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This commit is separate in two parts:

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Fix: fix for lighting equations , that must improve lighting in a lot of games (  test smg :) )
experimental speedup: implemented alpha pass using stencil buffer instead of a duplicate shader. i recommend to test this well as i dono if will work the same way in all the systems. i my system it gives a nice 2-5 fps improvement. if it brings problems in any system or game will revert asap.
enjoy

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5653 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Rodolfo Osvaldo Bogado
2010-06-12 12:36:33 +00:00
parent 7efbc879e5
commit ce3c2700e7
3 changed files with 48 additions and 35 deletions
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55
Source/Core/VideoCommon/Src/VertexShaderGen.cpp
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@ -270,37 +270,44 @@ const char *GenerateVertexShaderCode(u32 components, bool D3D)
else // from color
WRITE(p, "lacc.w = "I_MATERIALS".C%d.w;\n", j);
}
if (color.enablelighting && alpha.enablelighting && (color.GetFullLightMask() != alpha.GetFullLightMask() || color.lightparams != alpha.lightparams)) {
// both have lighting, except not using the same lights
int mask = 0; // holds already computed lights
if (color.lightparams == alpha.lightparams && (color.GetFullLightMask() & alpha.GetFullLightMask())) {
// if lights are shared, compute those first
mask = color.GetFullLightMask() & alpha.GetFullLightMask();
for (int i = 0; i < 8; ++i) {
if (mask & (1<<i))
p = GenerateLightShader(p, i, color, "lacc", 3);
}
}
if(color.enablelighting && alpha.enablelighting)
{
// both have lighting, test if they use the same ligths
int mask = 0;
if(color.lightparams == alpha.lightparams)
{
mask = color.GetFullLightMask() & alpha.GetFullLightMask();
if(mask)
{
for (int i = 0; i < 8; ++i)
{
if (mask & (1<<i))
p = GenerateLightShader(p, i, color, "lacc", 3);
}
}
}
// no shared lights
for (int i = 0; i < 8; ++i) {
for (int i = 0; i < 8; ++i)
{
if (!(mask&(1<<i)) && (color.GetFullLightMask() & (1<<i)) )
p = GenerateLightShader(p, i, color, "lacc", 1);
if (!(mask&(1<<i)) && (alpha.GetFullLightMask() & (1<<i)) )
p = GenerateLightShader(p, i, alpha, "lacc", 2);
}
}
else if (color.enablelighting || alpha.enablelighting) {
// either one is enabled
int coloralpha = (int)color.enablelighting|((int)alpha.enablelighting<<1);
for (int i = 0; i < 8; ++i) {
if (color.GetFullLightMask() & (1<<i) )
p = GenerateLightShader(p, i, color.enablelighting?color:alpha, "lacc", coloralpha);
}
else if (color.enablelighting || alpha.enablelighting)
{
//ligths are disabled in one channel so proccess only te active
LitChannel workingchannel = color.enablelighting ? color : alpha;
int coloralpha = color.enablelighting ? 1 : 2;
for (int i = 0; i < 8; ++i)
{
if (workingchannel.GetFullLightMask() & (1<<i))
p = GenerateLightShader(p, i, workingchannel, "lacc", coloralpha);
}
}
}
if (color.enablelighting != alpha.enablelighting) {
if (color.enablelighting)