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Linux/AMD: Fixed font shaders.

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This commit is contained in:
bkaradzic 2013-06-07 22:45:02 -07:00
parent a9025c8e07
commit 9c005e40ba
2 changed files with 15 additions and 7 deletions
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9
examples/common/font/fs_font_basic.sc
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@ -8,6 +8,11 @@ void main()
{
vec4 color = textureCube(u_texColor, v_texcoord0.xyz);
int index = int(v_texcoord0.w*4.0 + 0.5);
float a = color.bgra[index];
gl_FragColor = vec4(v_color0.rgb, v_color0.a * a);
float rgba[4];
rgba[0] = color.z;
rgba[1] = color.y;
rgba[2] = color.x;
rgba[3] = color.w;
float alpha = rgba[index];
gl_FragColor = vec4(v_color0.xyz, v_color0.a * alpha);
}

13
examples/common/font/fs_font_distance_field.sc
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@ -4,18 +4,21 @@ $input v_color0, v_texcoord0
SAMPLERCUBE(u_texColor, 0);
uniform float u_inverse_gamma;
void main()
{
vec4 color = textureCube(u_texColor, v_texcoord0.xyz);
int index = int(v_texcoord0.w*4.0 + 0.5);
float distance = color.bgra[index];
float rgba[4];
rgba[0] = color.z;
rgba[1] = color.y;
rgba[2] = color.x;
rgba[3] = color.w;
float dist = rgba[index];
float dx = length(dFdx(v_texcoord0.xyz) );
float dy = length(dFdy(v_texcoord0.xyz) );
float w = 16.0*0.5*(dx+dy);
float a = smoothstep(0.5-w, 0.5+w, distance);
gl_FragColor = vec4(v_color0.rgb, v_color0.a*a);
float alpha = smoothstep(0.5-w, 0.5+w, dist);
gl_FragColor = vec4(v_color0.xyz, v_color0.w*alpha);
}