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#version 330 core
out vec4 FragColor;
in vec2 TexCoord;
in vec2 BTexCoord;
in vec4 DaColor;
in vec4 Viewport;
in mat4 ProjInv;
in vec4 FogColor;
in vec2 FogStartEnd;
uniform sampler2D atlas;
uniform sampler2D lightTex;
void main()
{
//FragColor = texture(lightTex, TexCoord);
//FragColor = texture(lightTex, vec2(8.0/256.0,8.0/256.0));
//FragColor = texture(lightTex, vec2(0, 0));
//FragColor = vec4(texture(lightTex, vec2(0, 0)).xyz,1);
//FragColor = vec4(BTexCoord.xy / 256, 0, 1);
//FragColor = texture(lightTex, (BTexCoord + 8.0) / 256.0);
//FragColor = texture(light, vec2(16,16));
//FragColor = vec4(1,0,0,1);
//FragColor = DaColor/256.0;
vec4 texColor = texture(atlas, TexCoord);
vec4 colorMult = DaColor/256.0;
vec4 lightyColor = texture(lightTex, (BTexCoord + 8.0) / 256.0);
//vec4 lightyMultColor = vec4(lightyColor.x * colorMult.x, lightyColor.y * colorMult.y, lightyColor.z * colorMult.z, lightyColor.w * colorMult.w);
//FragColor = vec4(texColor.x * colorMult.x, texColor.y * colorMult.y, texColor.z * colorMult.z, texColor.w * colorMult.w);
//vec4 texMultColor = texColor * colorMult;
//FragColor = texMultColor;// + (lightyColor - vec4(0.5,0.5,0.5,0.0));
//FragColor = vec4(lightyColor.xyz, 1);
//FragColor = ((texColor * colorMult) * lightyColor);
vec4 rasterColor = ((texColor * colorMult) * lightyColor);
float s = FogStartEnd.x;
float e = FogStartEnd.y;
vec4 ndcPos;
ndcPos.xy = ((2.0 * gl_FragCoord.xy) - (2.0 * Viewport.xy)) / (Viewport.zw) - 1;
ndcPos.z = (2.0 * gl_FragCoord.z - gl_DepthRange.near - gl_DepthRange.far) /
(gl_DepthRange.far - gl_DepthRange.near);
ndcPos.w = 1.0;
vec4 clipPos = ndcPos / gl_FragCoord.w;
vec4 eyePos = ProjInv * clipPos;
float z = length(eyePos);
/*
if(z < 200){
discard;
}
*/
float f = (e - z) / (e - s);
f = clamp(f, 0, 1);
FragColor = mix(FogColor, rasterColor, f);
}
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