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convert sun angle coordinate system outside of the shader

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This commit is contained in:
Ian Curtis 2017-06-25 19:50:02 +00:00
parent 97781108e8
commit ec3872d108
2 changed files with 8 additions and 5 deletions
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9
Src/Graphics/New3D/New3D.cpp
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@ -763,9 +763,9 @@ void CNew3D::RenderViewport(UINT32 addr)
CalcFrustumPlanes(m_planes, vp->projectionMatrix); // we need to calc a 'projection matrix' to get the correct frustum planes for clipping
// Lighting (note that sun vector points toward sun -- away from vertex)
vp->lightingParams[0] = *(float *)&vpnode[0x05]; // sun X
vp->lightingParams[1] = *(float *)&vpnode[0x06]; // sun Y
vp->lightingParams[2] = *(float *)&vpnode[0x04]; // sun Z
vp->lightingParams[0] = *(float *)&vpnode[0x05]; // sun X
vp->lightingParams[1] = -*(float *)&vpnode[0x06]; // sun Y (- to convert to ogl cordinate system)
vp->lightingParams[2] = -*(float *)&vpnode[0x04]; // sun Z (- to convert to ogl cordinate system)
vp->lightingParams[3] = std::max(0.f, std::min(*(float *)&vpnode[0x07], 1.0f)); // sun intensity (clamp to 0-1)
vp->lightingParams[4] = (float)((vpnode[0x24] >> 8) & 0xFF) * (1.0f / 255.0f); // ambient intensity
vp->lightingParams[5] = 0.0; // reserved
@ -1186,9 +1186,12 @@ void CNew3D::CacheModel(Model *m, const UINT32 *data)
else {
if (ph.SpecularEnabled()) {
shade = (ix & 0xFF) / 255.f; // Star wars is the only game to use unsigned fixed shaded values. It's also the only game to set the specular flag on these polys
shade += m_vpAmbient;
shade = std::min(shade, 1.0f);
}
else {
shade = (((ix + 128) & 0xFF) / 255.f); // Step 2+ uses signed or unsigned values for lighting 0-255. Todo finish this logic
shade = std::max(1 - m_vpAmbient, shade);
}
}

4
Src/Graphics/New3D/R3DShader.cpp
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@ -117,8 +117,8 @@ static const char *fragmentShaderR3D =
"vec3 sunVector;\n" // sun lighting vector (as reflecting away from vertex)
"float sunFactor;\n" // sun light projection along vertex normal (0.0 to 1.0)
// Real3D -> OpenGL view space convention (TO-DO: do this outside of shader)
"sunVector = lighting[0] * vec3(1.0, -1.0, -1.0);\n"
// Sun angle
"sunVector = lighting[0];\n"
// Compute diffuse factor for sunlight
"sunFactor = max(dot(sunVector, fsViewNormal), 0.0);\n"