context *softpipe,
 164                        const struct pipe_shader_state *templ)
 165 {
 166    struct sp_llvm_fragment_shader *shader = NULL;
 167
 168    /* LLVM fragment shaders currently disabled:
 169     */
 170    state = CALLOC_STRUCT(sp_llvm_shader_state);
 171    if (!state)
 172       return NULL;
 173
 174    state->llvm_prog = 0;
 175
 176    if (!gallivm_global_cpu_engine()) {
 177       gallivm_cpu_engine_create(state->llvm_prog);
 178    }
 179    else
 180       gallivm_cpu_jit_compile(gallivm_global_cpu_engine(), state->llvm_prog);
 181
 182    if (shader) {
 183       shader->base.run = run_llvm_fs;
 184       shader->base.delete = delete_llvm_fs;
 185    }
 186
 187    return shader;
 188 }
 189
 190
 191 #else
 192
 193 struct sp_fragment_shader *
 194 softpipe_create_fs_llvm(struct softpipe_context *softpipe,
 195                        const struct pipe_shader_state *templ)
 196 {
 197    return NULL;
 198 }
 199
 200 #endif