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Diffstat (limited to 'mesalib/src/mesa/main/light.c')
-rw-r--r--mesalib/src/mesa/main/light.c169
1 files changed, 6 insertions, 163 deletions
diff --git a/mesalib/src/mesa/main/light.c b/mesalib/src/mesa/main/light.c
index a16d0e998..962a3e689 100644
--- a/mesalib/src/mesa/main/light.c
+++ b/mesalib/src/mesa/main/light.c
@@ -161,11 +161,9 @@ _mesa_light(struct gl_context *ctx, GLuint lnum, GLenum pname, const GLfloat *pa
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
light->SpotCutoff = params[0];
- light->_CosCutoffNeg = (GLfloat) (cos(light->SpotCutoff * DEG2RAD));
- if (light->_CosCutoffNeg < 0)
+ light->_CosCutoff = (GLfloat) (cos(light->SpotCutoff * DEG2RAD));
+ if (light->_CosCutoff < 0)
light->_CosCutoff = 0;
- else
- light->_CosCutoff = light->_CosCutoffNeg;
if (light->SpotCutoff != 180.0F)
light->_Flags |= LIGHT_SPOT;
else
@@ -623,11 +621,6 @@ _mesa_material_bitmask( struct gl_context *ctx, GLenum face, GLenum pname,
-static void
-invalidate_shine_table( struct gl_context *ctx, GLuint side );
-
-
-
/* Update derived values following a change in ctx->Light.Material
*/
void
@@ -699,14 +692,6 @@ _mesa_update_material( struct gl_context *ctx, GLuint bitmask )
mat[MAT_ATTRIB_BACK_SPECULAR]);
}
}
-
- if (bitmask & MAT_BIT_FRONT_SHININESS) {
- invalidate_shine_table( ctx, 0 );
- }
-
- if (bitmask & MAT_BIT_BACK_SHININESS) {
- invalidate_shine_table( ctx, 1 );
- }
}
@@ -876,126 +861,6 @@ _mesa_GetMaterialiv( GLenum face, GLenum pname, GLint *params )
-/**********************************************************************/
-/***** Lighting computation *****/
-/**********************************************************************/
-
-
-/*
- * Notes:
- * When two-sided lighting is enabled we compute the color (or index)
- * for both the front and back side of the primitive. Then, when the
- * orientation of the facet is later learned, we can determine which
- * color (or index) to use for rendering.
- *
- * KW: We now know orientation in advance and only shade for
- * the side or sides which are actually required.
- *
- * Variables:
- * n = normal vector
- * V = vertex position
- * P = light source position
- * Pe = (0,0,0,1)
- *
- * Precomputed:
- * IF P[3]==0 THEN
- * // light at infinity
- * IF local_viewer THEN
- * _VP_inf_norm = unit vector from V to P // Precompute
- * ELSE
- * // eye at infinity
- * _h_inf_norm = Normalize( VP + <0,0,1> ) // Precompute
- * ENDIF
- * ENDIF
- *
- * Functions:
- * Normalize( v ) = normalized vector v
- * Magnitude( v ) = length of vector v
- */
-
-
-
-/* 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.
- */
-static void
-invalidate_shine_table( struct gl_context *ctx, GLuint side )
-{
- ASSERT(side < 2);
- if (ctx->_ShineTable[side])
- ctx->_ShineTable[side]->refcount--;
- ctx->_ShineTable[side] = NULL;
-}
-
-
-static void
-validate_shine_table( struct gl_context *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;
-
- if (s == list) {
- GLint j;
- GLfloat *m;
-
- foreach(s, list)
- if (s->refcount == 0)
- break;
-
- m = s->tab;
- m[0] = 0.0;
- if (shininess == 0.0) {
- for (j = 1 ; j <= SHINE_TABLE_SIZE ; j++)
- m[j] = 1.0;
- }
- else {
- for (j = 1 ; j < SHINE_TABLE_SIZE ; j++) {
- GLdouble t, x = j / (GLfloat) (SHINE_TABLE_SIZE - 1);
- if (x < 0.005) /* underflow check */
- x = 0.005;
- t = pow(x, shininess);
- if (t > 1e-20)
- m[j] = (GLfloat) t;
- else
- m[j] = 0.0;
- }
- m[SHINE_TABLE_SIZE] = 1.0;
- }
-
- s->shininess = shininess;
- }
-
- if (ctx->_ShineTable[side])
- ctx->_ShineTable[side]->refcount--;
-
- ctx->_ShineTable[side] = s;
- move_to_tail( list, s );
- s->refcount++;
-}
-
-
-void
-_mesa_validate_all_lighting_tables( struct gl_context *ctx )
-{
- GLfloat 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.Attrib[MAT_ATTRIB_BACK_SHININESS][0];
- if (!ctx->_ShineTable[1] || ctx->_ShineTable[1]->shininess != shininess)
- validate_shine_table( ctx, 1, shininess );
-}
-
-
/**
* Examine current lighting parameters to determine if the optimized lighting
* function can be used.
@@ -1005,23 +870,23 @@ _mesa_validate_all_lighting_tables( struct gl_context *ctx )
void
_mesa_update_lighting( struct gl_context *ctx )
{
+ GLbitfield flags = 0;
struct gl_light *light;
ctx->Light._NeedEyeCoords = GL_FALSE;
- ctx->Light._Flags = 0;
if (!ctx->Light.Enabled)
return;
foreach(light, &ctx->Light.EnabledList) {
- ctx->Light._Flags |= light->_Flags;
+ flags |= light->_Flags;
}
ctx->Light._NeedVertices =
- ((ctx->Light._Flags & (LIGHT_POSITIONAL|LIGHT_SPOT)) ||
+ ((flags & (LIGHT_POSITIONAL|LIGHT_SPOT)) ||
ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR ||
ctx->Light.Model.LocalViewer);
- ctx->Light._NeedEyeCoords = ((ctx->Light._Flags & LIGHT_POSITIONAL) ||
+ ctx->Light._NeedEyeCoords = ((flags & LIGHT_POSITIONAL) ||
ctx->Light.Model.LocalViewer);
/* XXX: This test is overkill & needs to be fixed both for software and
@@ -1081,9 +946,6 @@ compute_light_positions( struct gl_context *ctx )
TRANSFORM_NORMAL( ctx->_EyeZDir, eye_z, ctx->ModelviewMatrixStack.Top->m );
}
- /* Make sure all the light tables are updated before the computation */
- _mesa_validate_all_lighting_tables(ctx);
-
foreach (light, &ctx->Light.EnabledList) {
if (ctx->_NeedEyeCoords) {
@@ -1260,7 +1122,6 @@ init_light( struct gl_light *l, GLuint n )
ASSIGN_3V( l->SpotDirection, 0.0, 0.0, -1.0 );
l->SpotExponent = 0.0;
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;
@@ -1337,17 +1198,6 @@ _mesa_init_lighting( struct gl_context *ctx )
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;
@@ -1362,11 +1212,4 @@ _mesa_init_lighting( struct gl_context *ctx )
void
_mesa_free_lighting_data( struct gl_context *ctx )
{
- struct gl_shine_tab *s, *tmps;
-
- /* Free lighting shininess exponentiation table */
- foreach_s( s, tmps, ctx->_ShineTabList ) {
- free( s );
- }
- free( ctx->_ShineTabList );
}
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