зеркало из https://github.com/stride3d/xkslang.git
50 строки
1.7 KiB
GLSL
50 строки
1.7 KiB
GLSL
uniform int idx;
|
|
uniform float3x2 um;
|
|
|
|
struct PS_OUTPUT
|
|
{
|
|
float4 Color : SV_Target0;
|
|
};
|
|
|
|
PS_OUTPUT main()
|
|
{
|
|
// matrices of 3 rows, 2 columns (regardless of row vs col major storage)
|
|
const float3x2 m1 = { { 10, 11 }, // row-wise initialization
|
|
{ 12, 13 },
|
|
{ 14, 15 } };
|
|
|
|
const float3x2 m2 = { 20, 21, 22, 23, 24, 25 }; // component-wise matrix initialization is allowed
|
|
const float3x2 m3 = { 30, 31, 33, 33, 34, 35 }; // component-wise matrix initialization is allowed
|
|
|
|
// These can be observed in the AST post-const folding to ensure we obtain the right value,
|
|
// as given in comments to the right of each line. Note that the first indirection into a
|
|
// matrix returns a row vector.
|
|
float e1_00 = m1[0][0]; // 10
|
|
float e1_01 = m1[0][1]; // 11
|
|
float e1_10 = m1[1][0]; // 12
|
|
float e1_11 = m1[1][1]; // 13
|
|
float e1_20 = m1[2][0]; // 14
|
|
float e1_21 = m1[2][1]; // 15
|
|
|
|
float e2_00 = m2[0][0]; // 20
|
|
float e2_01 = m2[0][1]; // 21
|
|
float e2_10 = m2[1][0]; // 22
|
|
float e2_11 = m2[1][1]; // 23
|
|
float e2_20 = m2[2][0]; // 24
|
|
float e2_21 = m2[2][1]; // 25
|
|
|
|
// float e3a_00 = m3._m00; // TODO... also as an lvalue for a non-const matrix
|
|
// float e3b_00 = m3._11; // TODO... also as an lvalue for a non-const matrix
|
|
|
|
float2 r0a = m1[0]; // row0: 10,11: types must match: constant index into constant
|
|
float2 r1a = m1[1]; // row1: 12,13: ...
|
|
float2 r2a = m1[2]; // row2: 14,15: ...
|
|
|
|
float2 r0b = m2[idx]; // types should match: variable index into constant
|
|
float2 r0c = um[idx]; // types should match: variable index into variable
|
|
|
|
PS_OUTPUT psout;
|
|
psout.Color = e2_11; // 23
|
|
return psout;
|
|
}
|