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authormarha <marha@users.sourceforge.net>2012-02-13 08:47:19 +0100
committermarha <marha@users.sourceforge.net>2012-02-13 08:47:19 +0100
commiteaa70945cb3f1a432b8c505ecede9ebc7769f36d (patch)
tree8e44ff4da739e384a2c6a34c1b42ecfb8e212344 /mesalib/src/mesa/main/light.h
parent474621addc25cb22865c54b70ffbec07c82eb04c (diff)
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libX11 libxcb mesa xserver mkfontscale git update 13 feb 2012
Diffstat (limited to 'mesalib/src/mesa/main/light.h')
-rw-r--r--mesalib/src/mesa/main/light.h37
1 files changed, 17 insertions, 20 deletions
diff --git a/mesalib/src/mesa/main/light.h b/mesalib/src/mesa/main/light.h
index 9b66c7ed8..996698793 100644
--- a/mesalib/src/mesa/main/light.h
+++ b/mesalib/src/mesa/main/light.h
@@ -87,22 +87,24 @@ extern void
_mesa_light(struct gl_context *ctx, GLuint lnum, GLenum pname, const GLfloat *params);
-/* Lerp between adjacent values in the f(x) lookup table, giving a
- * continuous function, with adequeate overall accuracy. (Though
- * still pretty good compared to a straight lookup).
- * Result should be a GLfloat.
+/*
+ * Compute dp ^ SpecularExponent.
+ * Lerp between adjacent values in the f(x) lookup table, giving a
+ * continuous function, with adequate overall accuracy. (Though still
+ * pretty good compared to a straight lookup).
*/
-#define GET_SHINE_TAB_ENTRY( table, dp, result ) \
-do { \
- struct gl_shine_tab *_tab = table; \
- float f = (dp * (SHINE_TABLE_SIZE-1)); \
- int k = (int) f; \
- if (k < 0 /* gcc may cast an overflow float value to negative int value*/ \
- || k > SHINE_TABLE_SIZE-2) \
- result = (GLfloat) pow( dp, _tab->shininess ); \
- else \
- result = _tab->tab[k] + (f-k)*(_tab->tab[k+1]-_tab->tab[k]); \
-} while (0)
+static inline GLfloat
+_mesa_lookup_shininess(const struct gl_context *ctx, GLuint face, GLfloat dp)
+{
+ const struct gl_shine_tab *tab = ctx->_ShineTable[face];
+ float f = dp * (SHINE_TABLE_SIZE - 1);
+ int k = (int) f;
+ if (k < 0 /* gcc may cast an overflow float value to negative int value */
+ || k > SHINE_TABLE_SIZE - 2)
+ return powf(dp, tab->shininess);
+ else
+ return tab->tab[k] + (f - k) * (tab->tab[k+1] - tab->tab[k]);
+}
extern GLuint _mesa_material_bitmask( struct gl_context *ctx,
@@ -110,10 +112,6 @@ extern GLuint _mesa_material_bitmask( struct gl_context *ctx,
GLuint legal,
const char * );
-extern void _mesa_invalidate_spot_exp_table( struct gl_light *l );
-
-extern void _mesa_invalidate_shine_table( struct gl_context *ctx, GLuint i );
-
extern void _mesa_validate_all_lighting_tables( struct gl_context *ctx );
extern void _mesa_update_lighting( struct gl_context *ctx );
@@ -135,7 +133,6 @@ extern void _mesa_allow_light_in_model( struct gl_context *ctx, GLboolean flag )
#else
#define _mesa_update_color_material( c, r ) ((void)0)
#define _mesa_validate_all_lighting_tables( c ) ((void)0)
-#define _mesa_invalidate_spot_exp_table( l ) ((void)0)
#define _mesa_material_bitmask( c, f, p, l, s ) 0
#define _mesa_init_lighting( c ) ((void)0)
#define _mesa_free_lighting_data( c ) ((void)0)