225977/texenvprogram.i.3

   1 struct gl_fragment_program_state {
   2         unsigned char _Enabled;
   3         struct gl_fragment_program *_TexEnvProgram;
   4 };
   5 struct gl_shader_state {
   6         struct gl_shader_program *CurrentProgram;
   7 };
   8 struct gl_constants {
   9         unsigned int MaxTextureUnits;
  10 } GLvertexformat;
  11 typedef struct {
  12         struct gl_constants Const;
  13         struct gl_fragment_program_state FragmentProgram;
  14         struct gl_shader_state Shader;
  15 } GLcontext;
  16 struct mode_opt {
  17 };
  18 struct state_key {
  19         unsigned int enabled_units;
  20         struct {
  21                 unsigned int NumArgsRGB:2;
  22                 unsigned int ModeRGB:4;
  23                 struct mode_opt OptRGB[3];
  24                 unsigned int ModeA:4;
  25         } unit[8];
  26 };
  27 struct ureg {
  28         unsigned int file:4;
  29         unsigned int idx:8;
  30 };
  31 struct texenv_fragment_program {
  32         struct ureg src_previous;
  33 };
  34 static struct ureg emit_combine(struct texenv_fragment_program *p,
  35                                 struct ureg dest, unsigned int mask,
  36                                 unsigned char saturate, unsigned int unit,
  37                                 unsigned int nr, unsigned int mode,
  38                                 const struct mode_opt *opt)
  39 {
  40         struct ureg src[3];
  41         switch (mode) {
  42         case 6:{
  43                         struct ureg tmp0;
  44                         struct ureg neg1;
  45                         struct ureg two;
  46                         emit_arith(p, 0, tmp0, 0xf, 0, two, src[0], neg1);
  47                 }
  48         }
  49 }
  50 static struct ureg emit_texenv(struct texenv_fragment_program *p,
  51                                unsigned int unit)
  52 {
  53         struct state_key *key;
  54         unsigned char saturate;
  55         struct ureg out;
  56         struct ureg dest;
  57         if (key->unit[unit].ModeRGB == key->unit[unit].ModeA
  58             && args_match(key, unit))
  59                 out =
  60                     emit_combine(p, dest, 0xf, saturate, unit,
  61                                  key->unit[unit].NumArgsRGB,
  62                                  key->unit[unit].ModeRGB,
  63                                  key->unit[unit].OptRGB);
  64 }
  65 static void create_new_program(GLcontext * ctx, struct state_key *key,
  66                                struct gl_fragment_program *program)
  67 {
  68         struct texenv_fragment_program p;
  69         unsigned int unit;
  70         for (; unit < ctx->Const.MaxTextureUnits; ++unit)
  71                 p.src_previous = emit_texenv(&p, unit);
  72 }
  73
  74 _mesa_UpdateTexEnvProgram()
  75 {
  76         GLcontext *ctx;
  77         struct state_key key;
  78         if (!ctx->FragmentProgram._Enabled)
  79                 if (!ctx->Shader.CurrentProgram)
  80                 if (!ctx->FragmentProgram._TexEnvProgram)
  81                         create_new_program(ctx, &key,
  82                                            ctx->FragmentProgram._TexEnvProgram);
  83 }