#version 430
#extension GL_3DL_array_objects : enable
out Vertex {
vec4 Position; // API transform/feedback will use “Vertex.Position”
vec2 Texture;
} Coords; // shader will use “Coords.Position”
out Vertex2 {
vec4 Color; // API will use “Color”
};
uniform Transform { // API uses “Transform[2]” to refer to instance 2
mat4 ModelViewMatrix;
mat4 ModelViewProjectionMatrix;
vec4 a[]; // array will get implicitly sized
float Deformation;
} transforms[4];
layout(location = 3) in vec4 normal;
layout(location = 6) in vec4 colors[3];
layout(location = 9) in mat4 transforms2[2];
layout(location = 3) struct S {
vec3 a1;
mat2 b;
vec4 c[2];
} s;
layout(triangles, invocations = 6) in;
layout(lines) in; // legal for Color2, input size is 2, matching Color2
layout(triangle_strip, max_vertices = 60) out; // order does not matter
layout(max_vertices = 60) out; // redeclaration okay
layout(triangle_strip) out; // redeclaration okay
//layout(points) out; // error, contradicts triangle_strip
//layout(max_vertices = 30) out; // error, contradicts 60
layout(stream = 1) out;
layout(stream=1) out; // default is now stream 1
out vec4 var1; // var1 gets default stream (1)
layout(stream=2) out Block1 { // "Block1" belongs to stream 2
layout(stream=2) vec4 var2; // redundant block member stream decl
layout(stream=3) vec2 var3; // ILLEGAL (must match block stream)
vec3 var4; // belongs to stream 2
};
layout(stream=0) out; // default is now stream 0
out vec4 var5; // var5 gets default stream (0)
out Block2 { // "Block2" gets default stream (0)
vec4 var6;
};
layout(stream=3) out vec4 var7; // var7 belongs to stream 3
layout(shared, column_major) uniform;
layout(shared, column_major) buffer;
layout(row_major, column_major)
layout(shared, row_major) uniform; // default is now shared and row_major
layout(std140) uniform Transform2 { // layout of this block is std140
mat4 M1; // row_major
layout(column_major) mat4 M2; // column major
mat3 N1; // row_major
};
layout(column_major) uniform T3 { // shared and column_major
mat4 M13; // column_major
layout(row_major) mat4 m14; // row major
mat3 N12; // column_major
};
// in one compilation unit...
layout(binding=3) uniform sampler2D s17; // s bound to unit 3
// in another compilation unit...
uniform sampler2D s17; // okay, s still bound at 3
// in another compilation unit...
//layout(binding=4) uniform sampler2D s; // ERROR: contradictory bindings
layout (binding = 2, offset = 4) uniform atomic_uint a2;
layout (binding = 2) uniform atomic_uint bar;
layout (binding = 2, offset = 4) uniform atomic_uint;
layout (binding = 2) uniform atomic_uint bar; // offset is 4
layout (offset = 8) uniform atomic_uint bar23; // error, no default binding
layout (binding=3, offset=4) uniform atomic_uint a2; // offset = 4
layout (binding=2) uniform atomic_uint b2; // offset = 0
layout (binding=3) uniform atomic_uint c2; // offset = 8
layout (binding=2) uniform atomic_uint d2; // offset = 4
//layout (offset=4) // error, must include binding
//layout (binding=1, offset=0) a; // okay
//layout (binding=2, offset=0) b; // okay
//layout (binding=1, offset=0) c; // error, offsets must not be shared
// // between a and c
//layout (binding=1, offset=2) d; // error, overlaps offset 0 of a
flat in vec4 gl_FrontColor; // input to geometry shader, no “gl_in[]”
flat out vec4 gl_FrontColor; // output from geometry shader
invariant gl_Position; // make existing gl_Position be invariant
out vec3 ColorInv;
invariant ColorIvn; // make existing Color be invariant
invariant centroid out vec3 Color4;
precise out vec4 position;
out vec3 Color5;
precise Color5; // make existing Color be precise
in vec4 a, b, c, d;
precise out vec4 v;
coherent buffer Block {
readonly vec4 member1;
vec4 member2;
};
buffer Block2a {
coherent readonly vec4 member1A;
coherent vec4 member2A;
};
shared vec4 shv;
vec4 funcA(restrict image2D a) { }
vec4 funcB(image2D a) { }
layout(rgba32f) uniform image2D img1;
layout(rgba32f) coherent uniform image2D img2;
float func(float e, float f, float g, float h)
{
return (e*f) + (g*h); // no constraint on order or
// operator consistency
}
float func2(float e, float f, float g, float h)
{
precise float result = (e*f) + (g*h); // ensures same precision for
// the two multiplies
return result;
}
float func3(float i, float j, precise out float k)
{
k = i * i + j; // precise, due to <k> declaration
}
void main()
{
vec3 r = vec3(a * b); // precise, used to compute v.xyz
vec3 s = vec3(c * d); // precise, used to compute v.xyz
v.xyz = r + s; // precise
v.w = (a.w * b.w) + (c.w * d.w); // precise
v.x = func(a.x, b.x, c.x, d.x); // values computed in func()
// are NOT precise
v.x = func2(a.x, b.x, c.x, d.x); // precise!
func3(a.x * b.x, c.x * d.x, v.x); // precise!
funcA(img1); // OK, adding "restrict" is allowed, ERROR, changing formats
funcB(img2); // illegal, stripping "coherent" is not, ERROR, changing formats
{
struct light {
float intensity;
vec3 position;
};
light lightVar = light(3.0, vec3(1.0, 2.0, 3.0));
}
{
const float c[3] = float[3](5.0, 7.2, 1.1);
const float d[3] = float[](5.0, 7.2, 1.1);
float g;
float a[5] = float[5](g, 1, g, 2.3, g);
float b[3];
b = float[3](g, g + 1.0, g + 2.0);
}
{
vec4 b[2] = { vec4(1.0), vec4(1.0) };
vec4[3][2](b, b, b); // constructor
vec4[][2](b, b, b); // constructor, valid, size deduced
vec4[3][](b, b, b); // compile-time error, invalid type constructed
}
}