TSL Transpiler: Missing elements

[RenaudRohlinger]

Description

The TSL Transpiler seems to lack a few elements such as mat3, mat4, texelFetch, texture2D and so on. I created a sample to quickly check what's missing.

Reproduction steps

Add a mat3, mat4 ect and the code will not transpile properly.

Code

Sample generated with AI:

float a = 1.0;
vec2 b;
vec3 c;
vec4 d;
mat3 e;
mat4 f;
vec4 g = texture2D();
vec4 h = texture2DArray();

// Basic arithmetic tests
float i = a + 0.5;
vec2 j = b + vec2(1.0, 2.0);
vec3 k = c - vec3(0.5, 0.5, 0.5);
vec4 l = d * vec4(2.0, 2.0, 2.0, 2.0);
mat3 m = e * mat3(1.0);
mat4 n = f + mat4(1.0);

// Vector and matrix multiplication tests
vec3 o = vec3(1.0, 0.0, 0.0) * e;
vec4 p = vec4(1.0, 0.0, 0.0, 1.0) * f;

// Function call tests
vec4 q = texture2D(g, vec2(0.5, 0.5));
vec4 r = texture2DArray(h, vec3(0.5, 0.5, 1.0));

// Conditional tests
if (a > 0.5) {
    a = 2.0;
}

// Loop tests
for (int s = 0; s < 5; s++) {
    a += 1.0;
}

// Texture access tests
vec4 t = texture2D(g, vec2(a, i));
vec4 u = texture2DArray(h, vec3(j.x, j.y, 0.0));

// Complex expression tests
vec4 v = mix(q, r, 0.5);
vec3 w = normalize(vec3(p.x, p.y, p.z));

// Uniform variable tests
uniform mat4 uMatrix;
vec4 x = uMatrix * vec4(1.0, 1.0, 1.0, 1.0);

// Sampler tests
uniform sampler2D uSampler;
vec4 y = texture2D(uSampler, vec2(0.5, 0.5));
// texelFetch tests
ivec2 texelCoord2D = ivec2(10, 20);
vec4 z = texelFetch(uSampler, texelCoord2D, 0);

// texture2DArray tests
uniform sampler2DArray uSampler2DArray;
vec4 aa = texture2DArray(uSampler2DArray, vec3(0.5, 0.5, 1.0));

// textureCube tests
uniform samplerCube uSamplerCube;
vec4 ab = textureCube(uSamplerCube, vec3(1.0, 0.0, 0.0));

// texture3D tests
uniform sampler3D uSampler3D;
vec4 ac = texture3D(uSampler3D, vec3(0.5, 0.5, 0.5));

// Shadow texture tests
uniform sampler2DShadow uSamplerShadow;
float shadowCoord = 0.5;
vec4 ad = shadow2D(uSamplerShadow, vec3(0.5, 0.5, shadowCoord));

// More complex texelFetch test
ivec3 texelCoord3D = ivec3(5, 5, 1);
vec4 ae = texelFetch(uSampler2DArray, texelCoord3D, 0);

// Texture sampling with varying coordinates
vec4 af = textureCube(uSamplerCube, normalize(c));

// Testing texture3D with non-uniform coordinates
vec3 nonUniformCoord = vec3(a, k.x, o.y);
vec4 ag = texture3D(uSampler3D, nonUniformCoord);

vec3 arr[2] = vec3[2](
  vec3(0.,0.,0.),
  vec3(0.,0.,0.),
);

#ifdef USE_UV
#endif

Live example

• webgpu_tsl_transpiler

Version

r160

[Mugen87]

Most of the missing elements presented in this issue should be fixed by the latest PRs. If certain GLSL statements do not work yet, it's best to create separate issues.