Initial integration

ZeroK-RTS · Jun 26, 2019 · f0f1bf1 · f0f1bf1
1 parent a93c58a
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diff --git a/LuaUI/Widgets/Shaders/outlineShape3.frag b/LuaUI/Widgets/Shaders/outlineShape3.frag
@@ -0,0 +1,72 @@
+#version 150 compatibility
+
+uniform sampler2D modelDepthTex;
+uniform sampler2D mapDepthTex;
+uniform sampler2D modelMiscTex;
+
+uniform vec4 outlineColor;
+
+uniform mat4 projMatrix;
+
+float GetViewSpaceDepth(float depthNDC) {
+	return -projMatrix[3][2] / (projMatrix[2][2] + depthNDC);
+}
+
+#define USE_MATERIAL_INDICES ###USE_MATERIAL_INDICES###
+#define DEPTH_CLIP01 ###DEPTH_CLIP01###
+
+#define NORM2SNORM(value) (value * 2.0 - 1.0)
+#define SNORM2NORM(value) (value * 0.5 + 0.5)
+
+void main() {
+	ivec2 imageCoord = ivec2(gl_FragCoord.xy);
+
+	float mapDepth = texelFetch(mapDepthTex, imageCoord, 0).r;
+	float modelDepth = texelFetch(modelDepthTex, imageCoord, 0).r;
+
+	float modelDepthMin = modelDepth;
+	float modelDepthMax = modelDepth;
+
+	float modelDepth_X;
+
+	modelDepth_X = texelFetchOffset(modelDepthTex, imageCoord, 0, ivec2(-1,  0)).x;
+	modelDepthMin = min(modelDepthMin, modelDepth_X); modelDepthMax = max(modelDepthMax, modelDepth_X);
+
+	modelDepth_X = texelFetchOffset(modelDepthTex, imageCoord, 0, ivec2( 1,  0)).x;
+	modelDepthMin = min(modelDepthMin, modelDepth_X); modelDepthMax = max(modelDepthMax, modelDepth_X);
+
+	modelDepth_X = texelFetchOffset(modelDepthTex, imageCoord, 0, ivec2( 0, -1)).x;
+	modelDepthMin = min(modelDepthMin, modelDepth_X); modelDepthMax = max(modelDepthMax, modelDepth_X);
+
+	modelDepth_X = texelFetchOffset(modelDepthTex, imageCoord, 0, ivec2( 0,  1)).x;
+	modelDepthMin = min(modelDepthMin, modelDepth_X); modelDepthMax = max(modelDepthMax, modelDepth_X);
+
+	#if (DEPTH_CLIP01 == 1)
+		// Nothing. NDC and window/texture space are same for depth
+	#else
+		modelDepthMin = NORM2SNORM(modelDepthMin);
+		modelDepthMax = NORM2SNORM(modelDepthMax);
+	#endif
+
+	modelDepthMin = -GetViewSpaceDepth(modelDepthMin);
+	modelDepthMax = -GetViewSpaceDepth(modelDepthMax);
+
+	bool cond =
+		modelDepthMax / modelDepthMin >= 1.02;
+
+
+	cond = cond && mapDepth >= modelDepth;
+
+	vec4 validUnit = vec4(cond);
+	#if (USE_MATERIAL_INDICES == 1)
+		#define MATERIAL_UNITS_MAX_INDEX 127
+		#define MATERIAL_UNITS_MIN_INDEX 1
+
+		if (cond) {
+			int matIndices = int(texelFetch(modelMiscTex, imageCoord, 0).r * 255.0);
+			validUnit *= float( (matIndices >= MATERIAL_UNITS_MIN_INDEX) && (matIndices <= MATERIAL_UNITS_MAX_INDEX) );
+		}
+	#endif
+
+	gl_FragColor = mix(vec4(0.0), outlineColor, validUnit);
+}