src/mesa/drivers/dri/r300/vertex_shader.h

   1 #ifndef __VERTEX_SHADER_H__
   2 #define __VERTEX_SHADER_H__
   3
   4 #include "r300_reg.h"
   5
   6 typedef struct {
   7         CARD32 op;
   8         CARD32 src1;
   9         CARD32 src2;
  10         CARD32 src3;
  11         } VERTEX_SHADER_INSTRUCTION;
  12
  13 #define VSF_FLAG_X      1
  14 #define VSF_FLAG_Y      2
  15 #define VSF_FLAG_Z      4
  16 #define VSF_FLAG_W      8
  17 #define VSF_FLAG_XYZ    (VSF_FLAG_X | VSF_FLAG_Y | VSF_FLAG_Z)
  18 #define VSF_FLAG_ALL  0xf
  19 #define VSF_FLAG_NONE  0
  20
  21 #define VSF_OUT_CLASS_TMP       0
  22 #define VSF_OUT_CLASS_RESULT    2
  23
  24
  25 /* first CARD32 of an instruction */
  26
  27 /* possible operations:
  28     DOT, MUL, ADD, MAD, FRC, MAX, MIN, SGE, SLT, EXP, LOG, LIT, POW, RCP, RSQ, EX2,
  29     LG2, MAD_2 */
  30
  31 #define MAKE_VSF_OP(op, out_reg_index, out_reg_fields, class) \
  32    ((op)  \
  33         | ((out_reg_index) << R300_VPI_OUT_REG_INDEX_SHIFT)     \
  34          | ((out_reg_fields) << 20)     \
  35         | ( (class) << 8 ) )
  36
  37 #define EASY_VSF_OP(op, out_reg_index, out_reg_fields, class) \
  38         MAKE_VSF_OP(R300_VPI_OUT_OP_##op, out_reg_index, VSF_FLAG_##out_reg_fields, VSF_OUT_CLASS_##class) \
  39
  40 /* according to Nikolai, the subsequent 3 CARD32 are sources, use same define for each */
  41
  42 #define VSF_IN_CLASS_TMP        0
  43 #define VSF_IN_CLASS_ATTR       1
  44 #define VSF_IN_CLASS_PARAM      2
  45 #define VSF_IN_CLASS_NONE       9
  46
  47 #define VSF_IN_COMPONENT_X      0
  48 #define VSF_IN_COMPONENT_Y      1
  49 #define VSF_IN_COMPONENT_Z      2
  50 #define VSF_IN_COMPONENT_W      3
  51 #define VSF_IN_COMPONENT_ZERO   4
  52 #define VSF_IN_COMPONENT_ONE    5
  53
  54 #define MAKE_VSF_SOURCE(in_reg_index, comp_x, comp_y, comp_z, comp_w, class, negate) \
  55         ( ((in_reg_index)<<R300_VPI_IN_REG_INDEX_SHIFT) \
  56            | ((comp_x)<<R300_VPI_IN_X_SHIFT) \
  57            | ((comp_y)<<R300_VPI_IN_Y_SHIFT) \
  58            | ((comp_z)<<R300_VPI_IN_Z_SHIFT) \
  59            | ((comp_w)<<R300_VPI_IN_W_SHIFT) \
  60            | ((negate)<<25) | ((class)))
  61
  62 #define EASY_VSF_SOURCE(in_reg_index, comp_x, comp_y, comp_z, comp_w, class, negate) \
  63         MAKE_VSF_SOURCE(in_reg_index, \
  64                 VSF_IN_COMPONENT_##comp_x, \
  65                 VSF_IN_COMPONENT_##comp_y, \
  66                 VSF_IN_COMPONENT_##comp_z, \
  67                 VSF_IN_COMPONENT_##comp_w, \
  68                 VSF_IN_CLASS_##class, VSF_FLAG_##negate)
  69
  70 /* special sources: */
  71
  72 /* (1.0,1.0,1.0,1.0) vector (ATTR, plain ) */
  73 #define VSF_ATTR_UNITY(reg)     EASY_VSF_SOURCE(reg, ONE, ONE, ONE, ONE, ATTR, NONE)
  74 #define VSF_UNITY(reg)  EASY_VSF_SOURCE(reg, ONE, ONE, ONE, ONE, NONE, NONE)
  75
  76 /* contents of unmodified register */
  77 #define VSF_REG(reg)    EASY_VSF_SOURCE(reg, X, Y, Z, W, ATTR, NONE)
  78
  79 /* contents of unmodified parameter */
  80 #define VSF_PARAM(reg)  EASY_VSF_SOURCE(reg, X, Y, Z, W, PARAM, NONE)
  81
  82 /* contents of unmodified temporary register */
  83 #define VSF_TMP(reg)    EASY_VSF_SOURCE(reg, X, Y, Z, W, TMP, NONE)
  84
  85 /* components of ATTR register */
  86 #define VSF_ATTR_X(reg) EASY_VSF_SOURCE(reg, X, X, X, X, ATTR, NONE)
  87 #define VSF_ATTR_Y(reg) EASY_VSF_SOURCE(reg, Y, Y, Y, Y, ATTR, NONE)
  88 #define VSF_ATTR_Z(reg) EASY_VSF_SOURCE(reg, Z, Z, Z, Z, ATTR, NONE)
  89 #define VSF_ATTR_W(reg) EASY_VSF_SOURCE(reg, W, W, W, W, ATTR, NONE)
  90
  91 #endif