Differential D13910 Diff 47377 source/blender/draw/engines/workbench/shaders/workbench_volume_frag.glsl

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


	#pragma BLENDER_REQUIRE(common_math_lib.glsl)			#pragma BLENDER_REQUIRE(common_math_lib.glsl)
	#pragma BLENDER_REQUIRE(common_view_lib.glsl)			#pragma BLENDER_REQUIRE(common_view_lib.glsl)
	#pragma BLENDER_REQUIRE(gpu_shader_common_obinfos_lib.glsl)
	#pragma BLENDER_REQUIRE(workbench_data_lib.glsl)
	#pragma BLENDER_REQUIRE(workbench_common_lib.glsl)			#pragma BLENDER_REQUIRE(workbench_common_lib.glsl)

	uniform sampler2D depthBuffer;

	uniform sampler3D densityTexture;
	uniform sampler3D shadowTexture;
	uniform sampler3D flameTexture;
	uniform usampler3D flagTexture;
	uniform sampler1D flameColorTexture;
	uniform sampler1D transferTexture;
	uniform mat4 volumeObjectToTexture;

	uniform int samplesLen = 256;
	uniform float noiseOfs = 0.0;
	uniform float stepLength; /* Step length in local space. */
	uniform float densityScale; /* Simple Opacity multiplicator. */
	uniform float gridScale; /* Multiplicator for grid scaling. */
	uniform vec3 activeColor;

	uniform float slicePosition;
	uniform int sliceAxis; /* -1 is no slice, 0 is X, 1 is Y, 2 is Z. */

	uniform bool showPhi = false;
	uniform bool showFlags = false;
	uniform bool showPressure = false;

	#ifdef VOLUME_SLICE
	in vec3 localPos;
	#endif

	out vec4 fragColor;

	float phase_function_isotropic()			float phase_function_isotropic()
	{			{
	return 1.0 / (4.0 * M_PI);			return 1.0 / (4.0 * M_PI);
	}			}

	float line_unit_box_intersect_dist(vec3 lineorigin, vec3 linedirection)			float line_unit_box_intersect_dist(vec3 lineorigin, vec3 linedirection)
	{			{
	/* https://seblagarde.wordpress.com/2012/09/29/image-based-lighting-approaches-and-parallax-corrected-cubemap/			/* https://seblagarde.wordpress.com/2012/09/29/image-based-lighting-approaches-and-parallax-corrected-cubemap/
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