| 0,0 → 1,631 |
|---|
| /* |
| * Mesa 3-D graphics library |
| * |
| * 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 |
| * THE AUTHORS OR COPYRIGHT HOLDERS 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 { |
| GLfloat spot = powf(PV_dot_dir, light->SpotExponent); |
| 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 = lookup_shininess(ctx, side, n_dot_h); |
| 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 { |
| GLfloat spot = powf(PV_dot_dir, light->SpotExponent); |
| 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 = lookup_shininess(ctx, side, n_dot_h); |
| 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 = lookup_shininess(ctx, 1, n_dot_h); |
| 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 = lookup_shininess(ctx, 0, n_dot_h); |
| 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) { |
| spec = lookup_shininess(ctx, 0, n_dot_h); |
| 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) { |
| spec = lookup_shininess(ctx, 1, n_dot_h); |
| 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 |