preserve-emulation/ppsspp
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Match SW T&L with hardware

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raven02 committed 2013-04-11 21:47:34 +08:00
1 parent 182b95f187
commit 7be4ce1d86
1 file changed
+25 -15
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GPU/GLES/TransformPipeline.cpp
+25 -15
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@@ -53,6 +53,10 @@ enum {
TRANSFORMED_VERTEX_BUFFER_SIZE = 65536 * sizeof(TransformedVertex)
};
inline float clamp(float in, float min, float max) {
return in < min ? min : (in > max ? max : in);
}
TransformDrawEngine::TransformDrawEngine()
: collectedVerts(0),
prevPrim_(-1),
@@ -276,6 +280,7 @@ void Lighter::Light(float colorOut0[4], float colorOut1[4], const float colorIn[
GELightType type = (GELightType)((gstate.ltype[l] >> 8) & 3);
Vec3 toLight(0,0,0);
Vec3 lightDir(0,0,0);
if (type == GE_LIGHTTYPE_DIRECTIONAL)
toLight = Vec3(gstate_c.lightpos[l]); // lightdir is for spotlights
@@ -287,7 +292,9 @@ void Lighter::Light(float colorOut0[4], float colorOut1[4], const float colorIn[
float distanceToLight = toLight.Length();
float dot = 0.0f;
float angle = 0.0f;
float lightScale = 0.0f;
if (distanceToLight > 0.0f) {
toLight /= distanceToLight;
dot = toLight * norm;
@@ -298,20 +305,23 @@ void Lighter::Light(float colorOut0[4], float colorOut1[4], const float colorIn[
if (poweredDiffuse)
dot = powf(dot, specCoef_);
float lightScale = 1.0f;
if (type != GE_LIGHTTYPE_DIRECTIONAL) {
lightScale = 1.0f / (gstate_c.lightatt[l][0] + gstate_c.lightatt[l][1]*distanceToLight + gstate_c.lightatt[l][2]*distanceToLight*distanceToLight);
if (lightScale > 1.0f) lightScale = 1.0f;
}
if (type == GE_LIGHTTYPE_SPOT) {
Vec3 lightDir = gstate_c.lightdir[l];
lightDir.Normalize();
float angle = toLight * lightDir;
if (angle < gstate_c.lightangle[l])
lightScale = 0.0f;
else
lightScale *= powf(angle, gstate_c.lightspotCoef[l]);
// Attenuation
switch (type) {
case GE_LIGHTTYPE_DIRECTIONAL:
lightScale = 1.0f;
break;
case GE_LIGHTTYPE_POINT:
lightScale = clamp(1.0f / (gstate_c.lightatt[l][0] + gstate_c.lightatt[l][1]*distanceToLight + gstate_c.lightatt[l][2]*distanceToLight*distanceToLight), 0.0f, 1.0f);
break;
case GE_LIGHTTYPE_SPOT:
lightDir = gstate_c.lightdir[l];
angle = toLight.Normalize() * lightDir.Normalize();
if (angle >= gstate_c.lightangle[l])
lightScale = clamp(1.0f / (gstate_c.lightatt[l][0] + gstate_c.lightatt[l][1]*distanceToLight + gstate_c.lightatt[l][2]*distanceToLight*distanceToLight), 0.0f, 1.0f) * powf(angle, gstate_c.lightspotCoef[l]);
break;
default:
// ILLEGAL
break;
}
Color4 lightDiff(gstate_c.lightColor[1][l], 0.0f);