src/gallium/drivers/nv50/codegen/nv50_ir_driver.h

   1 /*
   2  * Copyright 2011 Christoph Bumiller
   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_IR_DRIVER_H__
  24 #define __NV50_IR_DRIVER_H__
  25
  26 #include "pipe/p_shader_tokens.h"
  27
  28 #include "tgsi/tgsi_util.h"
  29 #include "tgsi/tgsi_parse.h"
  30 #include "tgsi/tgsi_scan.h"
  31
  32 /*
  33  * This struct constitutes linkage information in TGSI terminology.
  34  *
  35  * It is created by the code generator and handed to the pipe driver
  36  * for input/output slot assignment.
  37  */
  38 struct nv50_ir_varying
  39 {
  40    uint8_t slot[4]; /* native slots for xyzw (addresses in 32-bit words) */
  41
  42    unsigned mask     : 4; /* vec4 mask */
  43    unsigned linear   : 1; /* linearly interpolated if true (and not flat) */
  44    unsigned flat     : 1;
  45    unsigned centroid : 1;
  46    unsigned patch    : 1; /* patch constant value */
  47    unsigned regular  : 1; /* driver-specific meaning (e.g. input in sreg) */
  48    unsigned input    : 1; /* indicates direction of system values */
  49    unsigned oread    : 1; /* true if output is read from parallel TCP */
  50
  51    ubyte id; /* TGSI register index */
  52    ubyte sn; /* TGSI semantic name */
  53    ubyte si; /* TGSI semantic index */
  54 };
  55
  56 #define NV50_PROGRAM_IR_TGSI 0
  57 #define NV50_PROGRAM_IR_SM4  1
  58 #define NV50_PROGRAM_IR_GLSL 2
  59 #define NV50_PROGRAM_IR_LLVM 3
  60
  61 #ifdef DEBUG
  62 # define NV50_IR_DEBUG_BASIC     (1 << 0)
  63 # define NV50_IR_DEBUG_VERBOSE   (2 << 0)
  64 # define NV50_IR_DEBUG_REG_ALLOC (1 << 2)
  65 #else
  66 # define NV50_IR_DEBUG_BASIC     0
  67 # define NV50_IR_DEBUG_VERBOSE   0
  68 # define NV50_IR_DEBUG_REG_ALLOC 0
  69 #endif
  70
  71 #define NV50_SEMANTIC_CLIPDISTANCE  (TGSI_SEMANTIC_COUNT + 0)
  72 #define NV50_SEMANTIC_TEXCOORD      (TGSI_SEMANTIC_COUNT + 1)
  73 #define NV50_SEMANTIC_POINTCOORD    (TGSI_SEMANTIC_COUNT + 2)
  74 #define NV50_SEMANTIC_VIEWPORTINDEX (TGSI_SEMANTIC_COUNT + 4)
  75 #define NV50_SEMANTIC_LAYER         (TGSI_SEMANTIC_COUNT + 5)
  76 #define NV50_SEMANTIC_INVOCATIONID  (TGSI_SEMANTIC_COUNT + 6)
  77 #define NV50_SEMANTIC_TESSFACTOR    (TGSI_SEMANTIC_COUNT + 7)
  78 #define NV50_SEMANTIC_TESSCOORD     (TGSI_SEMANTIC_COUNT + 8)
  79 #define NV50_SEMANTIC_SAMPLEMASK    (TGSI_SEMANTIC_COUNT + 9)
  80 #define NV50_SEMANTIC_COUNT         (TGSI_SEMANTIC_COUNT + 10)
  81
  82 #define NV50_TESS_PART_FRACT_ODD  0
  83 #define NV50_TESS_PART_FRACT_EVEN 1
  84 #define NV50_TESS_PART_POW2       2
  85 #define NV50_TESS_PART_INTEGER    3
  86
  87 #define NV50_PRIM_PATCHES PIPE_PRIM_MAX
  88
  89 struct nv50_ir_prog_info
  90 {
  91    uint16_t target; /* chipset (0x50, 0x84, 0xc0, ...) */
  92
  93    uint8_t type; /* PIPE_SHADER */
  94
  95    uint8_t optLevel; /* optimization level (0 to 3) */
  96    uint8_t dbgFlags;
  97
  98    struct {
  99       int16_t maxGPR;     /* may be -1 if none used */
 100       int16_t maxOutput;
 101       uint32_t tlsSpace;  /* required local memory per thread */
 102       uint32_t *code;
 103       uint32_t codeSize;
 104       uint8_t sourceRep;  /* NV50_PROGRAM_IR */
 105       const void *source;
 106       void *relocData;
 107    } bin;
 108
 109    struct nv50_ir_varying sv[PIPE_MAX_SHADER_INPUTS];
 110    struct nv50_ir_varying in[PIPE_MAX_SHADER_INPUTS];
 111    struct nv50_ir_varying out[PIPE_MAX_SHADER_OUTPUTS];
 112    uint8_t numInputs;
 113    uint8_t numOutputs;
 114    uint8_t numPatchConstants; /* also included in numInputs/numOutputs */
 115    uint8_t numSysVals;
 116
 117    struct {
 118       uint32_t *buf;    /* for IMMEDIATE_ARRAY */
 119       uint16_t bufSize; /* size of immediate array */
 120       uint16_t count;   /* count of inline immediates */
 121       uint32_t *data;   /* inline immediate data */
 122       uint8_t *type;    /* for each vec4 (128 bit) */
 123    } immd;
 124
 125    union {
 126       struct {
 127          uint32_t inputMask[4]; /* mask of attributes read (1 bit per scalar) */
 128       } vp;
 129       struct {
 130          uint8_t inputPatchSize;
 131          uint8_t outputPatchSize;
 132          uint8_t partitioning;    /* PIPE_TESS_PART */
 133          int8_t winding;          /* +1 (clockwise) / -1 (counter-clockwise) */
 134          uint8_t domain;          /* PIPE_PRIM_{QUADS,TRIANGLES,LINES} */
 135          uint8_t outputPrim;      /* PIPE_PRIM_{TRIANGLES,LINES,POINTS} */
 136       } tp;
 137       struct {
 138          uint8_t inputPrim;
 139          uint8_t outputPrim;
 140          unsigned instanceCount;
 141          unsigned maxVertices;
 142       } gp;
 143       struct {
 144          unsigned numColourResults;
 145          boolean writesDepth;
 146          boolean earlyFragTests;
 147          boolean separateFragData;
 148          boolean usesDiscard;
 149       } fp;
 150    } prop;
 151
 152    struct {
 153       uint8_t clipDistance;      /* index of first clip distance output */
 154       uint8_t clipDistanceMask;  /* mask of clip distances defined */
 155       uint8_t cullDistanceMask;  /* clip distance mode (1 bit per output) */
 156       int8_t genUserClip;        /* request user clip planes for ClipVertex */
 157       uint8_t pointSize;         /* output index for PointSize */
 158       uint8_t edgeFlagIn;
 159       uint8_t edgeFlagOut;
 160       uint8_t fragDepth;         /* output index of FragDepth */
 161       uint8_t sampleMask;        /* output index of SampleMask */
 162       uint8_t backFaceColor[2];  /* input/output indices of back face colour */
 163       uint8_t globalAccess;      /* 1 for read, 2 for wr, 3 for rw */
 164    } io;
 165
 166    /* driver callback to assign input/output locations */
 167    int (*assignSlots)(struct nv50_ir_prog_info *);
 168 };
 169
 170 #ifdef __cplusplus
 171 extern "C" {
 172 #endif
 173
 174 extern int nv50_ir_generate_code(struct nv50_ir_prog_info *);
 175
 176 extern void nv50_ir_relocate_code(void *relocData, uint32_t *code,
 177                                   uint32_t codePos,
 178                                   uint32_t libPos,
 179                                   uint32_t dataPos);
 180
 181 /* obtain code that will be shared among programs */
 182 extern void nv50_ir_get_target_library(uint32_t chipset,
 183                                        const uint32_t **code, uint32_t *size);
 184
 185 #ifdef __cplusplus
 186 }
 187 #endif
 188
 189 #endif // __NV50_IR_DRIVER_H__