mirror of
https://github.com/encounter/dawn-cmake.git
synced 2025-07-08 06:05:55 +00:00
9b54a2e53c
This change implements pointers and references as described by the WGSL specification change in https://github.com/gpuweb/gpuweb/pull/1569. reader/spirv: * Now emits address-of `&expr` and indirection `*expr` operators as needed. * As an identifier may now resolve to a pointer or reference type depending on whether the declaration is a `var`, `let` or parameter, `Function::identifier_values_` has been changed from an ID set to an ID -> Type* map. resolver: * Now correctly resolves all expressions to either a value type, reference type or pointer type. * Validates pointer / reference rules on assignment, `var` and `let` construction, and usage. * Handles the address-of and indirection operators. * No longer does any implicit loads of pointer types. * Storage class validation is still TODO (crbug.com/tint/809) writer/spirv: * Correctly handles variables and expressions of pointer and reference types, emitting OpLoads where necessary. test: * Lots of new test cases Fixed: tint:727 Change-Id: I77d3281590e35e5a3122f5b74cdeb71a6fe51f74 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50740 Commit-Queue: Ben Clayton <bclayton@chromium.org> Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: David Neto <dneto@google.com>
24 lines
566 B
Plaintext
24 lines
566 B
Plaintext
#include <metal_stdlib>
|
|
|
|
using namespace metal;
|
|
struct tint_symbol_1 {
|
|
int VertexIndex [[vertex_id]];
|
|
};
|
|
struct tint_symbol_2 {
|
|
float4 value [[position]];
|
|
};
|
|
struct tint_symbol_3 {
|
|
float4 value [[color(0)]];
|
|
};
|
|
|
|
constant float2 pos[3] = {float2(0.0f, 0.5f), float2(-0.5f, -0.5f), float2(0.5f, -0.5f)};
|
|
vertex tint_symbol_2 vtx_main(tint_symbol_1 tint_symbol [[stage_in]]) {
|
|
int const VertexIndex = tint_symbol.VertexIndex;
|
|
return {float4(pos[VertexIndex], 0.0f, 1.0f)};
|
|
}
|
|
|
|
fragment tint_symbol_3 frag_main() {
|
|
return {float4(1.0f, 0.0f, 0.0f, 1.0f)};
|
|
}
|
|
|