67 lines
1.6 KiB
Plaintext
67 lines
1.6 KiB
Plaintext
#include "common.slang"
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struct VertexShaderInput {
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// Per Vertex
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uint vertex_id : SV_VertexID;
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float3 pos;
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// Per Instance
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float4 pos_size;
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float4 uv0uv1;
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float4 uv2uv3;
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};
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struct VertexShaderOutput {
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float4 pos : SV_POSITION;
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float2 uv;
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};
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struct PixelShaderOutput {
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float4 color : SV_TARGET;
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};
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[shader("vertex")]
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VertexShaderOutput main_vertex(VertexShaderInput input) {
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VertexShaderOutput output;
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float4x4 view_matrix = view(float3(camera_x, camera_y, 0), radians(camera_tilt), camera_distance);
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float4x4 projection_matrix = projection(radians(fovy_degrees), aspect_ratio, NEAR_PLANE);
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float4x4 view_projection_matrix = mul(projection_matrix, view_matrix);
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output.pos = mul(view_projection_matrix, float4(input.pos_size.xy + input.pos.xy, 0, 1));
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switch(input.vertex_id) {
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case 0: output.uv = input.uv0uv1.xy; break;
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case 1: output.uv = input.uv0uv1.zw; break;
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case 2: output.uv = input.uv2uv3.xy; break;
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case 3: output.uv = input.uv2uv3.zw; break;
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}
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return output;
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}
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[[vk::binding(0, 2)]]
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Sampler2D<float4> tex1;
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[[vk::binding(0, 3)]]
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cbuffer fragment_constants {
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float3 tint;
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}
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[shader("pixel")]
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PixelShaderOutput main_fragment(VertexShaderOutput input) {
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PixelShaderOutput output;
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float2 texture_size;
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tex1.GetDimensions(texture_size.x, texture_size.y);
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float2 uv = input.uv * texture_size;
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uv = floor(uv) + min(fract(uv) / fwidth(uv), 1.0) - 0.5;
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uv /= texture_size;
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output.color = tex1.Sample(uv);
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output.color.rgb *= tint.rgb;
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return output;
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}
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