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GRIM: Set correct cutoff angle now that TinyGL renders spots correctly.

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Also, set (T)GL_SPOT_EXPONENT as in OpenGL renderer.
This commit is contained in:
Vincent Pelletier 2015-03-15 19:55:49 +01:00
parent ce5af40a0b
commit 5c0d8ae30e
1 changed files with 4 additions and 5 deletions
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9
engines/grim/gfx_tinygl.cpp
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@ -894,6 +894,7 @@ void GfxTinyGL::setupLight(Light *light, int lightId) {
float lightPos[] = { 0.0f, 0.0f, 0.0f, 1.0f };
float lightDir[] = { 0.0f, 0.0f, -1.0f };
float cutoff = 180.0f;
float spot_exp = 0.0f;
float intensity = light->_intensity / 1.3f;
lightColor[0] = ((float)light->_color.getRed() / 15.0f) * intensity;
@ -916,17 +917,15 @@ void GfxTinyGL::setupLight(Light *light, int lightId) {
lightDir[0] = light->_dir.x();
lightDir[1] = light->_dir.y();
lightDir[2] = light->_dir.z();
/* FIXME: TGL_SPOT_CUTOFF should be light->_penumbraangle, but there
seems to be a bug in tinygl as it renders differently from OpenGL.
Reproducing: turn off all lights (comment out), go to scene "al",
and walk along left wall under the lamp. */
cutoff = 90.0f;
spot_exp = 2.0f;
cutoff = light->_penumbraangle;
}
tglDisable(TGL_LIGHT0 + lightId);
tglLightfv(TGL_LIGHT0 + lightId, TGL_DIFFUSE, lightColor);
tglLightfv(TGL_LIGHT0 + lightId, TGL_POSITION, lightPos);
tglLightfv(TGL_LIGHT0 + lightId, TGL_SPOT_DIRECTION, lightDir);
tglLightf(TGL_LIGHT0 + lightId, TGL_SPOT_EXPONENT, spot_exp);
tglLightf(TGL_LIGHT0 + lightId, TGL_SPOT_CUTOFF, cutoff);
tglEnable(TGL_LIGHT0 + lightId);
}