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[require]
GLSL >= 1.50
GL_ARB_tessellation_shader
[vertex shader]
#version 150
in vec4 piglit_vertex;
void main()
{
gl_Position = piglit_vertex;
}
[tessellation control shader]
#version 150
#extension GL_ARB_tessellation_shader : require
layout(vertices = 4) out;
uniform int index;
out block {
float m1[16];
float m2[14];
} var[];
out vec4 color[];
void main()
{
for (int i = 0; i < 16; i++)
var[gl_InvocationID].m1[i] = 1.0 + float(i);
for (int i = 0; i < 14; i++)
var[gl_InvocationID].m2[i] = 1.0 + float(16+i);
if (index >= 16)
var[gl_InvocationID].m2[index-16] = 0.0;
else
var[gl_InvocationID].m1[index] = 0.0;
gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
gl_TessLevelOuter = float[4](1.0, 1.0, 1.0, 1.0);
gl_TessLevelInner = float[2](1.0, 1.0);
barrier();
bool pass = true;
for (int i = 0; i < 16; i++) {
float x = var[(gl_InvocationID + 1) % gl_PatchVerticesIn].m1[i];
pass = pass && x == (index == i ?
0.0 :
1.0 + float(i));
}
for (int i = 0; i < 14; i++) {
float x = var[(gl_InvocationID + 1) % gl_PatchVerticesIn].m2[i];
pass = pass && x == (index == 16+i ?
0.0 :
17.0 + float(i));
}
color[gl_InvocationID] = pass ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0);
}
[tessellation evaluation shader]
#version 150
#extension GL_ARB_tessellation_shader : require
layout(quads, equal_spacing) in;
uniform int index;
in vec4 color[];
out vec4 fscolor;
#define INTERP_QUADj(INj, OUT) do { \
vec4 v[4]; \
for (int j = 0; j < 4; j++) v[j] = INj; \
OUT = mix(mix(v[0], v[1], gl_TessCoord[0]), mix(v[2], v[3], gl_TessCoord[0]), \
gl_TessCoord[1]); \
} while(false)
void main() {
INTERP_QUADj(color[j], fscolor);
INTERP_QUADj(gl_in[j].gl_Position, gl_Position);
}
[fragment shader]
#version 150
in vec4 fscolor;
out vec4 outcolor;
void main()
{
outcolor = fscolor;
}
[test]
clear color 0.5 0.5 0.5 0.5
clear
patch parameter vertices 4
uniform int index 0
draw rect patch -1 -1 0.09 0.09
#draw arrays GL_PATCHES 0 4
probe rgb 6 6 0.0 1.0 0.0
uniform int index 1
draw rect patch -0.9 -1 0.09 0.09
probe rgb 18 6 0.0 1.0 0.0
uniform int index 2
draw rect patch -0.8 -1 0.09 0.09
probe rgb 31 6 0.0 1.0 0.0
uniform int index 3
draw rect patch -0.7 -1 0.09 0.09
probe rgb 43 6 0.0 1.0 0.0
uniform int index 4
draw rect patch -0.6 -1 0.09 0.09
probe rgb 56 6 0.0 1.0 0.0
uniform int index 5
draw rect patch -0.5 -1 0.09 0.09
probe rgb 68 6 0.0 1.0 0.0
uniform int index 6
draw rect patch -0.4 -1 0.09 0.09
probe rgb 81 6 0.0 1.0 0.0
uniform int index 7
draw rect patch -0.3 -1 0.09 0.09
probe rgb 93 6 0.0 1.0 0.0
uniform int index 8
draw rect patch -0.2 -1 0.09 0.09
probe rgb 106 6 0.0 1.0 0.0
uniform int index 9
draw rect patch -0.1 -1 0.09 0.09
probe rgb 118 6 0.0 1.0 0.0
uniform int index 10
draw rect patch 0 -1 0.09 0.09
probe rgb 131 6 0.0 1.0 0.0
uniform int index 11
draw rect patch 0.1 -1 0.09 0.09
probe rgb 143 6 0.0 1.0 0.0
uniform int index 12
draw rect patch 0.2 -1 0.09 0.09
probe rgb 156 6 0.0 1.0 0.0
uniform int index 13
draw rect patch 0.3 -1 0.09 0.09
probe rgb 168 6 0.0 1.0 0.0
uniform int index 14
draw rect patch 0.4 -1 0.09 0.09
probe rgb 181 6 0.0 1.0 0.0
uniform int index 15
draw rect patch 0.5 -1.0 0.09 0.09
probe rgb 193 6 0.0 1.0 0.0
uniform int index 16
draw rect patch -1 -0.9 0.09 0.09
probe rgb 6 18 0.0 1.0 0.0
uniform int index 17
draw rect patch -0.9 -0.9 0.09 0.09
probe rgb 18 18 0.0 1.0 0.0
uniform int index 18
draw rect patch -0.8 -0.9 0.09 0.09
probe rgb 31 18 0.0 1.0 0.0
uniform int index 19
draw rect patch -0.7 -0.9 0.09 0.09
probe rgb 43 18 0.0 1.0 0.0
uniform int index 20
draw rect patch -0.6 -0.9 0.09 0.09
probe rgb 56 18 0.0 1.0 0.0
uniform int index 21
draw rect patch -0.5 -0.9 0.09 0.09
probe rgb 68 18 0.0 1.0 0.0
uniform int index 22
draw rect patch -0.4 -0.9 0.09 0.09
probe rgb 81 18 0.0 1.0 0.0
uniform int index 23
draw rect patch -0.3 -0.9 0.09 0.09
probe rgb 93 18 0.0 1.0 0.0
uniform int index 24
draw rect patch -0.2 -0.9 0.09 0.09
probe rgb 106 18 0.0 1.0 0.0
uniform int index 25
draw rect patch -0.1 -0.9 0.09 0.09
probe rgb 118 18 0.0 1.0 0.0
uniform int index 26
draw rect patch 0 -0.9 0.09 0.09
probe rgb 131 18 0.0 1.0 0.0
uniform int index 27
draw rect patch 0.1 -0.9 0.09 0.09
probe rgb 143 18 0.0 1.0 0.0
uniform int index 28
draw rect patch 0.2 -0.9 0.09 0.09
probe rgb 156 18 0.0 1.0 0.0
uniform int index 29
draw rect patch 0.3 -0.9 0.09 0.09
probe rgb 168 18 0.0 1.0 0.0
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