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79009d4158
This omission was noticed by Benjamin Otte. Add a premultiply uniform to the external shader, and add a separate premultiply shader for the non-external case.
35 lines
743 B
GLSL
35 lines
743 B
GLSL
// VERTEX_SHADER:
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// external.glsl
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void main() {
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gl_Position = u_projection * u_modelview * vec4(aPosition, 0.0, 1.0);
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vUv = vec2(aUv.x, aUv.y);
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}
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// FRAGMENT_SHADER:
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// external.glsl
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#if defined(GSK_GLES) || defined(GSK_GLES3)
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uniform samplerExternalOES u_external_source;
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#else
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/* Just to make this compile, we won't use it without GLES */
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uniform sampler2D u_external_source;
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#endif
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uniform int u_premultiply;
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void main() {
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/* Open-code this here, since GskTexture() expects a sampler2D */
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#if defined(GSK_GLES) || defined(GSK_LEGACY)
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vec4 color = texture2D(u_external_source, vUv);
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#else
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vec4 color = texture(u_external_source, vUv);
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#endif
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if (u_premultiply == 1)
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color.rgb *= color.a;
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gskSetOutputColor(color);
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}
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