3e2fe2b007
Add some comments explaining why different APIs flip the way they do. Remove flip from Metal code generator and reverse the way flipping occurs in Metal backend. Change-Id: Ibec71e8d96c66d4b34b5ce6417056674090f979c Reviewed-on: https://skia-review.googlesource.com/c/skia/+/413236 Reviewed-by: Brian Osman <brianosman@google.com> Reviewed-by: Jim Van Verth <jvanverth@google.com> Commit-Queue: Brian Salomon <bsalomon@google.com>
20 lines
637 B
Metal
20 lines
637 B
Metal
#include <metal_stdlib>
|
|
#include <simd/simd.h>
|
|
using namespace metal;
|
|
struct Uniforms {
|
|
float4 sk_RTAdjust;
|
|
};
|
|
struct Inputs {
|
|
};
|
|
struct Outputs {
|
|
float4 sk_Position [[position]];
|
|
float sk_PointSize [[point_size]];
|
|
};
|
|
vertex Outputs vertexMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], uint sk_VertexID [[vertex_id]], uint sk_InstanceID [[instance_id]]) {
|
|
Outputs _out;
|
|
(void)_out;
|
|
_out.sk_Position = float4(1.0);
|
|
_out.sk_Position = float4(_out.sk_Position.xy * _uniforms.sk_RTAdjust.xz + _out.sk_Position.ww * _uniforms.sk_RTAdjust.yw, 0.0, _out.sk_Position.w);
|
|
return _out;
|
|
}
|