79 lines
1.5 KiB
HLSL
79 lines
1.5 KiB
HLSL
float2 vInvScreenSize;
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float2 vPosition;
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float2 vGlyphScale;
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float2 vCharCoord;
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float2 vTexScale;
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Texture2D txDiffuse;
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SamplerState samPoint {
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Filter = MIN_MAG_MIP_POINT;
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AddressU = Wrap;
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AddressV = Wrap;
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};
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struct VS_INPUT
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{
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float2 Pos : POSITION;
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};
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struct GSPS_INPUT
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{
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float4 Pos : SV_POSITION;
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float2 Tex : TEXCOORD0;
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};
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GSPS_INPUT VS(VS_INPUT input)
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{
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GSPS_INPUT output = (GSPS_INPUT)0;
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output.Pos = float4(0, 0, 0, 0);
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output.Tex = float2(0, 0);
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return output;
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}
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static const float2 vertices[] = {
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float2( 0.0f, 0.0f), // -- top right
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float2( 1.0f, 0.0f), // -- top left
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float2( 0.0f, -1.0f), // -- bottom right
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float2( 1.0f, -1.0f), // -- bottom left
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};
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[maxvertexcount(4)]
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void GS (point GSPS_INPUT input[1], inout TriangleStream<GSPS_INPUT> TriStream)
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{
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GSPS_INPUT output;
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for (int i = 0; i < 4; i++) {
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float2 Pos;
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Pos = vertices[i] * vGlyphScale + vPosition;
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Pos = Pos * vInvScreenSize + float2(-1, 1);
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output.Pos = float4(Pos.xy, 0, 1);
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output.Tex = vertices[i] * float2(1, -1);
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output.Tex = (output.Tex + vCharCoord) * vTexScale;
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TriStream.Append(output);
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}
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TriStream.RestartStrip();
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}
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float4 PS(GSPS_INPUT input) : SV_Target
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{
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float4 texColor = txDiffuse.Sample(samPoint, input.Tex);
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float c = texColor.x == 0 ? 0.0 : 1.0;
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return float4(c, c, c, 1);
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}
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technique10 Font
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{
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pass P0
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{
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SetVertexShader(CompileShader(vs_4_0, VS()));
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SetGeometryShader(CompileShader(gs_4_0, GS()));
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SetPixelShader(CompileShader(ps_4_0, PS()));
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}
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}
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