diff options
Diffstat (limited to 'src/mesa/tnl')
| -rw-r--r-- | src/mesa/tnl/t_vp_build.c | 431 |
1 files changed, 431 insertions, 0 deletions
diff --git a/src/mesa/tnl/t_vp_build.c b/src/mesa/tnl/t_vp_build.c index 5ef0f7e705..ca1df04868 100644 --- a/src/mesa/tnl/t_vp_build.c +++ b/src/mesa/tnl/t_vp_build.c @@ -35,6 +35,437 @@ #include "t_vp_build.h" +struct state_key { + unsigned light_global_enabled:1; + unsigned light_local_viewer:1; + unsigned light_twoside:1; + unsigned light_color_material:1; + unsigned light_color_material_mask:12; + unsigned light_material_mask:12; + + unsigned normalize:1; + unsigned rescale_normals:1; + unsigned fog_source_is_depth:1; + unsigned tnl_do_vertex_fog:1; + unsigned separate_specular:1; + unsigned fog_mode:2; + unsigned point_attenuated:1; + unsigned texture_enabled_global:1; + unsigned fragprog_inputs_read:12; + + struct { + unsigned light_enabled:1; + unsigned light_eyepos3_is_zero:1; + unsigned light_spotcutoff_is_180:1; + unsigned light_attenuated:1; + unsigned texunit_really_enabled:1; + unsigned texmat_enabled:1; + unsigned texgen_enabled:4; + unsigned texgen_mode0:4; + unsigned texgen_mode1:4; + unsigned texgen_mode2:4; + unsigned texgen_mode3:4; + } unit[8]; +}; + + + +#define FOG_NONE 0 +#define FOG_LINEAR 1 +#define FOG_EXP 2 +#define FOG_EXP2 3 + +static GLuint translate_fog_mode( GLenum mode ) +{ + switch (mode) { + case GL_LINEAR: return FOG_LINEAR; + case GL_EXP: return FOG_EXP; + case GL_EXP2: return FOG_EXP2; + default: return FOG_NONE; + } +} + +#define TXG_NONE 0 +#define TXG_OBJ_LINEAR 1 +#define TXG_EYE_LINEAR 2 +#define TXG_SPHERE_MAP 3 +#define TXG_REFLECTION_MAP 4 +#define TXG_NORMAL_MAP 5 + +static GLuint translate_texgen( GLboolean enabled, GLenum mode ) +{ + if (!enabled) + return TXG_NONE; + + switch (mode) { + case GL_OBJECT_LINEAR: return TXG_OBJ_LINEAR; + case GL_EYE_LINEAR: return TXG_EYE_LINEAR; + case GL_SPHERE_MAP: return TXG_SPHERE_MAP; + case GL_REFLECTION_MAP_NV: return TXG_REFLECTION_MAP; + case GL_NORMAL_MAP_NV: return TXG_NORMAL_MAP; + default: return TXG_NONE; + } +} + +static struct state_key *make_state_key( GLcontext *ctx ) +{ + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + const struct gl_fragment_program *fp = ctx->FragmentProgram._Current; + struct state_key *key = CALLOC_STRUCT(state_key); + GLuint i; + + /* This now relies on texenvprogram.c being active: + */ + assert(fp); + + key->fragprog_inputs_read = fp->Base.InputsRead; + + key->separate_specular = (ctx->Light.Model.ColorControl == + GL_SEPARATE_SPECULAR_COLOR); + + if (ctx->Light.Enabled) { + key->light_global_enabled = 1; + + if (ctx->Light.Model.LocalViewer) + key->light_local_viewer = 1; + + if (ctx->Light.Model.TwoSide) + key->light_twoside = 1; + + if (ctx->Light.ColorMaterialEnabled) { + key->light_color_material = 1; + key->light_color_material_mask = ctx->Light.ColorMaterialBitmask; + } + + for (i = _TNL_FIRST_MAT; i <= _TNL_LAST_MAT; i++) + if (VB->AttribPtr[i]->stride) + key->light_material_mask |= 1<<(i-_TNL_ATTRIB_MAT_FRONT_AMBIENT); + + for (i = 0; i < MAX_LIGHTS; i++) { + struct gl_light *light = &ctx->Light.Light[i]; + + if (light->Enabled) { + key->unit[i].light_enabled = 1; + + if (light->EyePosition[3] == 0.0) + key->unit[i].light_eyepos3_is_zero = 1; + + if (light->SpotCutoff == 180.0) + key->unit[i].light_spotcutoff_is_180 = 1; + + if (light->ConstantAttenuation != 1.0 || + light->LinearAttenuation != 0.0 || + light->QuadraticAttenuation != 0.0) + key->unit[i].light_attenuated = 1; + } + } + } + + if (ctx->Transform.Normalize) + key->normalize = 1; + + if (ctx->Transform.RescaleNormals) + key->rescale_normals = 1; + + key->fog_mode = translate_fog_mode(fp->FogOption); + + if (ctx->Fog.FogCoordinateSource == GL_FRAGMENT_DEPTH_EXT) + key->fog_source_is_depth = 1; + + if (tnl->_DoVertexFog) + key->tnl_do_vertex_fog = 1; + + if (ctx->Point._Attenuated) + key->point_attenuated = 1; + + if (ctx->Texture._TexGenEnabled || + ctx->Texture._TexMatEnabled || + ctx->Texture._EnabledUnits) + key->texture_enabled_global = 1; + + for (i = 0; i < MAX_TEXTURE_UNITS; i++) { + struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i]; + + if (texUnit->_ReallyEnabled) + key->unit[i].texunit_really_enabled = 1; + + if (ctx->Texture._TexMatEnabled & ENABLE_TEXMAT(i)) + key->unit[i].texmat_enabled = 1; + + if (texUnit->TexGenEnabled) { + key->unit[i].texgen_enabled = 1; + + key->unit[i].texgen_mode0 = + translate_texgen( texUnit->TexGenEnabled & (1<<0), + texUnit->GenModeS ); + key->unit[i].texgen_mode1 = + translate_texgen( texUnit->TexGenEnabled & (1<<1), + texUnit->GenModeT ); + key->unit[i].texgen_mode2 = + translate_texgen( texUnit->TexGenEnabled & (1<<2), + texUnit->GenModeR ); + key->unit[i].texgen_mode3 = + translate_texgen( texUnit->TexGenEnabled & (1<<3), + texUnit->GenModeQ ); + } + } + + return key; +} + + + +/* Very useful debugging tool - produces annotated listing of + * generated program with line/function references for each + * instruction back into this file: + */ +#define DISASSEM (MESA_VERBOSE&VERBOSE_DISASSEM) + +/* Should be tunable by the driver - do we want to do matrix + * multiplications with DP4's or with MUL/MAD's? SSE works better + * with the latter, drivers may differ. + */ +#define PREFER_DP4 0 + +#define MAX_INSN 350 + +/* Use uregs to represent registers internally, translate to Mesa's + * expected formats on emit. + * + * NOTE: These are passed by value extensively in this file rather + * than as usual by pointer reference. If this disturbs you, try + * remembering they are just 32bits in size. + * + * GCC is smart enough to deal with these dword-sized structures in + * much the same way as if I had defined them as dwords and was using + * macros to access and set the fields. This is much nicer and easier + * to evolve. + */ +struct ureg { + GLuint file:4; + GLint idx:8; /* relative addressing may be negative */ + GLuint negate:1; + GLuint swz:12; + GLuint pad:7; +}; + + +struct tnl_program { + const struct state_key *state; + struct gl_vertex_program *program; + + GLuint temp_in_use; + GLuint temp_reserved; + + struct ureg eye_position; + struct ureg eye_position_normalized; + struct ureg eye_normal; + struct ureg identity; + + GLuint materials; + GLuint color_materials; +}; + + +static const struct ureg undef = { + PROGRAM_UNDEFINED, + ~0, + 0, + 0, + 0 +}; + +/* Local shorthand: + */ +#define X SWIZZLE_X +#define Y SWIZZLE_Y +#define Z SWIZZLE_Z +#define W SWIZZLE_W + + +/* Construct a ureg: + */ +static struct ureg make_ureg(GLuint file, GLint idx) +{ + struct ureg reg; + reg.file = file; + reg.idx = idx; + reg.negate = 0; + reg.swz = SWIZZLE_NOOP; + reg.pad = 0; + return reg; +} + + + +static struct ureg negate( struct ureg reg ) +{ + reg.negate ^= 1; + return reg; +} + + +static struct ureg swizzle( struct ureg reg, int x, int y, int z, int w ) +{ + reg.swz = MAKE_SWIZZLE4(GET_SWZ(reg.swz, x), + GET_SWZ(reg.swz, y), + GET_SWZ(reg.swz, z), + GET_SWZ(reg.swz, w)); + + return reg; +} + +static struct ureg swizzle1( struct ureg reg, int x ) +{ + return swizzle(reg, x, x, x, x); +} + +static struct ureg get_temp( struct tnl_program *p ) +{ + int bit = _mesa_ffs( ~p->temp_in_use ); + if (!bit) { + _mesa_problem(NULL, "%s: out of temporaries\n", __FILE__); + _mesa_exit(1); + } + + if ((GLuint) bit > p->program->Base.NumTemporaries) + p->program->Base.NumTemporaries = bit; + + p->temp_in_use |= 1<<(bit-1); + return make_ureg(PROGRAM_TEMPORARY, bit-1); +} + +static struct ureg reserve_temp( struct tnl_program *p ) +{ + struct ureg temp = get_temp( p ); + p->temp_reserved |= 1<<temp.idx; + return temp; +} + +static void release_temp( struct tnl_program *p, struct ureg reg ) +{ + if (reg.file == PROGRAM_TEMPORARY) { + p->temp_in_use &= ~(1<<reg.idx); + p->temp_in_use |= p->temp_reserved; /* can't release reserved temps */ + } +} + +static void release_temps( struct tnl_program *p ) +{ + p->temp_in_use = p->temp_reserved; +} + + + +static struct ureg register_input( struct tnl_program *p, GLuint input ) +{ + p->program->Base.InputsRead |= (1<<input); + return make_ureg(PROGRAM_INPUT, input); +} + +static struct ureg register_output( struct tnl_program *p, GLuint output ) +{ + p->program->Base.OutputsWritten |= (1<<output); + return make_ureg(PROGRAM_OUTPUT, output); +} + +static struct ureg register_const4f( struct tnl_program *p, + GLfloat s0, + GLfloat s1, + GLfloat s2, + GLfloat s3) +{ + GLfloat values[4]; + GLint idx; + GLuint swizzle; + values[0] = s0; + values[1] = s1; + values[2] = s2; + values[3] = s3; + idx = _mesa_add_unnamed_constant( p->program->Base.Parameters, values, 4, + &swizzle ); + ASSERT(swizzle == SWIZZLE_NOOP); + return make_ureg(PROGRAM_STATE_VAR, idx); +} + +#define register_const1f(p, s0) register_const4f(p, s0, 0, 0, 1) +#define register_scalar_const(p, s0) register_const4f(p, s0, s0, s0, s0) +#define register_const2f(p, s0, s1) register_const4f(p, s0, s1, 0, 1) +#define register_const3f(p, s0, s1, s2) register_const4f(p, s0, s1, s2, 1) + +static GLboolean is_undef( struct ureg reg ) +{ + return reg.file == PROGRAM_UNDEFINED; +} + +static struct ureg get_identity_param( struct tnl_program *p ) +{ + if (is_undef(p->identity)) + p->identity = register_const4f(p, 0,0,0,1); + + return p->identity; +} + +static struct ureg register_param5(struct tnl_program *p, + GLint s0, + GLint s1, + GLint s2, + GLint s3, + GLint s4) +{ + gl_state_index tokens[STATE_LENGTH]; + GLint idx; + tokens[0] = s0; + tokens[1] = s1; + tokens[2] = s2; + tokens[3] = s3; + tokens[4] = s4; + idx = _mesa_add_state_reference( p->program->Base.Parameters, tokens ); + return make_ureg(PROGRAM_STATE_VAR, idx); +} + + +#define register_param1(p,s0) register_param5(p,s0,0,0,0,0) +#define register_param2(p,s0,s1) register_param5(p,s0,s1,0,0,0) +#define register_param3(p,s0,s1,s2) register_param5(p,s0,s1,s2,0,0) +#define register_param4(p,s0,s1,s2,s3) register_param5(p,s0,s1,s2,s3,0) + + +static void register_matrix_param5( struct tnl_program *p, + GLint s0, /* modelview, projection, etc */ + GLint s1, /* texture matrix number */ + GLint s2, /* first row */ + GLint s3, /* last row */ + GLint s4, /* inverse, transpose, etc */ + struct ureg *matrix ) +{ + GLint i; + + /* This is a bit sad as the support is there to pull the whole + * matrix out in one go: + */ + for (i = 0; i <= s3 - s2; i++) + matrix[i] = register_param5( p, s0, s1, i, i, s4 ); +} + + +/** + * Convert a ureg source register to a prog_src_register. + */ +static void emit_arg( struct prog_src_register *src, + struct ureg reg ) +{ + assert(reg.file != PROGRAM_OUTPUT); + src->File = reg.file; + src->Index = reg.idx; + src->Swizzle = reg.swz; + src->NegateBase = reg.negate ? NEGATE_XYZW : 0; + src->Abs = 0; + src->NegateAbs = 0; + src->RelAddr = 0; +} + /** * XXX This should go away someday, but still referenced by some drivers... */ |