src/gallium/drivers/nv50/nv50_program.h

   1 /*
   2  * Copyright 2010 Ben Skeggs
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #ifndef __NV50_PROG_H__
  24 #define __NV50_PROG_H__
  25
  26 #include "pipe/p_state.h"
  27 #include "tgsi/tgsi_scan.h"
  28 #include "nouveau/nouveau_class.h"
  29
  30 struct nv50_varying {
  31    uint8_t id; /* tgsi index */
  32    uint8_t hw; /* hw index, nv50 wants flat FP inputs last */
  33
  34    uint8_t mask   : 4;
  35    uint8_t linear : 1;
  36    uint8_t pad    : 3;
  37
  38    ubyte sn; /* semantic name */
  39    ubyte si; /* semantic index */
  40 };
  41
  42 struct nv50_program {
  43    struct pipe_shader_state pipe;
  44
  45    ubyte type;
  46    boolean translated;
  47
  48    struct nouveau_bo *bo;
  49    struct nouveau_stateobj *so;
  50
  51    uint32_t *code;
  52    unsigned code_size;
  53    unsigned code_start; /* offset inside bo */
  54    uint32_t *immd;
  55    unsigned immd_size;
  56    unsigned parm_size; /* size limit of uniform buffer */
  57
  58    ubyte max_gpr; /* REG_ALLOC_TEMP */
  59    ubyte max_out; /* REG_ALLOC_RESULT or FP_RESULT_COUNT */
  60
  61    ubyte in_nr;
  62    ubyte out_nr;
  63    struct nv50_varying in[16];
  64    struct nv50_varying out[16];
  65
  66    struct {
  67       uint32_t attrs[3]; /* VP_ATTR_EN_0,1 and VP_GP_BUILTIN_ATTR_EN */
  68       ubyte psiz;
  69       ubyte bfc[2];
  70       ubyte edgeflag;
  71       ubyte clpd;
  72       ubyte clpd_nr;
  73    } vp;
  74
  75    struct {
  76       uint32_t flags[2]; /* 0x19a8, 196c */
  77       uint32_t interp; /* 0x1988 */
  78       uint32_t colors; /* 0x1904 */
  79    } fp;
  80
  81    struct {
  82       ubyte primid; /* primitive id output register */
  83       uint8_t vert_count;
  84       uint8_t prim_type; /* point, line strip or tri strip */
  85    } gp;
  86
  87    void *fixups;
  88    unsigned num_fixups;
  89 };
  90
  91 #define NV50_INTERP_LINEAR   (1 << 0)
  92 #define NV50_INTERP_FLAT     (1 << 1)
  93 #define NV50_INTERP_CENTROID (1 << 2)
  94
  95 #define NV50_PROG_MAX_SUBROUTINES 8
  96
  97 /* analyze TGSI and see which TEMP[] are used as subroutine inputs/outputs */
  98 struct nv50_subroutine {
  99    int id;
 100    uint32_t argv[4][1]; /* 4 bitmasks, for each of xyzw, only allow 32 TEMPs */
 101    uint32_t retv[4][1];
 102 };
 103
 104 struct nv50_translation_info {
 105    struct nv50_program *p;
 106    unsigned inst_nr;
 107    ubyte input_file;
 108    ubyte output_file;
 109    ubyte input_map[PIPE_MAX_SHADER_INPUTS][4];
 110    ubyte output_map[PIPE_MAX_SHADER_OUTPUTS][4];
 111    ubyte interp_mode[PIPE_MAX_SHADER_INPUTS];
 112    int input_access[PIPE_MAX_SHADER_INPUTS][4];
 113    int output_access[PIPE_MAX_SHADER_OUTPUTS][4];
 114    boolean indirect_inputs;
 115    boolean indirect_outputs;
 116    struct tgsi_shader_info scan;
 117    uint32_t *immd32;
 118    unsigned immd32_nr;
 119    ubyte *immd32_ty;
 120    ubyte edgeflag_out;
 121    struct nv50_subroutine subr[NV50_PROG_MAX_SUBROUTINES];
 122    int subr_nr;
 123 };
 124
 125 int nv50_generate_code(struct nv50_translation_info *ti);
 126 boolean nv50_program_tx(struct nv50_program *p);
 127
 128 #endif /* __NV50_PROG_H__ */