jogamp.graph.curve.opengl.shader.curverenderer01-pass2-vbaa_bforce_odd.glsl Maven / Gradle / Ivy
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Java™ Binding for the OpenGL® API
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// Pass-2: AA on Texture
// Note: gcv_FboTexCoord is in center of sample pixels.
// float sample_count = gcu_FboTexSize.z;
vec2 psize = 1.0 / gcu_FboTexSize.xy; // pixel size
// Not only the poles (NW, SW, ..) but the whole edge!
const float sample_weight = 1.0 / ( sample_count * sample_count );
// const vec4 tex_weights = vec4(0.075, 0.06, 0.045, 0.025);
vec2 texCoord = gcv_FboTexCoord.st;
vec4 t;
// SampleCount 1 -> 1x (raster 1x1)
t += texture2D(gcu_FboTexUnit, texCoord)*sample_weight; // CENTER
#if SAMPLE_COUNT > 1
// SampleCount 3 -> +8x = 9p (raster 3x3)
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-1.0, -1.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 0.0, -1.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 1.0, -1.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-1.0, 0.0))*sample_weight; // Center Left
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 1.0, 0.0))*sample_weight; // Center Right
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-1.0, 1.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 0.0, 1.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 1.0, 1.0))*sample_weight; // bottom line
#if SAMPLE_COUNT > 3
// SampleCount 5 -> +16x = 25p (raster 5x5)
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-2.0, -1.0))*sample_weight; // top line - 1
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 2.0, -1.0))*sample_weight; // top line - 1
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-2.0, 0.0))*sample_weight; // Center Left
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 2.0, 0.0))*sample_weight; // Center Right
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-2.0, 1.0))*sample_weight; // bottom line - 1
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 2.0, 1.0))*sample_weight; // bottom line - 1
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-2.0, -2.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-1.0, -2.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 0.0, -2.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 1.0, -2.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 2.0, -2.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-2.0, 2.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-1.0, 2.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 0.0, 2.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 1.0, 2.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 2.0, 2.0))*sample_weight; // bottom line
#if SAMPLE_COUNT > 5
// SampleCount 7 -> +24x = 49p (raster 7x7)
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-3.0, -2.0))*sample_weight; // top line - 1
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 3.0, -2.0))*sample_weight; // top line - 1
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-3.0, -1.0))*sample_weight; // top line - 2
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 3.0, -1.0))*sample_weight; // top line - 2
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-3.0, 0.0))*sample_weight; // Center Left
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 3.0, 0.0))*sample_weight; // Center Right
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-3.0, 1.0))*sample_weight; // bottom line - 2
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 3.0, 1.0))*sample_weight; // bottom line - 2
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-3.0, 2.0))*sample_weight; // bottom line - 1
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 3.0, 2.0))*sample_weight; // bottom line - 1
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-3.0, -3.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-2.0, -3.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-1.0, -3.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 0.0, -3.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 1.0, -3.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 2.0, -3.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 3.0, -3.0))*sample_weight; // top line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-3.0, 3.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-2.0, 3.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2(-1.0, 3.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 0.0, 3.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 1.0, 3.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 2.0, 3.0))*sample_weight; // bottom line
t += texture2D(gcu_FboTexUnit, texCoord + psize*vec2( 3.0, 3.0))*sample_weight; // bottom line
#endif
#endif
#endif
#if 0
if(t.w == 0.0){
discard; // discard freezes NV tegra2 compiler
}
#endif
mgl_FragColor = t;