Variable particleVertShader
particleVertShader: "\n// Per-vertex attributes\nattribute vec3 position;\nattribute vec2 uv;\n\n// Per-instance attributes\nattribute vec3 offset;\nattribute vec4 color;\nattribute vec3 size;\nattribute float rotation;\nattribute float uvTile;\n\n// Uniforms\nuniform mat4 world;\nuniform mat4 view;\nuniform mat4 projection;\nuniform mat4 worldViewProjection;\n\n#ifdef UV_TILE\nuniform float tileCountX;\nuniform float tileCountY;\n#endif\n\n// Varyings\nvarying vec2 vUV;\nvarying vec4 vColor;\n#ifdef TILE_BLEND\nvarying vec2 vUV2;\nvarying float vTileBlend;\n#endif\n#ifdef SOFT_PARTICLES\nvarying vec4 projPosition;\nvarying float linearDepth;\n#endif\n\nvoid main() {\n float c = cos(rotation);\n float s = sin(rotation);\n\n vec2 alignedPosition = position.xy * size.xy;\n vec2 rotatedPosition;\n rotatedPosition.x = c * alignedPosition.x - s * alignedPosition.y;\n rotatedPosition.y = s * alignedPosition.x + c * alignedPosition.y;\n\n#ifdef HORIZONTAL\n vec4 mvPosition = world * vec4(offset, 1.0);\n mvPosition.x += rotatedPosition.x;\n mvPosition.z -= rotatedPosition.y;\n mvPosition = view * mvPosition;\n#elif defined(VERTICAL)\n vec4 mvPosition = world * vec4(offset, 1.0);\n mvPosition.y += rotatedPosition.y;\n mvPosition = view * mvPosition;\n mvPosition.x += rotatedPosition.x;\n#else\n vec4 mvPosition = view * world * vec4(offset, 1.0);\n mvPosition.xy += rotatedPosition;\n#endif\n\n gl_Position = projection * mvPosition;\n#ifdef SOFT_PARTICLES\n projPosition = gl_Position;\n linearDepth = -mvPosition.z;\n#endif\n\n #ifdef UV_TILE\n vec2 tc = vec2(tileCountX, tileCountY);\n float baseTile = floor(uvTile);\n float tileU = mod(baseTile, tc.x) / tc.x;\n float tileV = 1.0 - floor(baseTile / tc.x) / tc.y - 1.0 / tc.y;\n vUV = uv / tc + vec2(tileU, tileV);\n #ifdef TILE_BLEND\n float nextTile = ceil(uvTile);\n float nextU = mod(nextTile, tc.x) / tc.x;\n float nextV = 1.0 - floor(nextTile / tc.x) / tc.y - 1.0 / tc.y;\n vUV2 = uv / tc + vec2(nextU, nextV);\n vTileBlend = fract(uvTile);\n #endif\n #else\n vUV = uv;\n #endif\n\n vColor = color;\n}\n"