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[require]
GLSL >= 3.30
[fragment shader]
#version 330
#define GLES_OVER_GL
#define LINEAR_TO_SRGB
precision highp float;
precision highp int;
#define M_PI 3.14159265359
#if !defined(USE_GLES_OVER_GL)
precision mediump float;
#endif
#if defined(USE_CUBEMAP) || defined(USE_PANORAMA)
in vec3 cube_interp;
#else
in vec2 uv_interp;
#endif
#ifdef USE_ASYM_PANO
uniform highp mat4 pano_transform;
uniform highp vec4 asym_proj;
#endif
// These definitions are here because the shader-wrapper builder does
// not understand `#elif defined()`
#ifdef USE_TEXTURE3D
#endif
#ifdef USE_TEXTURE2DARRAY
#endif
#ifdef YCBCR_TO_SRGB
#endif
#ifdef USE_CUBEMAP
uniform samplerCube source_cube; //texunit:0
#elif defined(USE_TEXTURE3D)
uniform sampler3D source_3d; //texunit:0
#elif defined(USE_TEXTURE2DARRAY)
uniform sampler2DArray source_2d_array; //texunit:0
#else
uniform sampler2D source; //texunit:0
#endif
#ifdef SEP_CBCR_TEXTURE
uniform sampler2D CbCr; //texunit:1
#endif
/* clang-format on */
#ifdef USE_LOD
uniform float mip_level;
#endif
#if defined(USE_TEXTURE3D) || defined(USE_TEXTURE2DARRAY)
uniform float layer;
#endif
#ifdef USE_MULTIPLIER
uniform float multiplier;
#endif
#if defined(USE_PANORAMA) || defined(USE_ASYM_PANO)
uniform highp mat4 sky_transform;
vec4 texturePanorama(vec3 normal, sampler2D pano) {
vec2 st = vec2(
atan(normal.x, normal.z),
acos(normal.y));
if (st.x < 0.0)
st.x += M_PI * 2.0;
st /= vec2(M_PI * 2.0, M_PI);
return textureLod(pano, st, 0.0);
}
#endif
uniform vec2 pixel_size;
in vec2 uv2_interp;
#ifdef USE_BCS
uniform vec3 bcs;
#endif
#ifdef USE_COLOR_CORRECTION
uniform sampler2D color_correction; //texunit:1
#endif
layout(location = 0) out vec4 frag_color;
void main() {
//vec4 color = color_interp;
#ifdef USE_PANORAMA
vec3 cube_normal = normalize(cube_interp);
cube_normal.z = -cube_normal.z;
cube_normal = mat3(sky_transform) * cube_normal;
cube_normal.z = -cube_normal.z;
vec4 color = texturePanorama(cube_normal, source);
#elif defined(USE_ASYM_PANO)
// When an asymmetrical projection matrix is used (applicable for stereoscopic rendering i.e. VR) we need to do this calculation per fragment to get a perspective correct result.
// Asymmetrical projection means the center of projection is no longer in the center of the screen but shifted.
// The Matrix[2][0] (= asym_proj.x) and Matrix[2][1] (= asym_proj.z) values are what provide the right shift in the image.
vec3 cube_normal;
cube_normal.z = -1.0;
cube_normal.x = (cube_normal.z * (-uv_interp.x - asym_proj.x)) / asym_proj.y;
cube_normal.y = (cube_normal.z * (-uv_interp.y - asym_proj.z)) / asym_proj.a;
cube_normal = mat3(sky_transform) * mat3(pano_transform) * cube_normal;
cube_normal.z = -cube_normal.z;
vec4 color = texturePanorama(normalize(cube_normal.xyz), source);
#elif defined(USE_CUBEMAP)
vec4 color = texture(source_cube, normalize(cube_interp));
#elif defined(USE_TEXTURE3D)
vec4 color = textureLod(source_3d, vec3(uv_interp, layer), 0.0);
#elif defined(USE_TEXTURE2DARRAY)
vec4 color = textureLod(source_2d_array, vec3(uv_interp, layer), 0.0);
#elif defined(SEP_CBCR_TEXTURE)
vec4 color;
color.r = textureLod(source, uv_interp, 0.0).r;
color.gb = textureLod(CbCr, uv_interp, 0.0).rg - vec2(0.5, 0.5);
color.a = 1.0;
#else
#ifdef USE_LOD
vec4 color = textureLod(source, uv_interp, mip_level);
#else
vec4 color = textureLod(source, uv_interp, 0.0);
#endif
#endif
#ifdef LINEAR_TO_SRGB
// regular Linear -> SRGB conversion
vec3 a = vec3(0.055);
color.rgb = mix((vec3(1.0) + a) * pow(color.rgb, vec3(1.0 / 2.4)) - a, 12.92 * color.rgb, lessThan(color.rgb, vec3(0.0031308)));
#elif defined(YCBCR_TO_SRGB)
// YCbCr -> SRGB conversion
// Using BT.709 which is the standard for HDTV
color.rgb = mat3(
vec3(1.00000, 1.00000, 1.00000),
vec3(0.00000, -0.18732, 1.85560),
vec3(1.57481, -0.46813, 0.00000)) *
color.rgb;
#endif
#ifdef SRGB_TO_LINEAR
color.rgb = mix(pow((color.rgb + vec3(0.055)) * (1.0 / (1.0 + 0.055)), vec3(2.4)), color.rgb * (1.0 / 12.92), lessThan(color.rgb, vec3(0.04045)));
#endif
#ifdef DEBUG_GRADIENT
color.rg = uv_interp;
color.b = 0.0;
#endif
#ifdef DISABLE_ALPHA
color.a = 1.0;
#endif
#ifdef GAUSSIAN_HORIZONTAL
color *= 0.38774;
color += texture(source, uv_interp + vec2(1.0, 0.0) * pixel_size) * 0.24477;
color += texture(source, uv_interp + vec2(2.0, 0.0) * pixel_size) * 0.06136;
color += texture(source, uv_interp + vec2(-1.0, 0.0) * pixel_size) * 0.24477;
color += texture(source, uv_interp + vec2(-2.0, 0.0) * pixel_size) * 0.06136;
#endif
#ifdef GAUSSIAN_VERTICAL
color *= 0.38774;
color += texture(source, uv_interp + vec2(0.0, 1.0) * pixel_size) * 0.24477;
color += texture(source, uv_interp + vec2(0.0, 2.0) * pixel_size) * 0.06136;
color += texture(source, uv_interp + vec2(0.0, -1.0) * pixel_size) * 0.24477;
color += texture(source, uv_interp + vec2(0.0, -2.0) * pixel_size) * 0.06136;
#endif
#ifdef USE_BCS
color.rgb = mix(vec3(0.0), color.rgb, bcs.x);
color.rgb = mix(vec3(0.5), color.rgb, bcs.y);
color.rgb = mix(vec3(dot(vec3(1.0), color.rgb) * 0.33333), color.rgb, bcs.z);
#endif
#ifdef USE_COLOR_CORRECTION
color.r = texture(color_correction, vec2(color.r, 0.0)).r;
color.g = texture(color_correction, vec2(color.g, 0.0)).g;
color.b = texture(color_correction, vec2(color.b, 0.0)).b;
#endif
#ifdef USE_MULTIPLIER
color.rgb *= multiplier;
#endif
frag_color = color;
}
[vertex shader]
#version 330
#define GLES_OVER_GL
#define LINEAR_TO_SRGB
precision highp float;
precision highp int;
layout(location = 0) in highp vec4 vertex_attrib;
/* clang-format on */
#if defined(USE_CUBEMAP) || defined(USE_PANORAMA)
layout(location = 4) in vec3 cube_in;
#else
layout(location = 4) in vec2 uv_in;
#endif
layout(location = 5) in vec2 uv2_in;
#if defined(USE_CUBEMAP) || defined(USE_PANORAMA)
out vec3 cube_interp;
#else
out vec2 uv_interp;
#endif
out vec2 uv2_interp;
// These definitions are here because the shader-wrapper builder does
// not understand `#elif defined()`
#ifdef USE_DISPLAY_TRANSFORM
#endif
#ifdef USE_COPY_SECTION
uniform vec4 copy_section;
#elif defined(USE_DISPLAY_TRANSFORM)
uniform highp mat4 display_transform;
#endif
void main() {
#if defined(USE_CUBEMAP) || defined(USE_PANORAMA)
cube_interp = cube_in;
#elif defined(USE_ASYM_PANO)
uv_interp = vertex_attrib.xy;
#else
uv_interp = uv_in;
#ifdef V_FLIP
uv_interp.y = 1.0 - uv_interp.y;
#endif
#endif
uv2_interp = uv2_in;
gl_Position = vertex_attrib;
#ifdef USE_COPY_SECTION
uv_interp = copy_section.xy + uv_interp * copy_section.zw;
gl_Position.xy = (copy_section.xy + (gl_Position.xy * 0.5 + 0.5) * copy_section.zw) * 2.0 - 1.0;
#elif defined(USE_DISPLAY_TRANSFORM)
uv_interp = (display_transform * vec4(uv_in, 1.0, 1.0)).xy;
#endif
}
/* clang-format off */
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