-/* $Id: light.c,v 1.49 2002/02/13 00:53:19 keithw Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 7.0
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2007 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"),
*/
-#ifdef PC_HEADER
-#include "all.h"
-#else
#include "glheader.h"
-#include "colormac.h"
+#include "imports.h"
#include "context.h"
#include "enums.h"
#include "light.h"
#include "macros.h"
-#include "mem.h"
-#include "mmath.h"
#include "simple_list.h"
#include "mtypes.h"
-
-#include "math/m_xform.h"
#include "math/m_matrix.h"
-#endif
-
-/* XXX this is a bit of a hack needed for compilation within XFree86 */
-#ifndef FLT_MIN
-#define FLT_MIN 1e-37
-#endif
-
-void
+void GLAPIENTRY
_mesa_ShadeModel( GLenum mode )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE & VERBOSE_API)
- fprintf(stderr, "glShadeModel %s\n", _mesa_lookup_enum_by_nr(mode));
+ _mesa_debug(ctx, "glShadeModel %s\n", _mesa_lookup_enum_by_nr(mode));
if (mode != GL_FLAT && mode != GL_SMOOTH) {
- _mesa_error( ctx, GL_INVALID_ENUM, "glShadeModel" );
+ _mesa_error(ctx, GL_INVALID_ENUM, "glShadeModel");
return;
}
FLUSH_VERTICES(ctx, _NEW_LIGHT);
ctx->Light.ShadeModel = mode;
- ctx->_TriangleCaps ^= DD_FLATSHADE;
+ if (mode == GL_FLAT)
+ ctx->_TriangleCaps |= DD_FLATSHADE;
+ else
+ ctx->_TriangleCaps &= ~DD_FLATSHADE;
+
if (ctx->Driver.ShadeModel)
- (*ctx->Driver.ShadeModel)( ctx, mode );
+ ctx->Driver.ShadeModel( ctx, mode );
}
-
+/**
+ * Helper function called by _mesa_Lightfv and _mesa_PopAttrib to set
+ * per-light state.
+ * For GL_POSITION and GL_SPOT_DIRECTION the params position/direction
+ * will have already been transformed by the modelview matrix!
+ * Also, all error checking should have already been done.
+ */
void
+_mesa_light(GLcontext *ctx, GLuint lnum, GLenum pname, const GLfloat *params)
+{
+ struct gl_light *light;
+
+ ASSERT(lnum < MAX_LIGHTS);
+ light = &ctx->Light.Light[lnum];
+
+ switch (pname) {
+ case GL_AMBIENT:
+ if (TEST_EQ_4V(light->Ambient, params))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ COPY_4V( light->Ambient, params );
+ break;
+ case GL_DIFFUSE:
+ if (TEST_EQ_4V(light->Diffuse, params))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ COPY_4V( light->Diffuse, params );
+ break;
+ case GL_SPECULAR:
+ if (TEST_EQ_4V(light->Specular, params))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ COPY_4V( light->Specular, params );
+ break;
+ case GL_POSITION:
+ /* NOTE: position has already been transformed by ModelView! */
+ if (TEST_EQ_4V(light->EyePosition, params))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ COPY_4V(light->EyePosition, params);
+ if (light->EyePosition[3] != 0.0F)
+ light->_Flags |= LIGHT_POSITIONAL;
+ else
+ light->_Flags &= ~LIGHT_POSITIONAL;
+ break;
+ case GL_SPOT_DIRECTION:
+ /* NOTE: Direction already transformed by inverse ModelView! */
+ if (TEST_EQ_3V(light->EyeDirection, params))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ COPY_3V(light->EyeDirection, params);
+ break;
+ case GL_SPOT_EXPONENT:
+ ASSERT(params[0] >= 0.0);
+ ASSERT(params[0] <= ctx->Const.MaxSpotExponent);
+ if (light->SpotExponent == params[0])
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ light->SpotExponent = params[0];
+ _mesa_invalidate_spot_exp_table(light);
+ break;
+ case GL_SPOT_CUTOFF:
+ ASSERT(params[0] == 180.0 || (params[0] >= 0.0 && params[0] <= 90.0));
+ if (light->SpotCutoff == params[0])
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ light->SpotCutoff = params[0];
+ light->_CosCutoffNeg = (GLfloat) (_mesa_cos(light->SpotCutoff * DEG2RAD));
+ if (light->_CosCutoffNeg < 0)
+ light->_CosCutoff = 0;
+ else
+ light->_CosCutoff = light->_CosCutoffNeg;
+ if (light->SpotCutoff != 180.0F)
+ light->_Flags |= LIGHT_SPOT;
+ else
+ light->_Flags &= ~LIGHT_SPOT;
+ break;
+ case GL_CONSTANT_ATTENUATION:
+ ASSERT(params[0] >= 0.0);
+ if (light->ConstantAttenuation == params[0])
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ light->ConstantAttenuation = params[0];
+ break;
+ case GL_LINEAR_ATTENUATION:
+ ASSERT(params[0] >= 0.0);
+ if (light->LinearAttenuation == params[0])
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ light->LinearAttenuation = params[0];
+ break;
+ case GL_QUADRATIC_ATTENUATION:
+ ASSERT(params[0] >= 0.0);
+ if (light->QuadraticAttenuation == params[0])
+ return;
+ FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ light->QuadraticAttenuation = params[0];
+ break;
+ default:
+ _mesa_problem(ctx, "Unexpected pname in _mesa_light()");
+ return;
+ }
+
+ if (ctx->Driver.Lightfv)
+ ctx->Driver.Lightfv( ctx, GL_LIGHT0 + lnum, pname, params );
+}
+
+
+void GLAPIENTRY
_mesa_Lightf( GLenum light, GLenum pname, GLfloat param )
{
_mesa_Lightfv( light, pname, ¶m );
}
-void
+void GLAPIENTRY
_mesa_Lightfv( GLenum light, GLenum pname, const GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
GLint i = (GLint) (light - GL_LIGHT0);
- struct gl_light *l = &ctx->Light.Light[i];
+ GLfloat temp[4];
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
if (i < 0 || i >= (GLint) ctx->Const.MaxLights) {
- _mesa_error( ctx, GL_INVALID_ENUM, "glLight" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glLight(light=0x%x)", light );
return;
}
+ /* do particular error checks, transformations */
switch (pname) {
case GL_AMBIENT:
- if (TEST_EQ_4V(l->Ambient, params))
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- COPY_4V( l->Ambient, params );
- break;
case GL_DIFFUSE:
- if (TEST_EQ_4V(l->Diffuse, params))
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- COPY_4V( l->Diffuse, params );
- break;
case GL_SPECULAR:
- if (TEST_EQ_4V(l->Specular, params))
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- COPY_4V( l->Specular, params );
+ /* nothing */
break;
- case GL_POSITION: {
- GLfloat tmp[4];
+ case GL_POSITION:
/* transform position by ModelView matrix */
- TRANSFORM_POINT( tmp, ctx->ModelviewMatrixStack.Top->m, params );
- if (TEST_EQ_4V(l->EyePosition, tmp))
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- COPY_4V(l->EyePosition, tmp);
- if (l->EyePosition[3] != 0.0F)
- l->_Flags |= LIGHT_POSITIONAL;
- else
- l->_Flags &= ~LIGHT_POSITIONAL;
+ TRANSFORM_POINT(temp, ctx->ModelviewMatrixStack.Top->m, params);
+ params = temp;
break;
- }
- case GL_SPOT_DIRECTION: {
- GLfloat tmp[4];
+ case GL_SPOT_DIRECTION:
/* transform direction by inverse modelview */
- if (ctx->ModelviewMatrixStack.Top->flags & MAT_DIRTY_INVERSE) {
- _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
+ _math_matrix_analyse(ctx->ModelviewMatrixStack.Top);
}
- TRANSFORM_NORMAL( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
- if (TEST_EQ_3V(l->EyeDirection, tmp))
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- COPY_3V(l->EyeDirection, tmp);
+ TRANSFORM_DIRECTION(temp, params, ctx->ModelviewMatrixStack.Top->m);
+ NORMALIZE_3FV(temp);
+ params = temp;
break;
- }
case GL_SPOT_EXPONENT:
- if (params[0]<0.0 || params[0]>128.0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
+ if (params[0] < 0.0 || params[0] > ctx->Const.MaxSpotExponent) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
return;
}
- if (l->SpotExponent == params[0])
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- l->SpotExponent = params[0];
- _mesa_invalidate_spot_exp_table( l );
break;
case GL_SPOT_CUTOFF:
- if ((params[0]<0.0 || params[0]>90.0) && params[0]!=180.0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
+ if ((params[0] < 0.0 || params[0] > 90.0) && params[0] != 180.0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
return;
}
- if (l->SpotCutoff == params[0])
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- l->SpotCutoff = params[0];
- l->_CosCutoff = (GLfloat) cos(params[0]*DEG2RAD);
- if (l->_CosCutoff < 0)
- l->_CosCutoff = 0;
- if (l->SpotCutoff != 180.0F)
- l->_Flags |= LIGHT_SPOT;
- else
- l->_Flags &= ~LIGHT_SPOT;
break;
case GL_CONSTANT_ATTENUATION:
- if (params[0]<0.0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
+ if (params[0] < 0.0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
return;
}
- if (l->ConstantAttenuation == params[0])
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- l->ConstantAttenuation = params[0];
break;
case GL_LINEAR_ATTENUATION:
- if (params[0]<0.0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
+ if (params[0] < 0.0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
return;
}
- if (l->LinearAttenuation == params[0])
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- l->LinearAttenuation = params[0];
break;
case GL_QUADRATIC_ATTENUATION:
- if (params[0]<0.0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
+ if (params[0] < 0.0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
return;
}
- if (l->QuadraticAttenuation == params[0])
- return;
- FLUSH_VERTICES(ctx, _NEW_LIGHT);
- l->QuadraticAttenuation = params[0];
break;
default:
- _mesa_error( ctx, GL_INVALID_ENUM, "glLight" );
+ _mesa_error(ctx, GL_INVALID_ENUM, "glLight(pname=0x%x)", pname);
return;
}
- if (ctx->Driver.Lightfv)
- ctx->Driver.Lightfv( ctx, light, pname, params );
+ _mesa_light(ctx, i, pname, params);
}
-void
+void GLAPIENTRY
_mesa_Lighti( GLenum light, GLenum pname, GLint param )
{
_mesa_Lightiv( light, pname, ¶m );
}
-void
+void GLAPIENTRY
_mesa_Lightiv( GLenum light, GLenum pname, const GLint *params )
{
GLfloat fparam[4];
-void
+void GLAPIENTRY
_mesa_GetLightfv( GLenum light, GLenum pname, GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
}
-
-void
+void GLAPIENTRY
_mesa_GetLightiv( GLenum light, GLenum pname, GLint *params )
{
GET_CURRENT_CONTEXT(ctx);
/**********************************************************************/
-void
+void GLAPIENTRY
_mesa_LightModelfv( GLenum pname, const GLfloat *params )
{
GLenum newenum;
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
ctx->Light.Model.TwoSide = newbool;
-
- if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
- ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;
- else
- ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;
+ if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
+ ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;
+ else
+ ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;
break;
case GL_LIGHT_MODEL_COLOR_CONTROL:
if (params[0] == (GLfloat) GL_SINGLE_COLOR)
else if (params[0] == (GLfloat) GL_SEPARATE_SPECULAR_COLOR)
newenum = GL_SEPARATE_SPECULAR_COLOR;
else {
- _mesa_error( ctx, GL_INVALID_ENUM, "glLightModel(param)" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glLightModel(param=0x0%x)",
+ (GLint) params[0] );
return;
}
if (ctx->Light.Model.ColorControl == newenum)
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
ctx->Light.Model.ColorControl = newenum;
-
- if ((ctx->Light.Enabled &&
- ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR)
- || ctx->Fog.ColorSumEnabled)
- ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
- else
- ctx->_TriangleCaps &= ~DD_SEPARATE_SPECULAR;
-
break;
default:
- _mesa_error( ctx, GL_INVALID_ENUM, "glLightModel" );
+ _mesa_error( ctx, GL_INVALID_ENUM, "glLightModel(pname=0x%x)", pname );
break;
}
}
-void
+void GLAPIENTRY
_mesa_LightModeliv( GLenum pname, const GLint *params )
{
GLfloat fparam[4];
}
-void
+void GLAPIENTRY
_mesa_LightModeli( GLenum pname, GLint param )
{
_mesa_LightModeliv( pname, ¶m );
}
-void
+void GLAPIENTRY
_mesa_LightModelf( GLenum pname, GLfloat param )
{
_mesa_LightModelfv( pname, ¶m );
/* Make a bitmask indicating what material attribute(s) we're updating */
switch (pname) {
case GL_EMISSION:
- bitmask |= FRONT_EMISSION_BIT | BACK_EMISSION_BIT;
+ bitmask |= MAT_BIT_FRONT_EMISSION | MAT_BIT_BACK_EMISSION;
break;
case GL_AMBIENT:
- bitmask |= FRONT_AMBIENT_BIT | BACK_AMBIENT_BIT;
+ bitmask |= MAT_BIT_FRONT_AMBIENT | MAT_BIT_BACK_AMBIENT;
break;
case GL_DIFFUSE:
- bitmask |= FRONT_DIFFUSE_BIT | BACK_DIFFUSE_BIT;
+ bitmask |= MAT_BIT_FRONT_DIFFUSE | MAT_BIT_BACK_DIFFUSE;
break;
case GL_SPECULAR:
- bitmask |= FRONT_SPECULAR_BIT | BACK_SPECULAR_BIT;
+ bitmask |= MAT_BIT_FRONT_SPECULAR | MAT_BIT_BACK_SPECULAR;
break;
case GL_SHININESS:
- bitmask |= FRONT_SHININESS_BIT | BACK_SHININESS_BIT;
+ bitmask |= MAT_BIT_FRONT_SHININESS | MAT_BIT_BACK_SHININESS;
break;
case GL_AMBIENT_AND_DIFFUSE:
- bitmask |= FRONT_AMBIENT_BIT | BACK_AMBIENT_BIT;
- bitmask |= FRONT_DIFFUSE_BIT | BACK_DIFFUSE_BIT;
+ bitmask |= MAT_BIT_FRONT_AMBIENT | MAT_BIT_BACK_AMBIENT;
+ bitmask |= MAT_BIT_FRONT_DIFFUSE | MAT_BIT_BACK_DIFFUSE;
break;
case GL_COLOR_INDEXES:
- bitmask |= FRONT_INDEXES_BIT | BACK_INDEXES_BIT;
+ bitmask |= MAT_BIT_FRONT_INDEXES | MAT_BIT_BACK_INDEXES;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, where );
}
-/* Perform a straight copy between pairs of materials.
+
+/* Perform a straight copy between materials.
*/
-void _mesa_copy_material_pairs( struct gl_material dst[2],
- const struct gl_material src[2],
- GLuint bitmask )
+void
+_mesa_copy_materials( struct gl_material *dst,
+ const struct gl_material *src,
+ GLuint bitmask )
{
- if (bitmask & FRONT_EMISSION_BIT) {
- COPY_4FV( dst[0].Emission, src[0].Emission );
- }
- if (bitmask & BACK_EMISSION_BIT) {
- COPY_4FV( dst[1].Emission, src[1].Emission );
- }
- if (bitmask & FRONT_AMBIENT_BIT) {
- COPY_4FV( dst[0].Ambient, src[0].Ambient );
- }
- if (bitmask & BACK_AMBIENT_BIT) {
- COPY_4FV( dst[1].Ambient, src[1].Ambient );
- }
- if (bitmask & FRONT_DIFFUSE_BIT) {
- COPY_4FV( dst[0].Diffuse, src[0].Diffuse );
- }
- if (bitmask & BACK_DIFFUSE_BIT) {
- COPY_4FV( dst[1].Diffuse, src[1].Diffuse );
- }
- if (bitmask & FRONT_SPECULAR_BIT) {
- COPY_4FV( dst[0].Specular, src[0].Specular );
- }
- if (bitmask & BACK_SPECULAR_BIT) {
- COPY_4FV( dst[1].Specular, src[1].Specular );
- }
- if (bitmask & FRONT_SHININESS_BIT) {
- dst[0].Shininess = src[0].Shininess;
- }
- if (bitmask & BACK_SHININESS_BIT) {
- dst[1].Shininess = src[1].Shininess;
- }
- if (bitmask & FRONT_INDEXES_BIT) {
- dst[0].AmbientIndex = src[0].AmbientIndex;
- dst[0].DiffuseIndex = src[0].DiffuseIndex;
- dst[0].SpecularIndex = src[0].SpecularIndex;
- }
- if (bitmask & BACK_INDEXES_BIT) {
- dst[1].AmbientIndex = src[1].AmbientIndex;
- dst[1].DiffuseIndex = src[1].DiffuseIndex;
- dst[1].SpecularIndex = src[1].SpecularIndex;
- }
+ int i;
+
+ for (i = 0 ; i < MAT_ATTRIB_MAX ; i++)
+ if (bitmask & (1<<i))
+ COPY_4FV( dst->Attrib[i], src->Attrib[i] );
}
-/*
- * Check if the global material has to be updated with info that was
- * associated with a vertex via glMaterial.
- * This function is used when any material values get changed between
- * glBegin/glEnd either by calling glMaterial() or by calling glColor()
- * when GL_COLOR_MATERIAL is enabled.
- *
- * src[0] is front material, src[1] is back material
- *
- * Additionally keeps the precomputed lighting state uptodate.
+
+/* Update derived values following a change in ctx->Light.Material
*/
-void _mesa_update_material( GLcontext *ctx,
- const struct gl_material src[2],
- GLuint bitmask )
+void
+_mesa_update_material( GLcontext *ctx, GLuint bitmask )
{
struct gl_light *light, *list = &ctx->Light.EnabledList;
+ GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
- if (ctx->Light.ColorMaterialEnabled)
- bitmask &= ~ctx->Light.ColorMaterialBitmask;
-
- if (MESA_VERBOSE&VERBOSE_IMMEDIATE)
- fprintf(stderr, "_mesa_update_material, mask 0x%x\n", bitmask);
+ if (MESA_VERBOSE&VERBOSE_IMMEDIATE)
+ _mesa_debug(ctx, "_mesa_update_material, mask 0x%x\n", bitmask);
if (!bitmask)
return;
- /* update material emission */
- if (bitmask & FRONT_EMISSION_BIT) {
- struct gl_material *mat = &ctx->Light.Material[0];
- COPY_4FV( mat->Emission, src[0].Emission );
- }
- if (bitmask & BACK_EMISSION_BIT) {
- struct gl_material *mat = &ctx->Light.Material[1];
- COPY_4FV( mat->Emission, src[1].Emission );
- }
-
/* update material ambience */
- if (bitmask & FRONT_AMBIENT_BIT) {
- struct gl_material *mat = &ctx->Light.Material[0];
- COPY_4FV( mat->Ambient, src[0].Ambient );
+ if (bitmask & MAT_BIT_FRONT_AMBIENT) {
foreach (light, list) {
- SCALE_3V( light->_MatAmbient[0], light->Ambient, src[0].Ambient);
+ SCALE_3V( light->_MatAmbient[0], light->Ambient,
+ mat[MAT_ATTRIB_FRONT_AMBIENT]);
}
}
- if (bitmask & BACK_AMBIENT_BIT) {
- struct gl_material *mat = &ctx->Light.Material[1];
- COPY_4FV( mat->Ambient, src[1].Ambient );
+
+ if (bitmask & MAT_BIT_BACK_AMBIENT) {
foreach (light, list) {
- SCALE_3V( light->_MatAmbient[1], light->Ambient, src[1].Ambient);
+ SCALE_3V( light->_MatAmbient[1], light->Ambient,
+ mat[MAT_ATTRIB_BACK_AMBIENT]);
}
}
/* update BaseColor = emission + scene's ambience * material's ambience */
- if (bitmask & (FRONT_EMISSION_BIT | FRONT_AMBIENT_BIT)) {
- struct gl_material *mat = &ctx->Light.Material[0];
- COPY_3V( ctx->Light._BaseColor[0], mat->Emission );
- ACC_SCALE_3V( ctx->Light._BaseColor[0], mat->Ambient,
+ if (bitmask & (MAT_BIT_FRONT_EMISSION | MAT_BIT_FRONT_AMBIENT)) {
+ COPY_3V( ctx->Light._BaseColor[0], mat[MAT_ATTRIB_FRONT_EMISSION] );
+ ACC_SCALE_3V( ctx->Light._BaseColor[0], mat[MAT_ATTRIB_FRONT_AMBIENT],
ctx->Light.Model.Ambient );
}
- if (bitmask & (BACK_EMISSION_BIT | BACK_AMBIENT_BIT)) {
- struct gl_material *mat = &ctx->Light.Material[1];
- COPY_3V( ctx->Light._BaseColor[1], mat->Emission );
- ACC_SCALE_3V( ctx->Light._BaseColor[1], mat->Ambient,
+
+ if (bitmask & (MAT_BIT_BACK_EMISSION | MAT_BIT_BACK_AMBIENT)) {
+ COPY_3V( ctx->Light._BaseColor[1], mat[MAT_ATTRIB_BACK_EMISSION] );
+ ACC_SCALE_3V( ctx->Light._BaseColor[1], mat[MAT_ATTRIB_BACK_AMBIENT],
ctx->Light.Model.Ambient );
}
/* update material diffuse values */
- if (bitmask & FRONT_DIFFUSE_BIT) {
- struct gl_material *mat = &ctx->Light.Material[0];
- COPY_4FV( mat->Diffuse, src[0].Diffuse );
+ if (bitmask & MAT_BIT_FRONT_DIFFUSE) {
foreach (light, list) {
- SCALE_3V( light->_MatDiffuse[0], light->Diffuse, mat->Diffuse );
+ SCALE_3V( light->_MatDiffuse[0], light->Diffuse,
+ mat[MAT_ATTRIB_FRONT_DIFFUSE] );
}
}
- if (bitmask & BACK_DIFFUSE_BIT) {
- struct gl_material *mat = &ctx->Light.Material[1];
- COPY_4FV( mat->Diffuse, src[1].Diffuse );
+
+ if (bitmask & MAT_BIT_BACK_DIFFUSE) {
foreach (light, list) {
- SCALE_3V( light->_MatDiffuse[1], light->Diffuse, mat->Diffuse );
+ SCALE_3V( light->_MatDiffuse[1], light->Diffuse,
+ mat[MAT_ATTRIB_BACK_DIFFUSE] );
}
}
/* update material specular values */
- if (bitmask & FRONT_SPECULAR_BIT) {
- struct gl_material *mat = &ctx->Light.Material[0];
- COPY_4FV( mat->Specular, src[0].Specular );
+ if (bitmask & MAT_BIT_FRONT_SPECULAR) {
foreach (light, list) {
- SCALE_3V( light->_MatSpecular[0], light->Specular, mat->Specular);
+ SCALE_3V( light->_MatSpecular[0], light->Specular,
+ mat[MAT_ATTRIB_FRONT_SPECULAR]);
}
}
- if (bitmask & BACK_SPECULAR_BIT) {
- struct gl_material *mat = &ctx->Light.Material[1];
- COPY_4FV( mat->Specular, src[1].Specular );
+
+ if (bitmask & MAT_BIT_BACK_SPECULAR) {
foreach (light, list) {
- SCALE_3V( light->_MatSpecular[1], light->Specular, mat->Specular);
+ SCALE_3V( light->_MatSpecular[1], light->Specular,
+ mat[MAT_ATTRIB_BACK_SPECULAR]);
}
}
- if (bitmask & FRONT_SHININESS_BIT) {
- ctx->Light.Material[0].Shininess = src[0].Shininess;
+ if (bitmask & MAT_BIT_FRONT_SHININESS) {
_mesa_invalidate_shine_table( ctx, 0 );
}
- if (bitmask & BACK_SHININESS_BIT) {
- ctx->Light.Material[1].Shininess = src[1].Shininess;
- _mesa_invalidate_shine_table( ctx, 1 );
- }
- if (bitmask & FRONT_INDEXES_BIT) {
- ctx->Light.Material[0].AmbientIndex = src[0].AmbientIndex;
- ctx->Light.Material[0].DiffuseIndex = src[0].DiffuseIndex;
- ctx->Light.Material[0].SpecularIndex = src[0].SpecularIndex;
- }
- if (bitmask & BACK_INDEXES_BIT) {
- ctx->Light.Material[1].AmbientIndex = src[1].AmbientIndex;
- ctx->Light.Material[1].DiffuseIndex = src[1].DiffuseIndex;
- ctx->Light.Material[1].SpecularIndex = src[1].SpecularIndex;
- }
-
- if (0)
- {
- struct gl_material *mat = &ctx->Light.Material[0];
- fprintf(stderr, "update_mat emission : %f %f %f\n",
- mat->Emission[0],
- mat->Emission[1],
- mat->Emission[2]);
- fprintf(stderr, "update_mat specular : %f %f %f\n",
- mat->Specular[0],
- mat->Specular[1],
- mat->Specular[2]);
- fprintf(stderr, "update_mat diffuse : %f %f %f\n",
- mat->Diffuse[0],
- mat->Diffuse[1],
- mat->Diffuse[2]);
- fprintf(stderr, "update_mat ambient : %f %f %f\n",
- mat->Ambient[0],
- mat->Ambient[1],
- mat->Ambient[2]);
+ if (bitmask & MAT_BIT_BACK_SHININESS) {
+ _mesa_invalidate_shine_table( ctx, 1 );
}
}
-
-
-
-
-
/*
* Update the current materials from the given rgba color
* according to the bitmask in ColorMaterialBitmask, which is
* set by glColorMaterial().
*/
-void _mesa_update_color_material( GLcontext *ctx,
- const GLfloat color[4] )
+void
+_mesa_update_color_material( GLcontext *ctx, const GLfloat color[4] )
{
- struct gl_light *light, *list = &ctx->Light.EnabledList;
GLuint bitmask = ctx->Light.ColorMaterialBitmask;
+ struct gl_material *mat = &ctx->Light.Material;
+ int i;
- if (MESA_VERBOSE&VERBOSE_IMMEDIATE)
- fprintf(stderr, "_mesa_update_color_material, mask 0x%x\n", bitmask);
-
- /* update emissive colors */
- if (bitmask & FRONT_EMISSION_BIT) {
- struct gl_material *mat = &ctx->Light.Material[0];
- COPY_4FV( mat->Emission, color );
- }
-
- if (bitmask & BACK_EMISSION_BIT) {
- struct gl_material *mat = &ctx->Light.Material[1];
- COPY_4FV( mat->Emission, color );
- }
-
- /* update light->_MatAmbient = light's ambient * material's ambient */
- if (bitmask & FRONT_AMBIENT_BIT) {
- struct gl_material *mat = &ctx->Light.Material[0];
- foreach (light, list) {
- SCALE_3V( light->_MatAmbient[0], light->Ambient, color);
- }
- COPY_4FV( mat->Ambient, color );
- }
-
- if (bitmask & BACK_AMBIENT_BIT) {
- struct gl_material *mat = &ctx->Light.Material[1];
- foreach (light, list) {
- SCALE_3V( light->_MatAmbient[1], light->Ambient, color);
- }
- COPY_4FV( mat->Ambient, color );
- }
-
- /* update BaseColor = emission + scene's ambience * material's ambience */
- if (bitmask & (FRONT_EMISSION_BIT | FRONT_AMBIENT_BIT)) {
- struct gl_material *mat = &ctx->Light.Material[0];
- COPY_3V( ctx->Light._BaseColor[0], mat->Emission );
- ACC_SCALE_3V( ctx->Light._BaseColor[0], mat->Ambient, ctx->Light.Model.Ambient );
- }
-
- if (bitmask & (BACK_EMISSION_BIT | BACK_AMBIENT_BIT)) {
- struct gl_material *mat = &ctx->Light.Material[1];
- COPY_3V( ctx->Light._BaseColor[1], mat->Emission );
- ACC_SCALE_3V( ctx->Light._BaseColor[1], mat->Ambient, ctx->Light.Model.Ambient );
- }
-
- /* update light->_MatDiffuse = light's diffuse * material's diffuse */
- if (bitmask & FRONT_DIFFUSE_BIT) {
- struct gl_material *mat = &ctx->Light.Material[0];
- COPY_4FV( mat->Diffuse, color );
- foreach (light, list) {
- SCALE_3V( light->_MatDiffuse[0], light->Diffuse, mat->Diffuse );
- }
- }
-
- if (bitmask & BACK_DIFFUSE_BIT) {
- struct gl_material *mat = &ctx->Light.Material[1];
- COPY_4FV( mat->Diffuse, color );
- foreach (light, list) {
- SCALE_3V( light->_MatDiffuse[1], light->Diffuse, mat->Diffuse );
- }
- }
-
- /* update light->_MatSpecular = light's specular * material's specular */
- if (bitmask & FRONT_SPECULAR_BIT) {
- struct gl_material *mat = &ctx->Light.Material[0];
- COPY_4FV( mat->Specular, color );
- foreach (light, list) {
- ACC_SCALE_3V( light->_MatSpecular[0], light->Specular, mat->Specular);
- }
- }
-
- if (bitmask & BACK_SPECULAR_BIT) {
- struct gl_material *mat = &ctx->Light.Material[1];
- COPY_4FV( mat->Specular, color );
- foreach (light, list) {
- ACC_SCALE_3V( light->_MatSpecular[1], light->Specular, mat->Specular);
- }
- }
+ for (i = 0 ; i < MAT_ATTRIB_MAX ; i++)
+ if (bitmask & (1<<i))
+ COPY_4FV( mat->Attrib[i], color );
- if (0)
- {
- struct gl_material *mat = &ctx->Light.Material[0];
- fprintf(stderr, "update_color_mat emission : %f %f %f\n",
- mat->Emission[0],
- mat->Emission[1],
- mat->Emission[2]);
- fprintf(stderr, "update_color_mat specular : %f %f %f\n",
- mat->Specular[0],
- mat->Specular[1],
- mat->Specular[2]);
- fprintf(stderr, "update_color_mat diffuse : %f %f %f\n",
- mat->Diffuse[0],
- mat->Diffuse[1],
- mat->Diffuse[2]);
- fprintf(stderr, "update_color_mat ambient : %f %f %f\n",
- mat->Ambient[0],
- mat->Ambient[1],
- mat->Ambient[2]);
- }
+ _mesa_update_material( ctx, bitmask );
}
-
-
-void
+void GLAPIENTRY
_mesa_ColorMaterial( GLenum face, GLenum mode )
{
GET_CURRENT_CONTEXT(ctx);
GLuint bitmask;
- GLuint legal = (FRONT_EMISSION_BIT | BACK_EMISSION_BIT |
- FRONT_SPECULAR_BIT | BACK_SPECULAR_BIT |
- FRONT_DIFFUSE_BIT | BACK_DIFFUSE_BIT |
- FRONT_AMBIENT_BIT | BACK_AMBIENT_BIT);
+ GLuint legal = (MAT_BIT_FRONT_EMISSION | MAT_BIT_BACK_EMISSION |
+ MAT_BIT_FRONT_SPECULAR | MAT_BIT_BACK_SPECULAR |
+ MAT_BIT_FRONT_DIFFUSE | MAT_BIT_BACK_DIFFUSE |
+ MAT_BIT_FRONT_AMBIENT | MAT_BIT_BACK_AMBIENT);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&VERBOSE_API)
- fprintf(stderr, "glColorMaterial %s %s\n",
- _mesa_lookup_enum_by_nr(face),
- _mesa_lookup_enum_by_nr(mode));
+ _mesa_debug(ctx, "glColorMaterial %s %s\n",
+ _mesa_lookup_enum_by_nr(face),
+ _mesa_lookup_enum_by_nr(mode));
bitmask = _mesa_material_bitmask(ctx, face, mode, legal, "glColorMaterial");
}
if (ctx->Driver.ColorMaterial)
- (*ctx->Driver.ColorMaterial)( ctx, face, mode );
+ ctx->Driver.ColorMaterial( ctx, face, mode );
}
-
-
-
-void
+void GLAPIENTRY
_mesa_GetMaterialfv( GLenum face, GLenum pname, GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
GLuint f;
+ GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* update materials */
+ FLUSH_CURRENT(ctx, 0); /* update ctx->Light.Material from vertex buffer */
+
if (face==GL_FRONT) {
f = 0;
}
_mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialfv(face)" );
return;
}
+
switch (pname) {
case GL_AMBIENT:
- COPY_4FV( params, ctx->Light.Material[f].Ambient );
+ COPY_4FV( params, mat[MAT_ATTRIB_AMBIENT(f)] );
break;
case GL_DIFFUSE:
- COPY_4FV( params, ctx->Light.Material[f].Diffuse );
+ COPY_4FV( params, mat[MAT_ATTRIB_DIFFUSE(f)] );
break;
case GL_SPECULAR:
- COPY_4FV( params, ctx->Light.Material[f].Specular );
+ COPY_4FV( params, mat[MAT_ATTRIB_SPECULAR(f)] );
break;
case GL_EMISSION:
- COPY_4FV( params, ctx->Light.Material[f].Emission );
+ COPY_4FV( params, mat[MAT_ATTRIB_EMISSION(f)] );
break;
case GL_SHININESS:
- *params = ctx->Light.Material[f].Shininess;
+ *params = mat[MAT_ATTRIB_SHININESS(f)][0];
break;
case GL_COLOR_INDEXES:
- params[0] = ctx->Light.Material[f].AmbientIndex;
- params[1] = ctx->Light.Material[f].DiffuseIndex;
- params[2] = ctx->Light.Material[f].SpecularIndex;
+ params[0] = mat[MAT_ATTRIB_INDEXES(f)][0];
+ params[1] = mat[MAT_ATTRIB_INDEXES(f)][1];
+ params[2] = mat[MAT_ATTRIB_INDEXES(f)][2];
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialfv(pname)" );
}
-
-void
+void GLAPIENTRY
_mesa_GetMaterialiv( GLenum face, GLenum pname, GLint *params )
{
GET_CURRENT_CONTEXT(ctx);
GLuint f;
+ GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* update materials */
+ FLUSH_CURRENT(ctx, 0); /* update ctx->Light.Material from vertex buffer */
+
if (face==GL_FRONT) {
f = 0;
}
}
switch (pname) {
case GL_AMBIENT:
- params[0] = FLOAT_TO_INT( ctx->Light.Material[f].Ambient[0] );
- params[1] = FLOAT_TO_INT( ctx->Light.Material[f].Ambient[1] );
- params[2] = FLOAT_TO_INT( ctx->Light.Material[f].Ambient[2] );
- params[3] = FLOAT_TO_INT( ctx->Light.Material[f].Ambient[3] );
+ params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][0] );
+ params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][1] );
+ params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][2] );
+ params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][3] );
break;
case GL_DIFFUSE:
- params[0] = FLOAT_TO_INT( ctx->Light.Material[f].Diffuse[0] );
- params[1] = FLOAT_TO_INT( ctx->Light.Material[f].Diffuse[1] );
- params[2] = FLOAT_TO_INT( ctx->Light.Material[f].Diffuse[2] );
- params[3] = FLOAT_TO_INT( ctx->Light.Material[f].Diffuse[3] );
+ params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][0] );
+ params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][1] );
+ params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][2] );
+ params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][3] );
break;
case GL_SPECULAR:
- params[0] = FLOAT_TO_INT( ctx->Light.Material[f].Specular[0] );
- params[1] = FLOAT_TO_INT( ctx->Light.Material[f].Specular[1] );
- params[2] = FLOAT_TO_INT( ctx->Light.Material[f].Specular[2] );
- params[3] = FLOAT_TO_INT( ctx->Light.Material[f].Specular[3] );
+ params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][0] );
+ params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][1] );
+ params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][2] );
+ params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][3] );
break;
case GL_EMISSION:
- params[0] = FLOAT_TO_INT( ctx->Light.Material[f].Emission[0] );
- params[1] = FLOAT_TO_INT( ctx->Light.Material[f].Emission[1] );
- params[2] = FLOAT_TO_INT( ctx->Light.Material[f].Emission[2] );
- params[3] = FLOAT_TO_INT( ctx->Light.Material[f].Emission[3] );
+ params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][0] );
+ params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][1] );
+ params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][2] );
+ params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][3] );
break;
case GL_SHININESS:
- *params = ROUNDF( ctx->Light.Material[f].Shininess );
+ *params = IROUND( mat[MAT_ATTRIB_SHININESS(f)][0] );
break;
case GL_COLOR_INDEXES:
- params[0] = ROUNDF( ctx->Light.Material[f].AmbientIndex );
- params[1] = ROUNDF( ctx->Light.Material[f].DiffuseIndex );
- params[2] = ROUNDF( ctx->Light.Material[f].SpecularIndex );
+ params[0] = IROUND( mat[MAT_ATTRIB_INDEXES(f)][0] );
+ params[1] = IROUND( mat[MAT_ATTRIB_INDEXES(f)][1] );
+ params[2] = IROUND( mat[MAT_ATTRIB_INDEXES(f)][2] );
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialfv(pname)" );
-
/**********************************************************************/
/***** Lighting computation *****/
/**********************************************************************/
l->_SpotExpTable[0][0] = -1;
}
-static void validate_spot_exp_table( struct gl_light *l )
+
+static void
+validate_spot_exp_table( struct gl_light *l )
{
GLint i;
GLdouble exponent = l->SpotExponent;
for (i = EXP_TABLE_SIZE - 1; i > 0 ;i--) {
if (clamp == 0) {
- tmp = pow(i / (GLdouble) (EXP_TABLE_SIZE - 1), exponent);
+ tmp = _mesa_pow(i / (GLdouble) (EXP_TABLE_SIZE - 1), exponent);
if (tmp < FLT_MIN * 100.0) {
tmp = 0.0;
clamp = 1;
-
/* Calculate a new shine table. Doing this here saves a branch in
* lighting, and the cost of doing it early may be partially offset
* by keeping a MRU cache of shine tables for various shine values.
*/
void
-_mesa_invalidate_shine_table( GLcontext *ctx, GLuint i )
+_mesa_invalidate_shine_table( GLcontext *ctx, GLuint side )
{
- if (ctx->_ShineTable[i])
- ctx->_ShineTable[i]->refcount--;
- ctx->_ShineTable[i] = 0;
+ ASSERT(side < 2);
+ if (ctx->_ShineTable[side])
+ ctx->_ShineTable[side]->refcount--;
+ ctx->_ShineTable[side] = NULL;
}
-static void validate_shine_table( GLcontext *ctx, GLuint i, GLfloat shininess )
+
+static void
+validate_shine_table( GLcontext *ctx, GLuint side, GLfloat shininess )
{
struct gl_shine_tab *list = ctx->_ShineTabList;
struct gl_shine_tab *s;
+ ASSERT(side < 2);
+
foreach(s, list)
if ( s->shininess == shininess )
break;
GLdouble t, x = j / (GLfloat) (SHINE_TABLE_SIZE - 1);
if (x < 0.005) /* underflow check */
x = 0.005;
- t = pow(x, shininess);
+ t = _mesa_pow(x, shininess);
if (t > 1e-20)
m[j] = (GLfloat) t;
else
s->shininess = shininess;
}
- if (ctx->_ShineTable[i])
- ctx->_ShineTable[i]->refcount--;
+ if (ctx->_ShineTable[side])
+ ctx->_ShineTable[side]->refcount--;
- ctx->_ShineTable[i] = s;
+ ctx->_ShineTable[side] = s;
move_to_tail( list, s );
s->refcount++;
}
+
void
_mesa_validate_all_lighting_tables( GLcontext *ctx )
{
- GLint i;
+ GLuint i;
GLfloat shininess;
-
- shininess = ctx->Light.Material[0].Shininess;
+
+ shininess = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0];
if (!ctx->_ShineTable[0] || ctx->_ShineTable[0]->shininess != shininess)
validate_shine_table( ctx, 0, shininess );
- shininess = ctx->Light.Material[1].Shininess;
+ shininess = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][0];
if (!ctx->_ShineTable[1] || ctx->_ShineTable[1]->shininess != shininess)
validate_shine_table( ctx, 1, shininess );
- for (i = 0 ; i < MAX_LIGHTS ; i++)
+ for (i = 0; i < ctx->Const.MaxLights; i++)
if (ctx->Light.Light[i]._SpotExpTable[0][0] == -1)
validate_spot_exp_table( &ctx->Light.Light[i] );
}
-
-
-/*
+/**
* Examine current lighting parameters to determine if the optimized lighting
* function can be used.
* Also, precompute some lighting values such as the products of light
_mesa_update_lighting( GLcontext *ctx )
{
struct gl_light *light;
- ctx->_NeedEyeCoords &= ~NEED_EYE_LIGHT;
- ctx->_NeedNormals &= ~NEED_NORMALS_LIGHT;
+ ctx->Light._NeedEyeCoords = GL_FALSE;
ctx->Light._Flags = 0;
if (!ctx->Light.Enabled)
return;
- ctx->_NeedNormals |= NEED_NORMALS_LIGHT;
-
foreach(light, &ctx->Light.EnabledList) {
ctx->Light._Flags |= light->_Flags;
}
ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR ||
ctx->Light.Model.LocalViewer);
- if ((ctx->Light._Flags & LIGHT_POSITIONAL) ||
- ctx->Light.Model.LocalViewer)
- ctx->_NeedEyeCoords |= NEED_EYE_LIGHT;
-
+ ctx->Light._NeedEyeCoords = ((ctx->Light._Flags & LIGHT_POSITIONAL) ||
+ ctx->Light.Model.LocalViewer);
/* XXX: This test is overkill & needs to be fixed both for software and
* hardware t&l drivers. The above should be sufficient & should
* be tested to verify this.
*/
if (ctx->Light._NeedVertices)
- ctx->_NeedEyeCoords |= NEED_EYE_LIGHT;
-
+ ctx->Light._NeedEyeCoords = GL_TRUE;
/* Precompute some shading values. Although we reference
* Light.Material here, we can get away without flushing
* are flushed, they will update the derived state at that time.
*/
if (ctx->Visual.rgbMode) {
- GLuint sides = ctx->Light.Model.TwoSide ? 2 : 1;
- GLuint side;
- for (side=0; side < sides; side++) {
- struct gl_material *mat = &ctx->Light.Material[side];
-
- COPY_3V(ctx->Light._BaseColor[side], mat->Emission);
- ACC_SCALE_3V(ctx->Light._BaseColor[side],
- ctx->Light.Model.Ambient,
- mat->Ambient);
- }
-
- foreach (light, &ctx->Light.EnabledList) {
- for (side=0; side< sides; side++) {
- const struct gl_material *mat = &ctx->Light.Material[side];
- SCALE_3V( light->_MatDiffuse[side], light->Diffuse, mat->Diffuse );
- SCALE_3V( light->_MatAmbient[side], light->Ambient, mat->Ambient );
- SCALE_3V( light->_MatSpecular[side], light->Specular,
- mat->Specular);
- }
- }
+ if (ctx->Light.Model.TwoSide)
+ _mesa_update_material( ctx,
+ MAT_BIT_FRONT_EMISSION |
+ MAT_BIT_FRONT_AMBIENT |
+ MAT_BIT_FRONT_DIFFUSE |
+ MAT_BIT_FRONT_SPECULAR |
+ MAT_BIT_BACK_EMISSION |
+ MAT_BIT_BACK_AMBIENT |
+ MAT_BIT_BACK_DIFFUSE |
+ MAT_BIT_BACK_SPECULAR);
+ else
+ _mesa_update_material( ctx,
+ MAT_BIT_FRONT_EMISSION |
+ MAT_BIT_FRONT_AMBIENT |
+ MAT_BIT_FRONT_DIFFUSE |
+ MAT_BIT_FRONT_SPECULAR);
}
else {
static const GLfloat ci[3] = { .30F, .59F, .11F };
}
-/* _NEW_MODELVIEW
- * _NEW_LIGHT
- * _TNL_NEW_NEED_EYE_COORDS
+/**
+ * Update state derived from light position, spot direction.
+ * Called upon:
+ * _NEW_MODELVIEW
+ * _NEW_LIGHT
+ * _TNL_NEW_NEED_EYE_COORDS
*
* Update on (_NEW_MODELVIEW | _NEW_LIGHT) when lighting is enabled.
* Also update on lighting space changes.
*/
-void
-_mesa_compute_light_positions( GLcontext *ctx )
+static void
+compute_light_positions( GLcontext *ctx )
{
struct gl_light *light;
static const GLfloat eye_z[3] = { 0, 0, 1 };
foreach (light, &ctx->Light.EnabledList) {
if (ctx->_NeedEyeCoords) {
+ /* _Position is in eye coordinate space */
COPY_4FV( light->_Position, light->EyePosition );
}
else {
+ /* _Position is in object coordinate space */
TRANSFORM_POINT( light->_Position, ctx->ModelviewMatrixStack.Top->inv,
light->EyePosition );
}
}
light->_VP_inf_spot_attenuation = 1.0;
}
+ else {
+ /* positional light w/ homogeneous coordinate, divide by W */
+ GLfloat wInv = (GLfloat)1.0 / light->_Position[3];
+ light->_Position[0] *= wInv;
+ light->_Position[1] *= wInv;
+ light->_Position[2] *= wInv;
+ }
if (light->_Flags & LIGHT_SPOT) {
if (ctx->_NeedEyeCoords) {
}
}
}
+
+
+
+static void
+update_modelview_scale( GLcontext *ctx )
+{
+ ctx->_ModelViewInvScale = 1.0F;
+ if (!_math_matrix_is_length_preserving(ctx->ModelviewMatrixStack.Top)) {
+ const GLfloat *m = ctx->ModelviewMatrixStack.Top->inv;
+ GLfloat f = m[2] * m[2] + m[6] * m[6] + m[10] * m[10];
+ if (f < 1e-12) f = 1.0;
+ if (ctx->_NeedEyeCoords)
+ ctx->_ModelViewInvScale = (GLfloat) INV_SQRTF(f);
+ else
+ ctx->_ModelViewInvScale = (GLfloat) SQRTF(f);
+ }
+}
+
+
+/**
+ * Bring up to date any state that relies on _NeedEyeCoords.
+ */
+void
+_mesa_update_tnl_spaces( GLcontext *ctx, GLuint new_state )
+{
+ const GLuint oldneedeyecoords = ctx->_NeedEyeCoords;
+
+ (void) new_state;
+ ctx->_NeedEyeCoords = GL_FALSE;
+
+ if (ctx->_ForceEyeCoords ||
+ (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD) ||
+ ctx->Point._Attenuated ||
+ ctx->Light._NeedEyeCoords)
+ ctx->_NeedEyeCoords = GL_TRUE;
+
+ if (ctx->Light.Enabled &&
+ !_math_matrix_is_length_preserving(ctx->ModelviewMatrixStack.Top))
+ ctx->_NeedEyeCoords = GL_TRUE;
+
+ /* Check if the truth-value interpretations of the bitfields have
+ * changed:
+ */
+ if (oldneedeyecoords != ctx->_NeedEyeCoords) {
+ /* Recalculate all state that depends on _NeedEyeCoords.
+ */
+ update_modelview_scale(ctx);
+ compute_light_positions( ctx );
+
+ if (ctx->Driver.LightingSpaceChange)
+ ctx->Driver.LightingSpaceChange( ctx );
+ }
+ else {
+ GLuint new_state = ctx->NewState;
+
+ /* Recalculate that same state only if it has been invalidated
+ * by other statechanges.
+ */
+ if (new_state & _NEW_MODELVIEW)
+ update_modelview_scale(ctx);
+
+ if (new_state & (_NEW_LIGHT|_NEW_MODELVIEW))
+ compute_light_positions( ctx );
+ }
+}
+
+
+/**
+ * Drivers may need this if the hardware tnl unit doesn't support the
+ * light-in-modelspace optimization. It's also useful for debugging.
+ */
+void
+_mesa_allow_light_in_model( GLcontext *ctx, GLboolean flag )
+{
+ ctx->_ForceEyeCoords = !flag;
+ ctx->NewState |= _NEW_POINT; /* one of the bits from
+ * _MESA_NEW_NEED_EYE_COORDS.
+ */
+}
+
+
+
+/**********************************************************************/
+/***** Initialization *****/
+/**********************************************************************/
+
+/**
+ * Initialize the n-th light data structure.
+ *
+ * \param l pointer to the gl_light structure to be initialized.
+ * \param n number of the light.
+ * \note The defaults for light 0 are different than the other lights.
+ */
+static void
+init_light( struct gl_light *l, GLuint n )
+{
+ make_empty_list( l );
+
+ ASSIGN_4V( l->Ambient, 0.0, 0.0, 0.0, 1.0 );
+ if (n==0) {
+ ASSIGN_4V( l->Diffuse, 1.0, 1.0, 1.0, 1.0 );
+ ASSIGN_4V( l->Specular, 1.0, 1.0, 1.0, 1.0 );
+ }
+ else {
+ ASSIGN_4V( l->Diffuse, 0.0, 0.0, 0.0, 1.0 );
+ ASSIGN_4V( l->Specular, 0.0, 0.0, 0.0, 1.0 );
+ }
+ ASSIGN_4V( l->EyePosition, 0.0, 0.0, 1.0, 0.0 );
+ ASSIGN_3V( l->EyeDirection, 0.0, 0.0, -1.0 );
+ l->SpotExponent = 0.0;
+ _mesa_invalidate_spot_exp_table( l );
+ l->SpotCutoff = 180.0;
+ l->_CosCutoffNeg = -1.0f;
+ l->_CosCutoff = 0.0; /* KW: -ve values not admitted */
+ l->ConstantAttenuation = 1.0;
+ l->LinearAttenuation = 0.0;
+ l->QuadraticAttenuation = 0.0;
+ l->Enabled = GL_FALSE;
+}
+
+
+/**
+ * Initialize the light model data structure.
+ *
+ * \param lm pointer to the gl_lightmodel structure to be initialized.
+ */
+static void
+init_lightmodel( struct gl_lightmodel *lm )
+{
+ ASSIGN_4V( lm->Ambient, 0.2F, 0.2F, 0.2F, 1.0F );
+ lm->LocalViewer = GL_FALSE;
+ lm->TwoSide = GL_FALSE;
+ lm->ColorControl = GL_SINGLE_COLOR;
+}
+
+
+/**
+ * Initialize the material data structure.
+ *
+ * \param m pointer to the gl_material structure to be initialized.
+ */
+static void
+init_material( struct gl_material *m )
+{
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_AMBIENT], 0.2F, 0.2F, 0.2F, 1.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_DIFFUSE], 0.8F, 0.8F, 0.8F, 1.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_SPECULAR], 0.0F, 0.0F, 0.0F, 1.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_EMISSION], 0.0F, 0.0F, 0.0F, 1.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_SHININESS], 0.0F, 0.0F, 0.0F, 0.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_INDEXES], 0.0F, 1.0F, 1.0F, 0.0F );
+
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_AMBIENT], 0.2F, 0.2F, 0.2F, 1.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_DIFFUSE], 0.8F, 0.8F, 0.8F, 1.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_SPECULAR], 0.0F, 0.0F, 0.0F, 1.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_EMISSION], 0.0F, 0.0F, 0.0F, 1.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_SHININESS], 0.0F, 0.0F, 0.0F, 0.0F );
+ ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_INDEXES], 0.0F, 1.0F, 1.0F, 0.0F );
+}
+
+
+/**
+ * Initialize all lighting state for the given context.
+ */
+void
+_mesa_init_lighting( GLcontext *ctx )
+{
+ GLuint i;
+
+ /* Lighting group */
+ for (i = 0; i < MAX_LIGHTS; i++) {
+ init_light( &ctx->Light.Light[i], i );
+ }
+ make_empty_list( &ctx->Light.EnabledList );
+
+ init_lightmodel( &ctx->Light.Model );
+ init_material( &ctx->Light.Material );
+ ctx->Light.ShadeModel = GL_SMOOTH;
+ ctx->Light.Enabled = GL_FALSE;
+ ctx->Light.ColorMaterialFace = GL_FRONT_AND_BACK;
+ ctx->Light.ColorMaterialMode = GL_AMBIENT_AND_DIFFUSE;
+ ctx->Light.ColorMaterialBitmask = _mesa_material_bitmask( ctx,
+ GL_FRONT_AND_BACK,
+ GL_AMBIENT_AND_DIFFUSE, ~0,
+ NULL );
+
+ ctx->Light.ColorMaterialEnabled = GL_FALSE;
+ ctx->Light.ClampVertexColor = GL_TRUE;
+
+ /* Lighting miscellaneous */
+ ctx->_ShineTabList = MALLOC_STRUCT( gl_shine_tab );
+ make_empty_list( ctx->_ShineTabList );
+ /* Allocate 10 (arbitrary) shininess lookup tables */
+ for (i = 0 ; i < 10 ; i++) {
+ struct gl_shine_tab *s = MALLOC_STRUCT( gl_shine_tab );
+ s->shininess = -1;
+ s->refcount = 0;
+ insert_at_tail( ctx->_ShineTabList, s );
+ }
+
+ /* Miscellaneous */
+ ctx->Light._NeedEyeCoords = GL_FALSE;
+ ctx->_NeedEyeCoords = GL_FALSE;
+ ctx->_ModelViewInvScale = 1.0;
+}
+
+
+/**
+ * Deallocate malloc'd lighting state attached to given context.
+ */
+void
+_mesa_free_lighting_data( GLcontext *ctx )
+{
+ struct gl_shine_tab *s, *tmps;
+
+ /* Free lighting shininess exponentiation table */
+ foreach_s( s, tmps, ctx->_ShineTabList ) {
+ _mesa_free( s );
+ }
+ _mesa_free( ctx->_ShineTabList );
+}
projects / mesa.git / blobdiff