aiden/video-shader-toys
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This commit is contained in:
Aiden
2026-05-08 18:07:45 +10:00
parent eede6938cb
commit f322abf79a
24 changed files with 270 additions and 43 deletions
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35
apps/LoopThroughWithOpenGLCompositing/gl/shader/GlShaderSources.cpp
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@@ -90,12 +90,17 @@ const char* kOutputPackFragmentShaderSource =
"layout(binding = 0) uniform sampler2D uOutputRgb;\n"
"uniform vec2 uOutputVideoResolution;\n"
"uniform float uActiveV210Words;\n"
"uniform int uOutputPackFormat;\n"
"in vec2 vTexCoord;\n"
"layout(location = 0) out vec4 fragColor;\n"
"vec3 rgbAt(int x, int y)\n"
"vec4 rgbaAt(int x, int y)\n"
"{\n"
" ivec2 size = ivec2(max(uOutputVideoResolution, vec2(1.0, 1.0)));\n"
" return clamp(texelFetch(uOutputRgb, ivec2(clamp(x, 0, size.x - 1), clamp(y, 0, size.y - 1)), 0).rgb, vec3(0.0), vec3(1.0));\n"
" return clamp(texelFetch(uOutputRgb, ivec2(clamp(x, 0, size.x - 1), clamp(y, 0, size.y - 1)), 0), vec4(0.0), vec4(1.0));\n"
"}\n"
"vec3 rgbAt(int x, int y)\n"
"{\n"
" return rgbaAt(x, y).rgb;\n"
"}\n"
"vec3 rgbToLegalYcbcr10(vec3 rgb)\n"
"{\n"
@@ -112,9 +117,35 @@ const char* kOutputPackFragmentShaderSource =
"{\n"
" return vec4(float(word & 255u), float((word >> 8) & 255u), float((word >> 16) & 255u), float((word >> 24) & 255u)) / 255.0;\n"
"}\n"
"vec4 bigEndianWordToBytes(uint word)\n"
"{\n"
" return vec4(float((word >> 24) & 255u), float((word >> 16) & 255u), float((word >> 8) & 255u), float(word & 255u)) / 255.0;\n"
"}\n"
"vec4 packAy10Word(ivec2 outCoord)\n"
"{\n"
" ivec2 size = ivec2(max(uOutputVideoResolution, vec2(1.0, 1.0)));\n"
" if (outCoord.x >= size.x)\n"
" return vec4(0.0);\n"
" int pixelBase = (outCoord.x / 2) * 2;\n"
" int y = outCoord.y;\n"
" vec4 rgba0 = rgbaAt(pixelBase + 0, y);\n"
" vec4 rgba1 = rgbaAt(pixelBase + 1, y);\n"
" vec3 c0 = rgbToLegalYcbcr10(rgba0.rgb);\n"
" vec3 c1 = rgbToLegalYcbcr10(rgba1.rgb);\n"
" float chroma = (outCoord.x & 1) == 0 ? round((c0.y + c1.y) * 0.5) : round((c0.z + c1.z) * 0.5);\n"
" float alpha = round(clamp(((outCoord.x & 1) == 0 ? rgba0.a : rgba1.a), 0.0, 1.0) * 1023.0);\n"
" float luma = (outCoord.x & 1) == 0 ? c0.x : c1.x;\n"
" uint word = ((uint(luma) & 1023u) << 22) | ((uint(chroma) & 1023u) << 12) | ((uint(alpha) & 1023u) << 2);\n"
" return bigEndianWordToBytes(word);\n"
"}\n"
"void main()\n"
"{\n"
" ivec2 outCoord = ivec2(gl_FragCoord.xy);\n"
" if (uOutputPackFormat == 2)\n"
" {\n"
" fragColor = packAy10Word(outCoord);\n"
" return;\n"
" }\n"
" if (float(outCoord.x) >= uActiveV210Words)\n"
" {\n"
" fragColor = vec4(0.0);\n"