184 lines
8.1 KiB
Python
184 lines
8.1 KiB
Python
import bpy
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import arm.material.cycles as cycles
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import arm.material.mat_state as mat_state
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import arm.material.mat_utils as mat_utils
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def make(context_id):
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con_voxel = mat_state.data.add_context({ 'name': context_id, 'depth_write': False, 'compare_mode': 'always', 'cull_mode': 'none', 'color_write_red': False, 'color_write_green': False, 'color_write_blue': False, 'color_write_alpha': False, 'conservative_raster': True })
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wrd = bpy.data.worlds['Arm']
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if '_NoShadows' in wrd.world_defs:
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is_shadows = False
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else:
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is_shadows = True
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vert = con_voxel.make_vert()
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frag = con_voxel.make_frag()
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geom = con_voxel.make_geom()
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tesc = None
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tese = None
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geom.ins = vert.outs
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frag.ins = geom.outs
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frag.write('vec3 lp = lightPos - wposition * voxelgiDimensions;')
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frag.write('vec3 l = normalize(lp);')
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frag.write('float visibility = 1.0;')
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frag.add_include('../../Shaders/compiled.glsl')
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if is_shadows:
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frag.add_include('../../Shaders/std/shadows.glsl')
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frag.add_uniform('sampler2D shadowMap', included=True)
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frag.add_uniform('samplerCube shadowMapCube', included=True)
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frag.add_uniform('int lightShadow', '_lampCastShadow')
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frag.add_uniform('vec2 lightPlane', '_lampPlane')
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frag.add_uniform('float shadowsBias', '_lampShadowsBias')
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frag.write('if (lightShadow == 1 && lampPos.w > 0.0) {')
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frag.write(' vec3 lpos = lampPos.xyz / lampPos.w;')
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frag.write(' if (texture(shadowMap, lpos.xy).r < lpos.z - shadowsBias) visibility = 0.0;')
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frag.write('}')
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frag.write('else if (lightShadow == 2) visibility = float(texture(shadowMapCube, -l).r + shadowsBias > lpToDepth(lp, lightPlane));')
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else:
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frag.write('int lightShadow = 0;')
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frag.add_include('../../Shaders/std/math.glsl')
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frag.add_include('../../Shaders/std/imageatomic.glsl')
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frag.write_header('#extension GL_ARB_shader_image_load_store : enable')
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# if bpy.data.cameras[0].rp_voxelgi_hdr:
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# frag.add_uniform('layout(RGBA16) image3D voxels')
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# else:
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# frag.add_uniform('layout(RGBA8) image3D voxels')
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frag.add_uniform('layout(r32ui) uimage3D voxels')
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frag.add_uniform('vec3 lightPos', '_lampPosition')
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frag.add_uniform('vec3 lightColor', '_lampColorVoxel')
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frag.write('if (!isInsideCube(wposition)) return;')
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frag.write('vec3 basecol;')
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frag.write('float roughness;') #
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frag.write('float metallic;') #
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frag.write('float occlusion;') #
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# frag.write('float opacity;') #
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frag.write_pre = True
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frag.write('mat3 TBN;') # TODO: discard, parse basecolor only
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frag.write('vec3 n;')
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frag.write_pre = False
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frag.write('float dotNV = 0.0;')
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frag.write('float dotNL = max(dot(wnormal, l), 0.0);')
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cycles.parse(mat_state.nodes, con_voxel, vert, frag, geom, tesc, tese, parse_opacity=False, parse_displacement=False)
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if wrd.voxelgi_camera:
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vert.add_uniform('vec3 eye', '_cameraPosition')
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vert.add_uniform('mat4 W', '_worldMatrix')
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vert.add_uniform('mat3 N', '_normalMatrix')
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vert.add_out('vec3 wpositionGeom')
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vert.add_out('vec3 wnormalGeom')
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vert.add_include('../../Shaders/compiled.glsl')
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if con_voxel.is_elem('tex'):
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vert.add_out('vec2 texCoordGeom')
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vert.write('texCoordGeom = tex;')
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if wrd.voxelgi_camera:
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vert.write('const float step = voxelgiDimensions / voxelgiResolution;') # TODO: Pass as uniform
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vert.write('vec3 eyeSnap = ivec3(eye / step) * step;') # TODO: Pass as uniform
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vert.write('wpositionGeom = (vec3(W * vec4(pos, 1.0)) - eyeSnap) / voxelgiDimensions;')
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else:
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vert.write('wpositionGeom = vec3(W * vec4(pos, 1.0)) / voxelgiDimensions;')
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vert.write('wnormalGeom = normalize(N * nor);')
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vert.write('gl_Position = vec4(0.0, 0.0, 0.0, 1.0);')
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if is_shadows:
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vert.add_out('vec4 lampPosGeom')
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vert.add_uniform('mat4 LWVP', '_biasLampWorldViewProjectionMatrix')
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vert.write('lampPosGeom = LWVP * vec4(pos, 1.0);')
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geom.add_out('vec3 wposition')
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geom.add_out('vec3 wnormal')
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if is_shadows:
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geom.add_out('vec4 lampPos')
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if con_voxel.is_elem('tex'):
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geom.add_out('vec2 texCoord')
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geom.write('const vec3 p1 = wpositionGeom[1] - wpositionGeom[0];')
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geom.write('const vec3 p2 = wpositionGeom[2] - wpositionGeom[0];')
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geom.write('const vec3 p = abs(cross(p1, p2));')
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geom.write('for (uint i = 0; i < 3; ++i) {')
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geom.write(' wposition = wpositionGeom[i];')
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geom.write(' wnormal = wnormalGeom[i];')
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if is_shadows:
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geom.write(' lampPos = lampPosGeom[i];')
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if con_voxel.is_elem('tex'):
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geom.write(' texCoord = texCoordGeom[i];')
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geom.write(' if (p.z > p.x && p.z > p.y) {')
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geom.write(' gl_Position = vec4(wposition.x, wposition.y, 0.0, 1.0);')
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geom.write(' }')
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geom.write(' else if (p.x > p.y && p.x > p.z) {')
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geom.write(' gl_Position = vec4(wposition.y, wposition.z, 0.0, 1.0);')
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geom.write(' }')
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geom.write(' else {')
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geom.write(' gl_Position = vec4(wposition.x, wposition.z, 0.0, 1.0);')
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geom.write(' }')
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geom.write(' EmitVertex();')
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geom.write('}')
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geom.write('EndPrimitive();')
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if cycles.emission_found:
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frag.write('vec3 color = basecol;')
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else:
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frag.write('vec3 color = basecol * visibility * lightColor * dotNL * attenuate(distance(wposition * voxelgiDimensions, lightPos));')
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frag.write('vec3 voxel = wposition * 0.5 + vec3(0.5);')
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if wrd.lighting_model == 'Cycles':
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frag.write('color = min(color * 0.9, vec3(0.9)) + min(color / 200.0, 0.1);') # Higher range to allow emission
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# if bpy.data.cameras[0].rp_voxelgi_hdr:
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# frag.write('imageStore(voxels, ivec3(voxelgiResolution * voxel), vec4(color, 1.0));')
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# else:
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frag.write('color = clamp(color, vec3(0.0), vec3(1.0));')
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# frag.write('uint val = convVec4ToRGBA8(vec4(color, 1.0) * 255);')
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# frag.write('imageAtomicMax(voxels, ivec3(voxelgiResolution * voxel), val);')
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# frag.write('imageStore(voxels, ivec3(voxelgiResolution * voxel), vec4(color, 1.0));')
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# frag.write('imageAtomicRGBA8Avg(voxels, ivec3(voxelgiResolution * voxel), vec4(color, 1.0));')
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frag.write('ivec3 coords = ivec3(voxelgiResolution * voxel);')
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frag.write('vec4 val = vec4(color, 1.0);')
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frag.write('val *= 255.0;')
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frag.write('uint newVal = encUnsignedNibble(convVec4ToRGBA8(val), 1);')
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frag.write('uint prevStoredVal = 0;')
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frag.write('uint currStoredVal;')
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# frag.write('int counter = 0;')
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# frag.write('while ((currStoredVal = imageAtomicCompSwap(voxels, coords, prevStoredVal, newVal)) != prevStoredVal && counter < 16) {')
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frag.write('while ((currStoredVal = imageAtomicCompSwap(voxels, coords, prevStoredVal, newVal)) != prevStoredVal) {')
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frag.write(' vec4 rval = convRGBA8ToVec4(currStoredVal & 0xFEFEFEFE);')
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frag.write(' uint n = decUnsignedNibble(currStoredVal);')
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frag.write(' rval = rval * n + val;')
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frag.write(' rval /= ++n;')
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frag.write(' rval = round(rval / 2) * 2;')
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frag.write(' newVal = encUnsignedNibble(convVec4ToRGBA8(rval), n);')
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frag.write(' prevStoredVal = currStoredVal;')
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# frag.write(' counter++;')
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frag.write('}')
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# frag.write('val.rgb *= 255.0f;')
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# frag.write('uint newVal = convVec4ToRGBA8(val);')
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# frag.write('uint prevStoredVal = 0;')
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# frag.write('uint curStoredVal;')
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# frag.write('while ((curStoredVal = imageAtomicCompSwap(voxels, coords, prevStoredVal, newVal)) != prevStoredVal) {')
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# frag.write(' prevStoredVal = curStoredVal;')
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# frag.write(' vec4 rval = convRGBA8ToVec4(curStoredVal);')
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# frag.write(' rval.xyz = (rval.xyz * rval.w);')
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# frag.write(' vec4 curValF = rval + val;')
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# frag.write(' curValF.xyz /= (curValF.w);')
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# frag.write(' newVal = convVec4ToRGBA8(curValF);')
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# frag.write('}')
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return con_voxel
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