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annotate shaders/default.f.glsl @ 1637:95880d947257

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Fix for VRAM byte write order broke VDP FIFO testing ROM results. This change cleans up VRAM writes and fixes the regression while preserving the correct VRAM byte write order
author Michael Pavone <pavone@retrodev.com>
date Sun, 11 Nov 2018 22:39:29 -0800
parents 957325c990d5
children fa9ae059e4d3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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488
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1 #version 110
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2
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3 uniform sampler2D textures[2];
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4
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5 varying vec2 texcoord;
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6
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7 void main()
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8 {
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9 vec2 modifiedCoord0 = vec2(texcoord.x, (floor(texcoord.y * 512.0 + 0.25) + 0.5)/512.0);
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10 vec2 modifiedCoord1 = vec2(texcoord.x, (floor(texcoord.y * 512.0 - 0.25) + 0.5)/512.0);
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e97b80e3bd76 Support interlace mode with OpenGL backend
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11 gl_FragColor = mix(
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parents: 1406
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12 texture2D(textures[1], modifiedCoord1),
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13 texture2D(textures[0], modifiedCoord0),
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5e4a2ea8219b Minor simplification of default fragment shader
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14 (sin(texcoord.y * 1024.0 * 3.14159265359) + 1.0) * 0.5
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15 );
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16 }