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Fragment Shader : use mix() for decal/blend

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This commit is contained in:
raven02 2013-04-08 22:48:40 +08:00
parent 2b4ec12aa9
commit 3252eb6554
1 changed files with 7 additions and 6 deletions
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13
GPU/GLES/FragmentShaderGenerator.cpp
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@ -163,18 +163,19 @@ void GenerateFragmentShader(char *buffer) {
if (gstate.texfunc & 0x100) { // texfmt == RGBA
switch (gstate.texfunc & 0x7) {
case GE_TEXFUNC_MODULATE:
WRITE(p, " vec4 v = t * p%s;\n", secondary); break;
WRITE(p, " vec4 v = p * t%s;\n", secondary); break;
case GE_TEXFUNC_DECAL:
WRITE(p, " vec4 v = vec4((1.0 - t.a) * p.rgb + t.rgb * t.a, p.a)%s;\n", secondary); break;
WRITE(p, " vec4 v = vec4(mix(p.rgb, t.rgb, t.a), p.a)%s;\n", secondary); break;
case GE_TEXFUNC_BLEND:
WRITE(p, " vec4 v = vec4((1.0 - t.rgb) * p.rgb + t.rgb * u_texenv.rgb, p.a * t.a)%s;\n", secondary); break;
WRITE(p, " vec4 v = vec4(mix(p.rgb, u_texenv.rgb, t.rgb), p.a * t.a)%s;\n", secondary); break;
case GE_TEXFUNC_REPLACE:
WRITE(p, " vec4 v = t%s;\n", secondary); break;
case GE_TEXFUNC_ADD:
WRITE(p, " vec4 v = vec4(t.rgb + p.rgb, p.a * t.a)%s;\n", secondary); break;
WRITE(p, " vec4 v = vec4(p.rgb + t.rgb, p.a * t.a)%s;\n", secondary); break;
default:
WRITE(p, " vec4 v = p;\n"); break;
}
} else { // texfmt == RGB
switch (gstate.texfunc & 0x7) {
case GE_TEXFUNC_MODULATE:
@ -182,11 +183,11 @@ void GenerateFragmentShader(char *buffer) {
case GE_TEXFUNC_DECAL:
WRITE(p, " vec4 v = vec4(t.rgb, p.a)%s;\n", secondary); break;
case GE_TEXFUNC_BLEND:
WRITE(p, " vec4 v = vec4((1.0 - t.rgb) * p.rgb + t.rgb * u_texenv.rgb, p.a)%s;\n", secondary); break;
WRITE(p, " vec4 v = vec4(mix(p.rgb, u_texenv.rgb, t.rgb), p.a)%s;\n", secondary); break;
case GE_TEXFUNC_REPLACE:
WRITE(p, " vec4 v = vec4(t.rgb, p.a)%s;\n", secondary); break;
case GE_TEXFUNC_ADD:
WRITE(p, " vec4 v = vec4(t.rgb + p.rgb, p.a)%s;\n", secondary); break;
WRITE(p, " vec4 v = vec4(p.rgb + t.rgb, p.a)%s;\n", secondary); break;
default:
WRITE(p, " vec4 v = p;\n"); break;
}