Differential D13910 Diff 47467 source/blender/draw/engines/workbench/shaders/workbench_matcap_lib.glsl

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source/blender/draw/engines/workbench/shaders/workbench_matcap_lib.glsl


	#pragma BLENDER_REQUIRE(workbench_data_lib.glsl)

	vec2 matcap_uv_compute(vec3 I, vec3 N, bool flipped)			vec2 matcap_uv_compute(vec3 I, vec3 N, bool flipped)
	{			{
	/* Quick creation of an orthonormal basis */			/* Quick creation of an orthonormal basis */
	float a = 1.0 / (1.0 + I.z);			float a = 1.0 / (1.0 + I.z);
	float b = -I.x * I.y * a;			float b = -I.x * I.y * a;
	vec3 b1 = vec3(1.0 - I.x * I.x * a, b, -I.x);			vec3 b1 = vec3(1.0 - I.x * I.x * a, b, -I.x);
	vec3 b2 = vec3(b, 1.0 - I.y * I.y * a, -I.y);			vec3 b2 = vec3(b, 1.0 - I.y * I.y * a, -I.y);
	vec2 matcap_uv = vec2(dot(b1, N), dot(b2, N));			vec2 matcap_uv = vec2(dot(b1, N), dot(b2, N));
	if (flipped) {			if (flipped) {
	matcap_uv.x = -matcap_uv.x;			matcap_uv.x = -matcap_uv.x;
	}			}
	return matcap_uv * 0.496 + 0.5;			return matcap_uv * 0.496 + 0.5;
	}			}

	uniform sampler2D matcapDiffuseImage;			vec3 get_matcap_lighting(
	uniform sampler2D matcapSpecularImage;			sampler2D diffuse_matcap, sampler2D specular_matcap, vec3 base_color, vec3 N, vec3 I)

	vec3 get_matcap_lighting(vec3 base_color, vec3 N, vec3 I)
	{			{
	bool flipped = world_data.matcap_orientation != 0;			bool flipped = world_data.matcap_orientation != 0;
	vec2 uv = matcap_uv_compute(I, N, flipped);			vec2 uv = matcap_uv_compute(I, N, flipped);

	vec3 diffuse = textureLod(matcapDiffuseImage, uv, 0.0).rgb;			vec3 diffuse = textureLod(diffuse_matcap, uv, 0.0).rgb;
	vec3 specular = textureLod(matcapSpecularImage, uv, 0.0).rgb;			vec3 specular = textureLod(specular_matcap, uv, 0.0).rgb;

	return diffuse * base_color + specular * float(world_data.use_specular);			return diffuse * base_color + specular * float(world_data.use_specular);
	}			}