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
  29 #define NV50_CAP_MAX_PROGRAM_TEMPS 64
  30
  31 struct nv50_varying {
  32    uint8_t id; /* tgsi index */
  33    uint8_t hw; /* hw index, nv50 wants flat FP inputs last */
  34
  35    uint8_t mask   : 4;
  36    uint8_t linear : 1;
  37    uint8_t pad    : 3;
  38
  39    ubyte sn; /* semantic name */
  40    ubyte si; /* semantic index */
  41 };
  42
  43 struct nv50_program {
  44    struct pipe_shader_state pipe;
  45
  46    ubyte type;
  47    boolean translated;
  48
  49    struct nouveau_bo *bo;
  50    struct nouveau_stateobj *so;
  51
  52    uint32_t *code;
  53    unsigned code_size;
  54    unsigned code_start; /* offset inside bo */
  55    uint32_t *immd;
  56    unsigned immd_size;
  57    unsigned parm_size; /* size limit of uniform buffer */
  58
  59    ubyte max_gpr; /* REG_ALLOC_TEMP */
  60    ubyte max_out; /* REG_ALLOC_RESULT or FP_RESULT_COUNT */
  61
  62    ubyte in_nr;
  63    ubyte out_nr;
  64    struct nv50_varying in[16];
  65    struct nv50_varying out[16];
  66
  67    struct {
  68       uint32_t attrs[3]; /* VP_ATTR_EN_0,1 and VP_GP_BUILTIN_ATTR_EN */
  69       ubyte psiz;
  70       ubyte bfc[2];
  71       ubyte edgeflag;
  72       ubyte clpd;
  73       ubyte clpd_nr;
  74    } vp;
  75
  76    struct {
  77       uint32_t flags[2]; /* 0x19a8, 196c */
  78       uint32_t interp; /* 0x1988 */
  79       uint32_t colors; /* 0x1904 */
  80    } fp;
  81
  82    struct {
  83       ubyte primid; /* primitive id output register */
  84       uint8_t vert_count;
  85       uint8_t prim_type; /* point, line strip or tri strip */
  86    } gp;
  87
  88    void *fixups;
  89    unsigned num_fixups;
  90 };
  91
  92 #define NV50_INTERP_LINEAR   (1 << 0)
  93 #define NV50_INTERP_FLAT     (1 << 1)
  94 #define NV50_INTERP_CENTROID (1 << 2)
  95
  96 /* analyze TGSI and see which TEMP[] are used as subroutine inputs/outputs */
  97 struct nv50_subroutine {
  98    unsigned id;
  99    unsigned pos;
 100    /* function inputs and outputs */
 101    uint32_t argv[NV50_CAP_MAX_PROGRAM_TEMPS][4];
 102    uint32_t retv[NV50_CAP_MAX_PROGRAM_TEMPS][4];
 103 };
 104
 105 struct nv50_translation_info {
 106    struct nv50_program *p;
 107    unsigned inst_nr;
 108    struct tgsi_full_instruction *insns;
 109    ubyte input_file;
 110    ubyte output_file;
 111    ubyte input_map[PIPE_MAX_SHADER_INPUTS][4];
 112    ubyte output_map[PIPE_MAX_SHADER_OUTPUTS][4];
 113    ubyte interp_mode[PIPE_MAX_SHADER_INPUTS];
 114    int input_access[PIPE_MAX_SHADER_INPUTS][4];
 115    int output_access[PIPE_MAX_SHADER_OUTPUTS][4];
 116    boolean indirect_inputs;
 117    boolean indirect_outputs;
 118    boolean store_to_memory;
 119    struct tgsi_shader_info scan;
 120    uint32_t *immd32;
 121    unsigned immd32_nr;
 122    ubyte *immd32_ty;
 123    ubyte edgeflag_out;
 124    struct nv50_subroutine *subr;
 125    unsigned subr_nr;
 126 };
 127
 128 int nv50_generate_code(struct nv50_translation_info *ti);
 129 boolean nv50_program_tx(struct nv50_program *p);
 130
 131 #endif /* __NV50_PROG_H__ */