1layout(binding=0, rgba32f) readonly texture2D src; 2layout(binding=1, rgba32f) writeonly texture2D dest; 3//layout(binding=2, rgba32f) texture2D multipurpose; 4 5// If we add support for read-write textures in SkSL, uncomment `needs_all_access`. 6//void needs_all_access(texture2D t) {} 7 8void overload(layout(rgba32f) readonly texture2D t) {} 9void overload(layout(rgba32f) writeonly texture2D t, int) {} 10 11void main() { 12 //needs_all_access(src); // BAD 13 //needs_all_access(dest); // BAD 14 //needs_all_access(multipurpose); // OK 15 16 textureRead(dest, sk_GlobalInvocationID.xy); // BAD 17 textureWrite(src, sk_GlobalInvocationID.xy, half4(1)); // BAD 18 19 overload(src); // OK: overload(readonly texture2D t) exists 20 overload(src, 1); // BAD: overload(readonly texture2D t, int) missing 21 overload(dest); // BAD: overload(writeonly texture2D t) missing 22 overload(dest, 1); // OK: overload(writeonly texture2D t, int) exists 23} 24 25// If we add support for read-write textures in SkSL, uncomment `function_param_honors_all_access`. 26//void function_param_honors_all_access(texture2D t) { 27// //needs_all_access(t); // OK 28// textureWidth(t); // OK 29// textureRead(t, sk_GlobalInvocationID.xy); // OK 30// textureWrite(t, sk_GlobalInvocationID.xy, half4(1)); // OK 31//} 32 33void function_param_honors_readonly(layout(rgba32f) readonly texture2D t) { 34 //needs_all_access(t); // BAD 35 textureWidth(t); // OK 36 textureRead(t, sk_GlobalInvocationID.xy); // OK 37 textureWrite(t, sk_GlobalInvocationID.xy, half4(1)); // BAD 38} 39 40void function_param_honors_writeonly(layout(rgba32f) writeonly texture2D t) { 41 //needs_all_access(t); // BAD 42 textureWidth(t); // OK 43 textureRead(t, sk_GlobalInvocationID.xy); // BAD 44 textureWrite(t, sk_GlobalInvocationID.xy, half4(1)); // OK 45} 46 47/*%%* 48no match for textureRead(writeonlyTexture2D, uint2) 49no match for textureWrite(readonlyTexture2D, uint2, half4) 50no match for overload(readonlyTexture2D, int) 51no match for overload(writeonlyTexture2D) 52no match for textureWrite(readonlyTexture2D, uint2, half4) 53no match for textureRead(writeonlyTexture2D, uint2) 54*%%*/ 55