diff options
| author | Patrice Mandin <patrice@manoir.racoon.city> | 2007-01-02 14:31:16 +0100 |
|---|---|---|
| committer | Patrice Mandin <patrice@manoir.racoon.city> | 2007-01-02 14:31:16 +0100 |
| commit | bbfd963f492683dc359b7e3f8fcb7ceb2483f886 (patch) | |
| tree | 0fdbaab12cce39c16f03e54d0895edc8ce0b0b90 /src/mesa/drivers/dri/nouveau/nv30_state.c | |
| parent | 254ce75ac300d8d20ba4e2fce81c4459c692d2b1 (diff) | |
Update spot light params
Diffstat (limited to 'src/mesa/drivers/dri/nouveau/nv30_state.c')
| -rw-r--r-- | src/mesa/drivers/dri/nouveau/nv30_state.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/src/mesa/drivers/dri/nouveau/nv30_state.c b/src/mesa/drivers/dri/nouveau/nv30_state.c index 45befd0e77..9bf5f2adea 100644 --- a/src/mesa/drivers/dri/nouveau/nv30_state.c +++ b/src/mesa/drivers/dri/nouveau/nv30_state.c @@ -369,6 +369,7 @@ static void nv30Hint(GLcontext *ctx, GLenum target, GLenum mode) // void (*IndexMask)(GLcontext *ctx, GLuint mask); enum { + SPOTLIGHT_NO_UPDATE, SPOTLIGHT_UPDATE_EXPONENT, SPOTLIGHT_UPDATE_DIRECTION, SPOTLIGHT_UPDATE_ALL @@ -379,7 +380,7 @@ static void nv30Lightfv(GLcontext *ctx, GLenum light, GLenum pname, const GLfloa nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx); GLint p = light - GL_LIGHT0; struct gl_light *l = &ctx->Light.Light[p]; - int spotlightUpdate = -1; + int spotlight_update = SPOTLIGHT_NO_UPDATE; if (NOUVEAU_CARD_USING_SHADERS) return; @@ -412,13 +413,13 @@ static void nv30Lightfv(GLcontext *ctx, GLenum light, GLenum pname, const GLfloa OUT_RING_CACHEf(params[2]); break; case GL_SPOT_DIRECTION: - spotlightUpdate = SPOTLIGHT_UPDATE_DIRECTION; + spotlight_update = SPOTLIGHT_UPDATE_DIRECTION; break; case GL_SPOT_EXPONENT: - spotlightUpdate = SPOTLIGHT_UPDATE_EXPONENT; + spotlight_update = SPOTLIGHT_UPDATE_EXPONENT; break; case GL_SPOT_CUTOFF: - spotlightUpdate = SPOTLIGHT_UPDATE_ALL; + spotlight_update = SPOTLIGHT_UPDATE_ALL; break; case GL_CONSTANT_ATTENUATION: BEGIN_RING_CACHE(NvSub3D, NV30_TCL_PRIMITIVE_3D_LIGHT_CONSTANT_ATTENUATION(p), 1); @@ -436,13 +437,14 @@ static void nv30Lightfv(GLcontext *ctx, GLenum light, GLenum pname, const GLfloa break; } - switch(spotlightUpdate) { + switch(spotlight_update) { case SPOTLIGHT_UPDATE_DIRECTION: { GLfloat x,y,z; - x = -2.0 * (1.0 + l->_CosCutoff) * l->_NormDirection[0]; - y = -2.0 * (1.0 + l->_CosCutoff) * l->_NormDirection[1]; - z = -2.0 * (1.0 + l->_CosCutoff) * l->_NormDirection[2]; + GLfloat spot_light_coef_a = 1.0 / (l->_CosCutoff - 1.0); + x = spot_light_coef_a * l->_NormDirection[0]; + y = spot_light_coef_a * l->_NormDirection[1]; + z = spot_light_coef_a * l->_NormDirection[2]; BEGIN_RING_CACHE(NvSub3D, NV30_TCL_PRIMITIVE_3D_LIGHT_SPOT_DIR_X(p), 3); OUT_RING_CACHEf(x); OUT_RING_CACHEf(y); @@ -464,13 +466,14 @@ static void nv30Lightfv(GLcontext *ctx, GLenum light, GLenum pname, const GLfloa case SPOTLIGHT_UPDATE_ALL: { GLfloat cc,lc,qc, x,y,z, c; + GLfloat spot_light_coef_a = 1.0 / (l->_CosCutoff - 1.0); cc = 1.0; /* FIXME: These need to be correctly computed */ lc = 0.0; qc = 2.0; - x = -2.0 * (1.0 + l->_CosCutoff) * l->_NormDirection[0]; - y = -2.0 * (1.0 + l->_CosCutoff) * l->_NormDirection[1]; - z = -2.0 * (1.0 + l->_CosCutoff) * l->_NormDirection[2]; - c = -2.0 * (0.5 + l->_CosCutoff); + x = spot_light_coef_a * l->_NormDirection[0]; + y = spot_light_coef_a * l->_NormDirection[1]; + z = spot_light_coef_a * l->_NormDirection[2]; + c = spot_light_coef_a + 1.0; BEGIN_RING_CACHE(NvSub3D, NV30_TCL_PRIMITIVE_3D_LIGHT_SPOT_CUTOFF_A(p), 7); OUT_RING_CACHEf(cc); OUT_RING_CACHEf(lc); |