src/gallium/drivers/freedreno/freedreno_program.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2014 Rob Clark <robclark@freedesktop.org>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rob Clark <robclark@freedesktop.org>
  27  */
  28
  29 #include "tgsi/tgsi_text.h"
  30
  31 #include "freedreno_program.h"
  32 #include "freedreno_context.h"
  33
  34 static void
  35 fd_fp_state_bind(struct pipe_context *pctx, void *hwcso)
  36 {
  37         struct fd_context *ctx = fd_context(pctx);
  38         ctx->prog.fp = hwcso;
  39         ctx->prog.dirty |= FD_SHADER_DIRTY_FP;
  40         ctx->dirty |= FD_DIRTY_PROG;
  41 }
  42
  43 static void
  44 fd_vp_state_bind(struct pipe_context *pctx, void *hwcso)
  45 {
  46         struct fd_context *ctx = fd_context(pctx);
  47         ctx->prog.vp = hwcso;
  48         ctx->prog.dirty |= FD_SHADER_DIRTY_VP;
  49         ctx->dirty |= FD_DIRTY_PROG;
  50 }
  51
  52 static const char *solid_fp =
  53         "FRAG                                        \n"
  54         "PROPERTY FS_COLOR0_WRITES_ALL_CBUFS 1       \n"
  55         "DCL CONST[0]                                \n"
  56         "DCL OUT[0], COLOR                           \n"
  57         "  0: MOV OUT[0], CONST[0]                   \n"
  58         "  1: END                                    \n";
  59
  60 static const char *solid_vp =
  61         "VERT                                        \n"
  62         "DCL IN[0]                                   \n"
  63         "DCL OUT[0], POSITION                        \n"
  64         "  0: MOV OUT[0], IN[0]                      \n"
  65         "  1: END                                    \n";
  66
  67 static const char *blit_fp =
  68         "FRAG                                        \n"
  69         "PROPERTY FS_COLOR0_WRITES_ALL_CBUFS 1       \n"
  70         "DCL IN[0], TEXCOORD                         \n"
  71         "DCL OUT[0], COLOR                           \n"
  72         "DCL SAMP[0]                                 \n"
  73         "  0: TEX OUT[0], IN[0], SAMP[0], 2D         \n"
  74         "  1: END                                    \n";
  75
  76 static const char *blit_vp =
  77         "VERT                                        \n"
  78         "DCL IN[0]                                   \n"
  79         "DCL IN[1]                                   \n"
  80         "DCL OUT[0], TEXCOORD                        \n"
  81         "DCL OUT[1], POSITION                        \n"
  82         "  0: MOV OUT[0], IN[0]                      \n"
  83         "  0: MOV OUT[1], IN[1]                      \n"
  84         "  1: END                                    \n";
  85
  86 static void * assemble_tgsi(struct pipe_context *pctx,
  87                 const char *src, bool frag)
  88 {
  89         struct tgsi_token toks[32];
  90         struct pipe_shader_state cso = {
  91                         .tokens = toks,
  92         };
  93
  94         tgsi_text_translate(src, toks, ARRAY_SIZE(toks));
  95
  96         if (frag)
  97                 return pctx->create_fs_state(pctx, &cso);
  98         else
  99                 return pctx->create_vs_state(pctx, &cso);
 100 }
 101
 102 void fd_prog_init(struct pipe_context *pctx)
 103 {
 104         struct fd_context *ctx = fd_context(pctx);
 105
 106         pctx->bind_fs_state = fd_fp_state_bind;
 107         pctx->bind_vs_state = fd_vp_state_bind;
 108
 109         // XXX for now, let a2xx keep it's own hand-rolled shaders
 110         // for solid and blit progs:
 111         if (ctx->screen->gpu_id < 300)
 112                 return;
 113
 114         ctx->solid_prog.fp = assemble_tgsi(pctx, solid_fp, true);
 115         ctx->solid_prog.vp = assemble_tgsi(pctx, solid_vp, false);
 116         ctx->blit_prog.fp = assemble_tgsi(pctx, blit_fp, true);
 117         ctx->blit_prog.vp = assemble_tgsi(pctx, blit_vp, false);
 118 }
 119
 120 void fd_prog_fini(struct pipe_context *pctx)
 121 {
 122         struct fd_context *ctx = fd_context(pctx);
 123
 124         pctx->delete_vs_state(pctx, ctx->solid_prog.vp);
 125         pctx->delete_fs_state(pctx, ctx->solid_prog.fp);
 126         pctx->delete_vs_state(pctx, ctx->blit_prog.vp);
 127         pctx->delete_fs_state(pctx, ctx->blit_prog.fp);
 128 }