diff options
Diffstat (limited to 'src/mesa/tnl/t_vb_lighttmp.h')
| -rw-r--r-- | src/mesa/tnl/t_vb_lighttmp.h | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/src/mesa/tnl/t_vb_lighttmp.h b/src/mesa/tnl/t_vb_lighttmp.h index 4ebef2356f5..0a98c6b02a6 100644 --- a/src/mesa/tnl/t_vb_lighttmp.h +++ b/src/mesa/tnl/t_vb_lighttmp.h @@ -637,185 +637,12 @@ static void TAG(light_fast_rgba)( GLcontext *ctx, - -/* - * Use current lighting/material settings to compute the color indexes - * for an array of vertices. - * Input: n - number of vertices to light - * side - 0=use front material, 1=use back material - * vertex - array of [n] vertex position in eye coordinates - * normal - array of [n] surface normal vector - * Output: indexResult - resulting array of [n] color indexes - */ -static void TAG(light_ci)( GLcontext *ctx, - struct vertex_buffer *VB, - struct tnl_pipeline_stage *stage, - GLvector4f *input ) -{ - struct light_stage_data *store = LIGHT_STAGE_DATA(stage); - GLuint j; - const GLuint vstride = input->stride; - const GLfloat *vertex = (GLfloat *) input->data; - const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride; - const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data; - GLfloat *indexResult[2]; - const GLuint nr = VB->Count; - -#ifdef TRACE - fprintf(stderr, "%s\n", __FUNCTION__ ); -#endif - - VB->AttribPtr[_TNL_ATTRIB_COLOR_INDEX] = &store->LitIndex[0]; -#if IDX & LIGHT_TWOSIDE - VB->BackfaceIndexPtr = &store->LitIndex[1]; -#endif - - indexResult[0] = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_COLOR_INDEX]->data; -#if IDX & LIGHT_TWOSIDE - indexResult[1] = (GLfloat *)VB->BackfaceIndexPtr->data; -#endif - - /* loop over vertices */ - for (j=0; j<nr; j++,STRIDE_F(vertex,vstride),STRIDE_F(normal, nstride)) { - GLfloat diffuse[2], specular[2]; - GLuint side = 0; - struct gl_light *light; - -#if IDX & LIGHT_MATERIAL - update_materials( ctx, store ); -#endif - - diffuse[0] = specular[0] = 0.0F; - -#if IDX & LIGHT_TWOSIDE - diffuse[1] = specular[1] = 0.0F; -#endif - - /* Accumulate diffuse and specular from each light source */ - foreach (light, &ctx->Light.EnabledList) { - - GLfloat attenuation = 1.0F; - GLfloat VP[3]; /* unit vector from vertex to light */ - GLfloat n_dot_VP; /* dot product of l and n */ - GLfloat *h, n_dot_h, correction = 1.0; - - /* compute l and attenuation */ - if (!(light->_Flags & LIGHT_POSITIONAL)) { - /* directional light */ - COPY_3V(VP, light->_VP_inf_norm); - } - else { - GLfloat d; /* distance from vertex to light */ - - SUB_3V(VP, light->_Position, vertex); - - d = (GLfloat) LEN_3FV( VP ); - if ( d > 1e-6) { - GLfloat invd = 1.0F / d; - SELF_SCALE_SCALAR_3V(VP, invd); - } - - attenuation = 1.0F / (light->ConstantAttenuation + d * - (light->LinearAttenuation + d * - light->QuadraticAttenuation)); - - /* spotlight attenuation */ - if (light->_Flags & LIGHT_SPOT) { - GLfloat PV_dot_dir = - DOT3(VP, light->_NormSpotDirection); - if (PV_dot_dir < light->_CosCutoff) { - continue; /* this light makes no contribution */ - } - else { - GLdouble x = PV_dot_dir * (EXP_TABLE_SIZE-1); - GLint k = (GLint) x; - GLfloat spot = (GLfloat) (light->_SpotExpTable[k][0] - + (x-k)*light->_SpotExpTable[k][1]); - attenuation *= spot; - } - } - } - - if (attenuation < 1e-3) - continue; /* this light makes no contribution */ - - n_dot_VP = DOT3( normal, VP ); - - /* which side are we lighting? */ - if (n_dot_VP < 0.0F) { -#if IDX & LIGHT_TWOSIDE - side = 1; - correction = -1; - n_dot_VP = -n_dot_VP; -#else - continue; -#endif - } - - /* accumulate diffuse term */ - diffuse[side] += n_dot_VP * light->_dli * attenuation; - - /* specular term */ - if (ctx->Light.Model.LocalViewer) { - GLfloat v[3]; - COPY_3V(v, vertex); - NORMALIZE_3FV(v); - SUB_3V(VP, VP, v); /* h = VP + VPe */ - h = VP; - NORMALIZE_3FV(h); - } - else if (light->_Flags & LIGHT_POSITIONAL) { - h = VP; - /* Strangely, disabling this addition fixes a conformance - * problem. If this code is enabled, l_sed.c fails. - */ - /*ACC_3V(h, ctx->_EyeZDir);*/ - NORMALIZE_3FV(h); - } - else { - h = light->_h_inf_norm; - } - - n_dot_h = correction * DOT3(normal, h); - if (n_dot_h > 0.0F) { - GLfloat spec_coef; - struct gl_shine_tab *tab = ctx->_ShineTable[side]; - GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec_coef); - specular[side] += spec_coef * light->_sli * attenuation; - } - } /*loop over lights*/ - - /* Now compute final color index */ - for (side = 0 ; side < NR_SIDES ; side++) { - const GLfloat *ind = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_INDEXES + side]; - GLfloat index; - - if (specular[side] > 1.0F) { - index = ind[MAT_INDEX_SPECULAR]; - } - else { - GLfloat d_a = ind[MAT_INDEX_DIFFUSE] - ind[MAT_INDEX_AMBIENT]; - GLfloat s_a = ind[MAT_INDEX_SPECULAR] - ind[MAT_INDEX_AMBIENT]; - index = (ind[MAT_INDEX_AMBIENT] - + diffuse[side] * (1.0F-specular[side]) * d_a - + specular[side] * s_a); - if (index > ind[MAT_INDEX_SPECULAR]) { - index = ind[MAT_INDEX_SPECULAR]; - } - } - indexResult[side][j] = index; - } - } /*for vertex*/ -} - - - static void TAG(init_light_tab)( void ) { _tnl_light_tab[IDX] = TAG(light_rgba); _tnl_light_fast_tab[IDX] = TAG(light_fast_rgba); _tnl_light_fast_single_tab[IDX] = TAG(light_fast_rgba_single); _tnl_light_spec_tab[IDX] = TAG(light_rgba_spec); - _tnl_light_ci_tab[IDX] = TAG(light_ci); } |