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https://github.com/mamedev/mame.git
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d15d53c728
- fixed target dimensions of bloom levels, which results in a much better alignment especially for game with very low resolution (therefore current bloom settings might look a little less intense than before) - small cleanups (nw)
92 lines
2.3 KiB
HLSL
92 lines
2.3 KiB
HLSL
// license:BSD-3-Clause
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// copyright-holders:Ryan Holtz
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//-----------------------------------------------------------------------------
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// Prescale Effect
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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// Sampler Definitions
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//-----------------------------------------------------------------------------
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texture Diffuse;
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sampler DiffuseSampler = sampler_state
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{
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Texture = <Diffuse>;
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MipFilter = NONE;
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MinFilter = NONE;
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MagFilter = NONE;
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AddressU = CLAMP;
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AddressV = CLAMP;
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AddressW = CLAMP;
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};
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//-----------------------------------------------------------------------------
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// Vertex Definitions
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//-----------------------------------------------------------------------------
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struct VS_OUTPUT
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{
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float4 Position : POSITION;
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float2 TexCoord : TEXCOORD0;
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};
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struct VS_INPUT
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{
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float4 Position : POSITION;
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float4 Color : COLOR0;
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float2 TexCoord : TEXCOORD0;
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float2 Unused : TEXCOORD1;
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};
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struct PS_INPUT
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{
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float2 TexCoord : TEXCOORD0;
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};
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//-----------------------------------------------------------------------------
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// Prescale Vertex Shader
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//-----------------------------------------------------------------------------
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uniform float2 ScreenDims;
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uniform float2 TargetDims;
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VS_OUTPUT vs_main(VS_INPUT Input)
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{
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VS_OUTPUT Output = (VS_OUTPUT)0;
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Output.Position = float4(Input.Position.xyz, 1.0f);
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Output.Position.xy /= ScreenDims;
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Output.Position.y = 1.0f - Output.Position.y; // flip y
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Output.Position.xy -= 0.5f; // center
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Output.Position.xy *= 2.0f; // zoom
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Output.TexCoord = Input.TexCoord;
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Output.TexCoord += 0.5f / TargetDims; // half texel offset correction (DX9)
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return Output;
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}
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//-----------------------------------------------------------------------------
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// Prescale Pixel Shader
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//-----------------------------------------------------------------------------
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float4 ps_main(PS_INPUT Input) : COLOR
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{
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return tex2D(DiffuseSampler, Input.TexCoord);
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}
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//-----------------------------------------------------------------------------
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// Prescale Technique
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//-----------------------------------------------------------------------------
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technique DefaultTechnique
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{
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pass Pass0
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{
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Lighting = FALSE;
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VertexShader = compile vs_3_0 vs_main();
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PixelShader = compile ps_3_0 ps_main();
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}
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}
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