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annotate shaders/default.f.glsl @ 2103:522d04e2adcd

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Fix regression in booting games with Japanese Mega CD BIOS
author Michael Pavone <pavone@retrodev.com>
date Fri, 11 Feb 2022 22:55:01 -0800
parents f3cca4b3f17a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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32f053ad9b02 Basic OpenGL rendering is working
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1
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2 uniform sampler2D textures[2];
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f3cca4b3f17a Allow use of NPOT textures as a config option. Useful for some mobile GPUs
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3 uniform mediump vec2 texsize;
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4
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fa9ae059e4d3 Added support for GLES in addition to desktop GL
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5 varying mediump vec2 texcoord;
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7 void main()
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8 {
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f3cca4b3f17a Allow use of NPOT textures as a config option. Useful for some mobile GPUs
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parents: 1658
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9 mediump vec2 modifiedCoord0 = vec2(texcoord.x, (floor(texcoord.y * texsize.y + 0.25) + 0.5)/texsize.y);
f3cca4b3f17a Allow use of NPOT textures as a config option. Useful for some mobile GPUs
Michael Pavone <pavone@retrodev.com>
parents: 1658
diff changeset
10 mediump vec2 modifiedCoord1 = vec2(texcoord.x, (floor(texcoord.y * texsize.y - 0.25) + 0.5)/texsize.y);
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e97b80e3bd76 Support interlace mode with OpenGL backend
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parents: 488
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11 gl_FragColor = mix(
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957325c990d5 Fix texture coordinate offsets in default shader so things look right with really high resolutions and weird multiples of native
Michael Pavone <pavone@retrodev.com>
parents: 1406
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12 texture2D(textures[1], modifiedCoord1),
957325c990d5 Fix texture coordinate offsets in default shader so things look right with really high resolutions and weird multiples of native
Michael Pavone <pavone@retrodev.com>
parents: 1406
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13 texture2D(textures[0], modifiedCoord0),
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f3cca4b3f17a Allow use of NPOT textures as a config option. Useful for some mobile GPUs
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parents: 1658
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14 (sin(texcoord.y * texsize.y * 6.283185307) + 1.0) * 0.5
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e97b80e3bd76 Support interlace mode with OpenGL backend
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15 );
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16 }