SPIRV-Cross/reference/shaders-msl/vulkan/vert/multiview.multiview.nocompat.vk.vert
Chip Davis 53080ecca8 MSL: Fix multiview view index calculation with a non-zero base instance.
Account for a non-zero base instance when calculating the view index and
the "real" instance index. Before, it was likely broken with a non-zero
base instance, since the calculated instance index could be less than
the base instance.
2020-08-31 20:33:44 -05:00

32 lines
836 B
GLSL

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct MVPs
{
float4x4 MVP[2];
};
struct main0_out
{
float4 gl_Position [[position]];
uint gl_Layer [[render_target_array_index]];
};
struct main0_in
{
float4 Position [[attribute(0)]];
};
vertex main0_out main0(main0_in in [[stage_in]], constant uint* spvViewMask [[buffer(24)]], constant MVPs& _19 [[buffer(0)]], uint gl_InstanceIndex [[instance_id]], uint gl_BaseInstance [[base_instance]])
{
main0_out out = {};
uint gl_ViewIndex = spvViewMask[0] + (gl_InstanceIndex - gl_BaseInstance) % spvViewMask[1];
gl_InstanceIndex = (gl_InstanceIndex - gl_BaseInstance) / spvViewMask[1] + gl_BaseInstance;
out.gl_Position = _19.MVP[int(gl_ViewIndex)] * in.Position;
out.gl_Layer = gl_ViewIndex - spvViewMask[0];
return out;
}