diff options
Diffstat (limited to 'mesalib/src/mesa/tnl/t_vb_lighttmp.h')
| -rw-r--r-- | mesalib/src/mesa/tnl/t_vb_lighttmp.h | 1302 |
1 files changed, 651 insertions, 651 deletions
diff --git a/mesalib/src/mesa/tnl/t_vb_lighttmp.h b/mesalib/src/mesa/tnl/t_vb_lighttmp.h index 0a98c6b02..63b817ab6 100644 --- a/mesalib/src/mesa/tnl/t_vb_lighttmp.h +++ b/mesalib/src/mesa/tnl/t_vb_lighttmp.h @@ -1,651 +1,651 @@ -/* - * Mesa 3-D graphics library - * Version: 5.1 - * - * Copyright (C) 1999-2003 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * - * Authors: - * Brian Paul - * Keith Whitwell <keith@tungstengraphics.com> - */ - - -#if IDX & LIGHT_TWOSIDE -# define NR_SIDES 2 -#else -# define NR_SIDES 1 -#endif - - -/* define TRACE to trace lighting code */ -/* #define TRACE 1 */ - -/* - * ctx is the current context - * VB is the vertex buffer - * stage is the lighting stage-private data - * input is the vector of eye or object-space vertex coordinates - */ -static void TAG(light_rgba_spec)( GLcontext *ctx, - struct vertex_buffer *VB, - struct tnl_pipeline_stage *stage, - GLvector4f *input ) -{ - struct light_stage_data *store = LIGHT_STAGE_DATA(stage); - GLfloat (*base)[3] = ctx->Light._BaseColor; - GLfloat sumA[2]; - 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 (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data; - GLfloat (*Fspec)[4] = (GLfloat (*)[4]) store->LitSecondary[0].data; -#if IDX & LIGHT_TWOSIDE - GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data; - GLfloat (*Bspec)[4] = (GLfloat (*)[4]) store->LitSecondary[1].data; -#endif - - const GLuint nr = VB->Count; - -#ifdef TRACE - fprintf(stderr, "%s\n", __FUNCTION__ ); -#endif - - VB->AttribPtr[_TNL_ATTRIB_COLOR0] = &store->LitColor[0]; - VB->AttribPtr[_TNL_ATTRIB_COLOR1] = &store->LitSecondary[0]; - sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; - -#if IDX & LIGHT_TWOSIDE - VB->BackfaceColorPtr = &store->LitColor[1]; - VB->BackfaceSecondaryColorPtr = &store->LitSecondary[1]; - sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; -#endif - - - store->LitColor[0].stride = 16; - store->LitColor[1].stride = 16; - - for (j = 0; j < nr; j++,STRIDE_F(vertex,vstride),STRIDE_F(normal,nstride)) { - GLfloat sum[2][3], spec[2][3]; - struct gl_light *light; - -#if IDX & LIGHT_MATERIAL - update_materials( ctx, store ); - sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; -#if IDX & LIGHT_TWOSIDE - sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; -#endif -#endif - - COPY_3V(sum[0], base[0]); - ZERO_3V(spec[0]); - -#if IDX & LIGHT_TWOSIDE - COPY_3V(sum[1], base[1]); - ZERO_3V(spec[1]); -#endif - - /* Add contribution from each enabled light source */ - foreach (light, &ctx->Light.EnabledList) { - GLfloat n_dot_h; - GLfloat correction; - GLint side; - GLfloat contrib[3]; - GLfloat attenuation; - GLfloat VP[3]; /* unit vector from vertex to light */ - GLfloat n_dot_VP; /* n dot VP */ - GLfloat *h; - - /* compute VP and attenuation */ - if (!(light->_Flags & LIGHT_POSITIONAL)) { - /* directional light */ - COPY_3V(VP, light->_VP_inf_norm); - attenuation = light->_VP_inf_spot_attenuation; - } - 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 */ - - /* Compute dot product or normal and vector from V to light pos */ - n_dot_VP = DOT3( normal, VP ); - - /* Which side gets the diffuse & specular terms? */ - if (n_dot_VP < 0.0F) { - ACC_SCALE_SCALAR_3V(sum[0], attenuation, light->_MatAmbient[0]); -#if IDX & LIGHT_TWOSIDE - side = 1; - correction = -1; - n_dot_VP = -n_dot_VP; -#else - continue; -#endif - } - else { -#if IDX & LIGHT_TWOSIDE - ACC_SCALE_SCALAR_3V( sum[1], attenuation, light->_MatAmbient[1]); -#endif - side = 0; - correction = 1; - } - - /* diffuse term */ - COPY_3V(contrib, light->_MatAmbient[side]); - ACC_SCALE_SCALAR_3V(contrib, n_dot_VP, light->_MatDiffuse[side]); - ACC_SCALE_SCALAR_3V(sum[side], attenuation, contrib ); - - /* specular term - cannibalize VP... */ - 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; - 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 ); - - if (spec_coef > 1.0e-10) { - spec_coef *= attenuation; - ACC_SCALE_SCALAR_3V( spec[side], spec_coef, - light->_MatSpecular[side]); - } - } - } /*loop over lights*/ - - COPY_3V( Fcolor[j], sum[0] ); - COPY_3V( Fspec[j], spec[0] ); - Fcolor[j][3] = sumA[0]; - -#if IDX & LIGHT_TWOSIDE - COPY_3V( Bcolor[j], sum[1] ); - COPY_3V( Bspec[j], spec[1] ); - Bcolor[j][3] = sumA[1]; -#endif - } -} - - -static void TAG(light_rgba)( GLcontext *ctx, - struct vertex_buffer *VB, - struct tnl_pipeline_stage *stage, - GLvector4f *input ) -{ - struct light_stage_data *store = LIGHT_STAGE_DATA(stage); - GLuint j; - - GLfloat (*base)[3] = ctx->Light._BaseColor; - GLfloat sumA[2]; - - 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 (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data; -#if IDX & LIGHT_TWOSIDE - GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data; -#endif - - const GLuint nr = VB->Count; - -#ifdef TRACE - fprintf(stderr, "%s\n", __FUNCTION__ ); -#endif - - VB->AttribPtr[_TNL_ATTRIB_COLOR0] = &store->LitColor[0]; - sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; - -#if IDX & LIGHT_TWOSIDE - VB->BackfaceColorPtr = &store->LitColor[1]; - sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; -#endif - - store->LitColor[0].stride = 16; - store->LitColor[1].stride = 16; - - for (j = 0; j < nr; j++,STRIDE_F(vertex,vstride),STRIDE_F(normal,nstride)) { - GLfloat sum[2][3]; - struct gl_light *light; - -#if IDX & LIGHT_MATERIAL - update_materials( ctx, store ); - sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; -#if IDX & LIGHT_TWOSIDE - sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; -#endif -#endif - - COPY_3V(sum[0], base[0]); - -#if IDX & LIGHT_TWOSIDE - COPY_3V(sum[1], base[1]); -#endif - - /* Add contribution from each enabled light source */ - foreach (light, &ctx->Light.EnabledList) { - - GLfloat n_dot_h; - GLfloat correction; - GLint side; - GLfloat contrib[3]; - GLfloat attenuation = 1.0; - GLfloat VP[3]; /* unit vector from vertex to light */ - GLfloat n_dot_VP; /* n dot VP */ - GLfloat *h; - - /* compute VP and attenuation */ - if (!(light->_Flags & LIGHT_POSITIONAL)) { - /* directional light */ - COPY_3V(VP, light->_VP_inf_norm); - attenuation = light->_VP_inf_spot_attenuation; - } - 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 */ - - /* Compute dot product or normal and vector from V to light pos */ - n_dot_VP = DOT3( normal, VP ); - - /* which side are we lighting? */ - if (n_dot_VP < 0.0F) { - ACC_SCALE_SCALAR_3V(sum[0], attenuation, light->_MatAmbient[0]); -#if IDX & LIGHT_TWOSIDE - side = 1; - correction = -1; - n_dot_VP = -n_dot_VP; -#else - continue; -#endif - } - else { -#if IDX & LIGHT_TWOSIDE - ACC_SCALE_SCALAR_3V( sum[1], attenuation, light->_MatAmbient[1]); -#endif - side = 0; - correction = 1; - } - - COPY_3V(contrib, light->_MatAmbient[side]); - - /* diffuse term */ - ACC_SCALE_SCALAR_3V(contrib, n_dot_VP, light->_MatDiffuse[side]); - - /* specular term - cannibalize VP... */ - { - 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; - 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 ); - - ACC_SCALE_SCALAR_3V( contrib, spec_coef, - light->_MatSpecular[side]); - } - } - - ACC_SCALE_SCALAR_3V( sum[side], attenuation, contrib ); - } - - COPY_3V( Fcolor[j], sum[0] ); - Fcolor[j][3] = sumA[0]; - -#if IDX & LIGHT_TWOSIDE - COPY_3V( Bcolor[j], sum[1] ); - Bcolor[j][3] = sumA[1]; -#endif - } -} - - - - -/* As below, but with just a single light. - */ -static void TAG(light_fast_rgba_single)( GLcontext *ctx, - struct vertex_buffer *VB, - struct tnl_pipeline_stage *stage, - GLvector4f *input ) - -{ - struct light_stage_data *store = LIGHT_STAGE_DATA(stage); - const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride; - const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data; - GLfloat (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data; -#if IDX & LIGHT_TWOSIDE - GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data; -#endif - const struct gl_light *light = ctx->Light.EnabledList.next; - GLuint j = 0; - GLfloat base[2][4]; -#if IDX & LIGHT_MATERIAL - const GLuint nr = VB->Count; -#else - const GLuint nr = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->count; -#endif - -#ifdef TRACE - fprintf(stderr, "%s\n", __FUNCTION__ ); -#endif - - (void) input; /* doesn't refer to Eye or Obj */ - - VB->AttribPtr[_TNL_ATTRIB_COLOR0] = &store->LitColor[0]; -#if IDX & LIGHT_TWOSIDE - VB->BackfaceColorPtr = &store->LitColor[1]; -#endif - - if (nr > 1) { - store->LitColor[0].stride = 16; - store->LitColor[1].stride = 16; - } - else { - store->LitColor[0].stride = 0; - store->LitColor[1].stride = 0; - } - - for (j = 0; j < nr; j++, STRIDE_F(normal,nstride)) { - - GLfloat n_dot_VP; - -#if IDX & LIGHT_MATERIAL - update_materials( ctx, store ); -#endif - - /* No attenuation, so incoporate _MatAmbient into base color. - */ -#if !(IDX & LIGHT_MATERIAL) - if ( j == 0 ) -#endif - { - COPY_3V(base[0], light->_MatAmbient[0]); - ACC_3V(base[0], ctx->Light._BaseColor[0] ); - base[0][3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; - -#if IDX & LIGHT_TWOSIDE - COPY_3V(base[1], light->_MatAmbient[1]); - ACC_3V(base[1], ctx->Light._BaseColor[1]); - base[1][3] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; -#endif - } - - n_dot_VP = DOT3(normal, light->_VP_inf_norm); - - if (n_dot_VP < 0.0F) { -#if IDX & LIGHT_TWOSIDE - GLfloat n_dot_h = -DOT3(normal, light->_h_inf_norm); - GLfloat sum[3]; - COPY_3V(sum, base[1]); - ACC_SCALE_SCALAR_3V(sum, -n_dot_VP, light->_MatDiffuse[1]); - if (n_dot_h > 0.0F) { - GLfloat spec; - GET_SHINE_TAB_ENTRY( ctx->_ShineTable[1], n_dot_h, spec ); - ACC_SCALE_SCALAR_3V(sum, spec, light->_MatSpecular[1]); - } - COPY_3V(Bcolor[j], sum ); - Bcolor[j][3] = base[1][3]; -#endif - COPY_4FV(Fcolor[j], base[0]); - } - else { - GLfloat n_dot_h = DOT3(normal, light->_h_inf_norm); - GLfloat sum[3]; - COPY_3V(sum, base[0]); - ACC_SCALE_SCALAR_3V(sum, n_dot_VP, light->_MatDiffuse[0]); - if (n_dot_h > 0.0F) { - GLfloat spec; - GET_SHINE_TAB_ENTRY( ctx->_ShineTable[0], n_dot_h, spec ); - ACC_SCALE_SCALAR_3V(sum, spec, light->_MatSpecular[0]); - - } - COPY_3V(Fcolor[j], sum ); - Fcolor[j][3] = base[0][3]; -#if IDX & LIGHT_TWOSIDE - COPY_4FV(Bcolor[j], base[1]); -#endif - } - } -} - - -/* Light infinite lights - */ -static void TAG(light_fast_rgba)( GLcontext *ctx, - struct vertex_buffer *VB, - struct tnl_pipeline_stage *stage, - GLvector4f *input ) -{ - struct light_stage_data *store = LIGHT_STAGE_DATA(stage); - GLfloat sumA[2]; - const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride; - const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data; - GLfloat (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data; -#if IDX & LIGHT_TWOSIDE - GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data; -#endif - GLuint j = 0; -#if IDX & LIGHT_MATERIAL - const GLuint nr = VB->Count; -#else - const GLuint nr = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->count; -#endif - const struct gl_light *light; - -#ifdef TRACE - fprintf(stderr, "%s %d\n", __FUNCTION__, nr ); -#endif - - (void) input; - - sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; - sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; - - VB->AttribPtr[_TNL_ATTRIB_COLOR0] = &store->LitColor[0]; -#if IDX & LIGHT_TWOSIDE - VB->BackfaceColorPtr = &store->LitColor[1]; -#endif - - if (nr > 1) { - store->LitColor[0].stride = 16; - store->LitColor[1].stride = 16; - } - else { - store->LitColor[0].stride = 0; - store->LitColor[1].stride = 0; - } - - for (j = 0; j < nr; j++, STRIDE_F(normal,nstride)) { - - GLfloat sum[2][3]; - -#if IDX & LIGHT_MATERIAL - update_materials( ctx, store ); - - sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3]; -#if IDX & LIGHT_TWOSIDE - sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3]; -#endif -#endif - - - COPY_3V(sum[0], ctx->Light._BaseColor[0]); -#if IDX & LIGHT_TWOSIDE - COPY_3V(sum[1], ctx->Light._BaseColor[1]); -#endif - - foreach (light, &ctx->Light.EnabledList) { - GLfloat n_dot_h, n_dot_VP, spec; - - ACC_3V(sum[0], light->_MatAmbient[0]); -#if IDX & LIGHT_TWOSIDE - ACC_3V(sum[1], light->_MatAmbient[1]); -#endif - - n_dot_VP = DOT3(normal, light->_VP_inf_norm); - - if (n_dot_VP > 0.0F) { - ACC_SCALE_SCALAR_3V(sum[0], n_dot_VP, light->_MatDiffuse[0]); - n_dot_h = DOT3(normal, light->_h_inf_norm); - if (n_dot_h > 0.0F) { - struct gl_shine_tab *tab = ctx->_ShineTable[0]; - GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec ); - ACC_SCALE_SCALAR_3V( sum[0], spec, light->_MatSpecular[0]); - } - } -#if IDX & LIGHT_TWOSIDE - else { - ACC_SCALE_SCALAR_3V(sum[1], -n_dot_VP, light->_MatDiffuse[1]); - n_dot_h = -DOT3(normal, light->_h_inf_norm); - if (n_dot_h > 0.0F) { - struct gl_shine_tab *tab = ctx->_ShineTable[1]; - GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec ); - ACC_SCALE_SCALAR_3V( sum[1], spec, light->_MatSpecular[1]); - } - } -#endif - } - - COPY_3V( Fcolor[j], sum[0] ); - Fcolor[j][3] = sumA[0]; - -#if IDX & LIGHT_TWOSIDE - COPY_3V( Bcolor[j], sum[1] ); - Bcolor[j][3] = sumA[1]; -#endif - } -} - - - - -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); -} - - -#undef TAG -#undef IDX -#undef NR_SIDES +/*
+ * Mesa 3-D graphics library
+ * Version: 5.1
+ *
+ * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *
+ * Authors:
+ * Brian Paul
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+
+#if IDX & LIGHT_TWOSIDE
+# define NR_SIDES 2
+#else
+# define NR_SIDES 1
+#endif
+
+
+/* define TRACE to trace lighting code */
+/* #define TRACE 1 */
+
+/*
+ * ctx is the current context
+ * VB is the vertex buffer
+ * stage is the lighting stage-private data
+ * input is the vector of eye or object-space vertex coordinates
+ */
+static void TAG(light_rgba_spec)( struct gl_context *ctx,
+ struct vertex_buffer *VB,
+ struct tnl_pipeline_stage *stage,
+ GLvector4f *input )
+{
+ struct light_stage_data *store = LIGHT_STAGE_DATA(stage);
+ GLfloat (*base)[3] = ctx->Light._BaseColor;
+ GLfloat sumA[2];
+ 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 (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data;
+ GLfloat (*Fspec)[4] = (GLfloat (*)[4]) store->LitSecondary[0].data;
+#if IDX & LIGHT_TWOSIDE
+ GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data;
+ GLfloat (*Bspec)[4] = (GLfloat (*)[4]) store->LitSecondary[1].data;
+#endif
+
+ const GLuint nr = VB->Count;
+
+#ifdef TRACE
+ fprintf(stderr, "%s\n", __FUNCTION__ );
+#endif
+
+ VB->AttribPtr[_TNL_ATTRIB_COLOR0] = &store->LitColor[0];
+ VB->AttribPtr[_TNL_ATTRIB_COLOR1] = &store->LitSecondary[0];
+ sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+
+#if IDX & LIGHT_TWOSIDE
+ VB->BackfaceColorPtr = &store->LitColor[1];
+ VB->BackfaceSecondaryColorPtr = &store->LitSecondary[1];
+ sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+
+
+ store->LitColor[0].stride = 16;
+ store->LitColor[1].stride = 16;
+
+ for (j = 0; j < nr; j++,STRIDE_F(vertex,vstride),STRIDE_F(normal,nstride)) {
+ GLfloat sum[2][3], spec[2][3];
+ struct gl_light *light;
+
+#if IDX & LIGHT_MATERIAL
+ update_materials( ctx, store );
+ sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+#if IDX & LIGHT_TWOSIDE
+ sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+#endif
+
+ COPY_3V(sum[0], base[0]);
+ ZERO_3V(spec[0]);
+
+#if IDX & LIGHT_TWOSIDE
+ COPY_3V(sum[1], base[1]);
+ ZERO_3V(spec[1]);
+#endif
+
+ /* Add contribution from each enabled light source */
+ foreach (light, &ctx->Light.EnabledList) {
+ GLfloat n_dot_h;
+ GLfloat correction;
+ GLint side;
+ GLfloat contrib[3];
+ GLfloat attenuation;
+ GLfloat VP[3]; /* unit vector from vertex to light */
+ GLfloat n_dot_VP; /* n dot VP */
+ GLfloat *h;
+
+ /* compute VP and attenuation */
+ if (!(light->_Flags & LIGHT_POSITIONAL)) {
+ /* directional light */
+ COPY_3V(VP, light->_VP_inf_norm);
+ attenuation = light->_VP_inf_spot_attenuation;
+ }
+ 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 */
+
+ /* Compute dot product or normal and vector from V to light pos */
+ n_dot_VP = DOT3( normal, VP );
+
+ /* Which side gets the diffuse & specular terms? */
+ if (n_dot_VP < 0.0F) {
+ ACC_SCALE_SCALAR_3V(sum[0], attenuation, light->_MatAmbient[0]);
+#if IDX & LIGHT_TWOSIDE
+ side = 1;
+ correction = -1;
+ n_dot_VP = -n_dot_VP;
+#else
+ continue;
+#endif
+ }
+ else {
+#if IDX & LIGHT_TWOSIDE
+ ACC_SCALE_SCALAR_3V( sum[1], attenuation, light->_MatAmbient[1]);
+#endif
+ side = 0;
+ correction = 1;
+ }
+
+ /* diffuse term */
+ COPY_3V(contrib, light->_MatAmbient[side]);
+ ACC_SCALE_SCALAR_3V(contrib, n_dot_VP, light->_MatDiffuse[side]);
+ ACC_SCALE_SCALAR_3V(sum[side], attenuation, contrib );
+
+ /* specular term - cannibalize VP... */
+ 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;
+ 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 );
+
+ if (spec_coef > 1.0e-10) {
+ spec_coef *= attenuation;
+ ACC_SCALE_SCALAR_3V( spec[side], spec_coef,
+ light->_MatSpecular[side]);
+ }
+ }
+ } /*loop over lights*/
+
+ COPY_3V( Fcolor[j], sum[0] );
+ COPY_3V( Fspec[j], spec[0] );
+ Fcolor[j][3] = sumA[0];
+
+#if IDX & LIGHT_TWOSIDE
+ COPY_3V( Bcolor[j], sum[1] );
+ COPY_3V( Bspec[j], spec[1] );
+ Bcolor[j][3] = sumA[1];
+#endif
+ }
+}
+
+
+static void TAG(light_rgba)( struct gl_context *ctx,
+ struct vertex_buffer *VB,
+ struct tnl_pipeline_stage *stage,
+ GLvector4f *input )
+{
+ struct light_stage_data *store = LIGHT_STAGE_DATA(stage);
+ GLuint j;
+
+ GLfloat (*base)[3] = ctx->Light._BaseColor;
+ GLfloat sumA[2];
+
+ 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 (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data;
+#if IDX & LIGHT_TWOSIDE
+ GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data;
+#endif
+
+ const GLuint nr = VB->Count;
+
+#ifdef TRACE
+ fprintf(stderr, "%s\n", __FUNCTION__ );
+#endif
+
+ VB->AttribPtr[_TNL_ATTRIB_COLOR0] = &store->LitColor[0];
+ sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+
+#if IDX & LIGHT_TWOSIDE
+ VB->BackfaceColorPtr = &store->LitColor[1];
+ sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+
+ store->LitColor[0].stride = 16;
+ store->LitColor[1].stride = 16;
+
+ for (j = 0; j < nr; j++,STRIDE_F(vertex,vstride),STRIDE_F(normal,nstride)) {
+ GLfloat sum[2][3];
+ struct gl_light *light;
+
+#if IDX & LIGHT_MATERIAL
+ update_materials( ctx, store );
+ sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+#if IDX & LIGHT_TWOSIDE
+ sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+#endif
+
+ COPY_3V(sum[0], base[0]);
+
+#if IDX & LIGHT_TWOSIDE
+ COPY_3V(sum[1], base[1]);
+#endif
+
+ /* Add contribution from each enabled light source */
+ foreach (light, &ctx->Light.EnabledList) {
+
+ GLfloat n_dot_h;
+ GLfloat correction;
+ GLint side;
+ GLfloat contrib[3];
+ GLfloat attenuation = 1.0;
+ GLfloat VP[3]; /* unit vector from vertex to light */
+ GLfloat n_dot_VP; /* n dot VP */
+ GLfloat *h;
+
+ /* compute VP and attenuation */
+ if (!(light->_Flags & LIGHT_POSITIONAL)) {
+ /* directional light */
+ COPY_3V(VP, light->_VP_inf_norm);
+ attenuation = light->_VP_inf_spot_attenuation;
+ }
+ 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 */
+
+ /* Compute dot product or normal and vector from V to light pos */
+ n_dot_VP = DOT3( normal, VP );
+
+ /* which side are we lighting? */
+ if (n_dot_VP < 0.0F) {
+ ACC_SCALE_SCALAR_3V(sum[0], attenuation, light->_MatAmbient[0]);
+#if IDX & LIGHT_TWOSIDE
+ side = 1;
+ correction = -1;
+ n_dot_VP = -n_dot_VP;
+#else
+ continue;
+#endif
+ }
+ else {
+#if IDX & LIGHT_TWOSIDE
+ ACC_SCALE_SCALAR_3V( sum[1], attenuation, light->_MatAmbient[1]);
+#endif
+ side = 0;
+ correction = 1;
+ }
+
+ COPY_3V(contrib, light->_MatAmbient[side]);
+
+ /* diffuse term */
+ ACC_SCALE_SCALAR_3V(contrib, n_dot_VP, light->_MatDiffuse[side]);
+
+ /* specular term - cannibalize VP... */
+ {
+ 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;
+ 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 );
+
+ ACC_SCALE_SCALAR_3V( contrib, spec_coef,
+ light->_MatSpecular[side]);
+ }
+ }
+
+ ACC_SCALE_SCALAR_3V( sum[side], attenuation, contrib );
+ }
+
+ COPY_3V( Fcolor[j], sum[0] );
+ Fcolor[j][3] = sumA[0];
+
+#if IDX & LIGHT_TWOSIDE
+ COPY_3V( Bcolor[j], sum[1] );
+ Bcolor[j][3] = sumA[1];
+#endif
+ }
+}
+
+
+
+
+/* As below, but with just a single light.
+ */
+static void TAG(light_fast_rgba_single)( struct gl_context *ctx,
+ struct vertex_buffer *VB,
+ struct tnl_pipeline_stage *stage,
+ GLvector4f *input )
+
+{
+ struct light_stage_data *store = LIGHT_STAGE_DATA(stage);
+ const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride;
+ const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data;
+ GLfloat (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data;
+#if IDX & LIGHT_TWOSIDE
+ GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data;
+#endif
+ const struct gl_light *light = ctx->Light.EnabledList.next;
+ GLuint j = 0;
+ GLfloat base[2][4];
+#if IDX & LIGHT_MATERIAL
+ const GLuint nr = VB->Count;
+#else
+ const GLuint nr = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->count;
+#endif
+
+#ifdef TRACE
+ fprintf(stderr, "%s\n", __FUNCTION__ );
+#endif
+
+ (void) input; /* doesn't refer to Eye or Obj */
+
+ VB->AttribPtr[_TNL_ATTRIB_COLOR0] = &store->LitColor[0];
+#if IDX & LIGHT_TWOSIDE
+ VB->BackfaceColorPtr = &store->LitColor[1];
+#endif
+
+ if (nr > 1) {
+ store->LitColor[0].stride = 16;
+ store->LitColor[1].stride = 16;
+ }
+ else {
+ store->LitColor[0].stride = 0;
+ store->LitColor[1].stride = 0;
+ }
+
+ for (j = 0; j < nr; j++, STRIDE_F(normal,nstride)) {
+
+ GLfloat n_dot_VP;
+
+#if IDX & LIGHT_MATERIAL
+ update_materials( ctx, store );
+#endif
+
+ /* No attenuation, so incoporate _MatAmbient into base color.
+ */
+#if !(IDX & LIGHT_MATERIAL)
+ if ( j == 0 )
+#endif
+ {
+ COPY_3V(base[0], light->_MatAmbient[0]);
+ ACC_3V(base[0], ctx->Light._BaseColor[0] );
+ base[0][3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+
+#if IDX & LIGHT_TWOSIDE
+ COPY_3V(base[1], light->_MatAmbient[1]);
+ ACC_3V(base[1], ctx->Light._BaseColor[1]);
+ base[1][3] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+ }
+
+ n_dot_VP = DOT3(normal, light->_VP_inf_norm);
+
+ if (n_dot_VP < 0.0F) {
+#if IDX & LIGHT_TWOSIDE
+ GLfloat n_dot_h = -DOT3(normal, light->_h_inf_norm);
+ GLfloat sum[3];
+ COPY_3V(sum, base[1]);
+ ACC_SCALE_SCALAR_3V(sum, -n_dot_VP, light->_MatDiffuse[1]);
+ if (n_dot_h > 0.0F) {
+ GLfloat spec;
+ GET_SHINE_TAB_ENTRY( ctx->_ShineTable[1], n_dot_h, spec );
+ ACC_SCALE_SCALAR_3V(sum, spec, light->_MatSpecular[1]);
+ }
+ COPY_3V(Bcolor[j], sum );
+ Bcolor[j][3] = base[1][3];
+#endif
+ COPY_4FV(Fcolor[j], base[0]);
+ }
+ else {
+ GLfloat n_dot_h = DOT3(normal, light->_h_inf_norm);
+ GLfloat sum[3];
+ COPY_3V(sum, base[0]);
+ ACC_SCALE_SCALAR_3V(sum, n_dot_VP, light->_MatDiffuse[0]);
+ if (n_dot_h > 0.0F) {
+ GLfloat spec;
+ GET_SHINE_TAB_ENTRY( ctx->_ShineTable[0], n_dot_h, spec );
+ ACC_SCALE_SCALAR_3V(sum, spec, light->_MatSpecular[0]);
+
+ }
+ COPY_3V(Fcolor[j], sum );
+ Fcolor[j][3] = base[0][3];
+#if IDX & LIGHT_TWOSIDE
+ COPY_4FV(Bcolor[j], base[1]);
+#endif
+ }
+ }
+}
+
+
+/* Light infinite lights
+ */
+static void TAG(light_fast_rgba)( struct gl_context *ctx,
+ struct vertex_buffer *VB,
+ struct tnl_pipeline_stage *stage,
+ GLvector4f *input )
+{
+ struct light_stage_data *store = LIGHT_STAGE_DATA(stage);
+ GLfloat sumA[2];
+ const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride;
+ const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data;
+ GLfloat (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data;
+#if IDX & LIGHT_TWOSIDE
+ GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data;
+#endif
+ GLuint j = 0;
+#if IDX & LIGHT_MATERIAL
+ const GLuint nr = VB->Count;
+#else
+ const GLuint nr = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->count;
+#endif
+ const struct gl_light *light;
+
+#ifdef TRACE
+ fprintf(stderr, "%s %d\n", __FUNCTION__, nr );
+#endif
+
+ (void) input;
+
+ sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+ sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+
+ VB->AttribPtr[_TNL_ATTRIB_COLOR0] = &store->LitColor[0];
+#if IDX & LIGHT_TWOSIDE
+ VB->BackfaceColorPtr = &store->LitColor[1];
+#endif
+
+ if (nr > 1) {
+ store->LitColor[0].stride = 16;
+ store->LitColor[1].stride = 16;
+ }
+ else {
+ store->LitColor[0].stride = 0;
+ store->LitColor[1].stride = 0;
+ }
+
+ for (j = 0; j < nr; j++, STRIDE_F(normal,nstride)) {
+
+ GLfloat sum[2][3];
+
+#if IDX & LIGHT_MATERIAL
+ update_materials( ctx, store );
+
+ sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+#if IDX & LIGHT_TWOSIDE
+ sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+#endif
+
+
+ COPY_3V(sum[0], ctx->Light._BaseColor[0]);
+#if IDX & LIGHT_TWOSIDE
+ COPY_3V(sum[1], ctx->Light._BaseColor[1]);
+#endif
+
+ foreach (light, &ctx->Light.EnabledList) {
+ GLfloat n_dot_h, n_dot_VP, spec;
+
+ ACC_3V(sum[0], light->_MatAmbient[0]);
+#if IDX & LIGHT_TWOSIDE
+ ACC_3V(sum[1], light->_MatAmbient[1]);
+#endif
+
+ n_dot_VP = DOT3(normal, light->_VP_inf_norm);
+
+ if (n_dot_VP > 0.0F) {
+ ACC_SCALE_SCALAR_3V(sum[0], n_dot_VP, light->_MatDiffuse[0]);
+ n_dot_h = DOT3(normal, light->_h_inf_norm);
+ if (n_dot_h > 0.0F) {
+ struct gl_shine_tab *tab = ctx->_ShineTable[0];
+ GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec );
+ ACC_SCALE_SCALAR_3V( sum[0], spec, light->_MatSpecular[0]);
+ }
+ }
+#if IDX & LIGHT_TWOSIDE
+ else {
+ ACC_SCALE_SCALAR_3V(sum[1], -n_dot_VP, light->_MatDiffuse[1]);
+ n_dot_h = -DOT3(normal, light->_h_inf_norm);
+ if (n_dot_h > 0.0F) {
+ struct gl_shine_tab *tab = ctx->_ShineTable[1];
+ GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec );
+ ACC_SCALE_SCALAR_3V( sum[1], spec, light->_MatSpecular[1]);
+ }
+ }
+#endif
+ }
+
+ COPY_3V( Fcolor[j], sum[0] );
+ Fcolor[j][3] = sumA[0];
+
+#if IDX & LIGHT_TWOSIDE
+ COPY_3V( Bcolor[j], sum[1] );
+ Bcolor[j][3] = sumA[1];
+#endif
+ }
+}
+
+
+
+
+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);
+}
+
+
+#undef TAG
+#undef IDX
+#undef NR_SIDES
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