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53895cac2f
Add a debug binding and mode to highlight (green tint) what has been rendered through vulkan-renderer composition. This is useful to visually identify/debug clients which have been offloaded to DRM planes, since those won't go through the renderer composition process and therefore won't be highlighted the same way. Since this is the first debug mode in vulkan-renderer, add some initial infrastructure to handle debug bindings. Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
62 lines
1.3 KiB
GLSL
62 lines
1.3 KiB
GLSL
#version 450
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layout(binding = 1) uniform _ubo {
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uniform vec4 unicolor;
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uniform float view_alpha;
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} ubo;
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layout(binding = 2) uniform sampler2D tex;
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layout(location = 1) in vec2 v_texcoord;
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layout(location = 0) out vec4 fragcolor;
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layout(constant_id = 0) const int c_variant = 0;
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layout(constant_id = 1) const bool c_input_is_premult = false;
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layout(constant_id = 2) const bool c_green_tint = false;
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#define PIPELINE_VARIANT_RGBA 1
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#define PIPELINE_VARIANT_RGBX 2
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#define PIPELINE_VARIANT_SOLID 3
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#define PIPELINE_VARIANT_EXTERNAL 4
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vec4
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sample_input_texture()
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{
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if (c_variant == PIPELINE_VARIANT_SOLID)
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return ubo.unicolor;
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if (c_variant == PIPELINE_VARIANT_EXTERNAL ||
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c_variant == PIPELINE_VARIANT_RGBA ||
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c_variant == PIPELINE_VARIANT_RGBX) {
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vec4 color;
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color = texture(tex, v_texcoord);
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if (c_variant == PIPELINE_VARIANT_RGBX)
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color.a = 1.0;
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return color;
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}
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/* Never reached, bad variant value. */
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return vec4(1.0, 0.3, 1.0, 1.0);
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}
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void main() {
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vec4 color;
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/* Electrical (non-linear) RGBA values, may be premult or not */
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color = sample_input_texture();
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/* Ensure pre-multiplied for blending */
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if (!c_input_is_premult)
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color.rgb *= color.a;
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color *= ubo.view_alpha;
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/* Fragment shader (composition) debug */
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if (c_green_tint)
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color = vec4(0.0, 0.3, 0.0, 0.2) + color * 0.8;
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fragcolor = color;
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}
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