diff options
Diffstat (limited to 'drivers/gles3/shaders')
| -rw-r--r-- | drivers/gles3/shaders/SCsub | 1 | ||||
| -rw-r--r-- | drivers/gles3/shaders/canvas.glsl | 55 | ||||
| -rw-r--r-- | drivers/gles3/shaders/canvas_shadow.glsl | 4 | ||||
| -rw-r--r-- | drivers/gles3/shaders/copy.glsl | 73 | ||||
| -rw-r--r-- | drivers/gles3/shaders/cubemap_filter.glsl | 2 | ||||
| -rw-r--r-- | drivers/gles3/shaders/effect_blur.glsl | 8 | ||||
| -rw-r--r-- | drivers/gles3/shaders/lens_distorted.glsl | 64 | ||||
| -rw-r--r-- | drivers/gles3/shaders/scene.glsl | 464 | ||||
| -rw-r--r-- | drivers/gles3/shaders/screen_space_reflection.glsl | 2 | ||||
| -rw-r--r-- | drivers/gles3/shaders/ssao.glsl | 6 | ||||
| -rw-r--r-- | drivers/gles3/shaders/tonemap.glsl | 44 |
11 files changed, 480 insertions, 243 deletions
diff --git a/drivers/gles3/shaders/SCsub b/drivers/gles3/shaders/SCsub index f1811fa7b5..27fd1514e7 100644 --- a/drivers/gles3/shaders/SCsub +++ b/drivers/gles3/shaders/SCsub @@ -20,3 +20,4 @@ if 'GLES3_GLSL' in env['BUILDERS']: env.GLES3_GLSL('exposure.glsl'); env.GLES3_GLSL('tonemap.glsl'); env.GLES3_GLSL('particles.glsl'); + env.GLES3_GLSL('lens_distorted.glsl'); diff --git a/drivers/gles3/shaders/canvas.glsl b/drivers/gles3/shaders/canvas.glsl index 5203f53fa2..e83f53d648 100644 --- a/drivers/gles3/shaders/canvas.glsl +++ b/drivers/gles3/shaders/canvas.glsl @@ -92,11 +92,6 @@ const bool at_light_pass = true; const bool at_light_pass = false; #endif -#ifdef USE_PARTICLES -uniform int h_frames; -uniform int v_frames; -#endif - #if defined(USE_MATERIAL) /* clang-format off */ @@ -122,7 +117,12 @@ void main() { #ifdef USE_INSTANCING mat4 extra_matrix_instance = extra_matrix * transpose(mat4(instance_xform0, instance_xform1, instance_xform2, vec4(0.0, 0.0, 0.0, 1.0))); color *= instance_color; + +#ifdef USE_INSTANCE_CUSTOM vec4 instance_custom = instance_custom_data; +#else + vec4 instance_custom = vec4(0.0); +#endif #else mat4 extra_matrix_instance = extra_matrix; @@ -146,19 +146,12 @@ void main() { #ifdef USE_PARTICLES //scale by texture size outvec.xy /= color_texpixel_size; - - //compute h and v frames and adjust UV interp for animation - int total_frames = h_frames * v_frames; - int frame = min(int(float(total_frames) * instance_custom.z), total_frames - 1); - float frame_w = 1.0 / float(h_frames); - float frame_h = 1.0 / float(v_frames); - uv_interp.x = uv_interp.x * frame_w + frame_w * float(frame % h_frames); - uv_interp.y = uv_interp.y * frame_h + frame_h * float(frame / h_frames); - #endif #define extra_matrix extra_matrix_instance + //for compatibility with the fragment shader we need to use uv here + vec2 uv = uv_interp; { /* clang-format off */ @@ -167,6 +160,8 @@ VERTEX_SHADER_CODE /* clang-format on */ } + uv_interp = uv; + #ifdef USE_NINEPATCH pixel_size_interp = abs(dst_rect.zw) * vertex; @@ -182,8 +177,10 @@ VERTEX_SHADER_CODE color_interp = color; #ifdef USE_PIXEL_SNAP - outvec.xy = floor(outvec + 0.5).xy; + // precision issue on some hardware creates artifacts within texture + // offset uv by a small amount to avoid + uv_interp += 1e-5; #endif #ifdef USE_SKELETON @@ -348,6 +345,7 @@ void light_compute( inout vec4 light_color, vec2 light_uv, inout vec4 shadow_color, + inout vec2 shadow_vec, vec3 normal, vec2 uv, #if defined(SCREEN_UV_USED) @@ -492,6 +490,7 @@ void main() { #if defined(NORMALMAP_USED) vec3 normal_map = vec3(0.0, 0.0, 1.0); + normal_used = true; #endif /* clang-format off */ @@ -505,7 +504,7 @@ FRAGMENT_SHADER_CODE #endif } #ifdef DEBUG_ENCODED_32 - highp float enc32 = dot(color, highp vec4(1.0 / (256.0 * 256.0 * 256.0), 1.0 / (256.0 * 256.0), 1.0 / 256.0, 1)); + highp float enc32 = dot(color, highp vec4(1.0 / (256.0 * 256.0 * 256.0), 1.0 / (256.0 * 256.0), 1.0 / 256.0, 1.0)); color = vec4(vec3(enc32), 1.0); #endif @@ -514,6 +513,7 @@ FRAGMENT_SHADER_CODE #ifdef USE_LIGHTING vec2 light_vec = transformed_light_uv; + vec2 shadow_vec = transformed_light_uv; if (normal_used) { normal.xy = mat2(local_rot.xy, local_rot.zw) * normal.xy; @@ -541,6 +541,7 @@ FRAGMENT_SHADER_CODE real_light_color, light_uv, real_light_shadow_color, + shadow_vec, normal, uv, #if defined(SCREEN_UV_USED) @@ -559,8 +560,16 @@ FRAGMENT_SHADER_CODE color *= light; #ifdef USE_SHADOWS - light_vec = light_uv_interp.zw; //for shadows - float angle_to_light = -atan(light_vec.x, light_vec.y); +#ifdef SHADOW_VEC_USED + mat3 inverse_light_matrix = mat3(light_matrix); + inverse_light_matrix[0] = normalize(inverse_light_matrix[0]); + inverse_light_matrix[1] = normalize(inverse_light_matrix[1]); + inverse_light_matrix[2] = normalize(inverse_light_matrix[2]); + shadow_vec = (mat3(inverse_light_matrix) * vec3(shadow_vec, 0.0)).xy; +#else + shadow_vec = light_uv_interp.zw; +#endif + float angle_to_light = -atan(shadow_vec.x, shadow_vec.y); float PI = 3.14159265358979323846264; /*int i = int(mod(floor((angle_to_light+7.0*PI/6.0)/(4.0*PI/6.0))+1.0, 3.0)); // +1 pq os indices estao em ordem 2,0,1 nos arrays float ang*/ @@ -571,18 +580,18 @@ FRAGMENT_SHADER_CODE vec2 point; float sh; if (abs_angle < 45.0 * PI / 180.0) { - point = light_vec; + point = shadow_vec; sh = 0.0 + (1.0 / 8.0); } else if (abs_angle > 135.0 * PI / 180.0) { - point = -light_vec; + point = -shadow_vec; sh = 0.5 + (1.0 / 8.0); } else if (angle_to_light > 0.0) { - point = vec2(light_vec.y, -light_vec.x); + point = vec2(shadow_vec.y, -shadow_vec.x); sh = 0.25 + (1.0 / 8.0); } else { - point = vec2(-light_vec.y, light_vec.x); + point = vec2(-shadow_vec.y, shadow_vec.x); sh = 0.75 + (1.0 / 8.0); } @@ -596,7 +605,7 @@ FRAGMENT_SHADER_CODE #ifdef USE_RGBA_SHADOWS -#define SHADOW_DEPTH(m_tex, m_uv) dot(texture((m_tex), (m_uv)), vec4(1.0 / (256.0 * 256.0 * 256.0), 1.0 / (256.0 * 256.0), 1.0 / 256.0, 1)) +#define SHADOW_DEPTH(m_tex, m_uv) dot(texture((m_tex), (m_uv)), vec4(1.0 / (255.0 * 255.0 * 255.0), 1.0 / (255.0 * 255.0), 1.0 / 255.0, 1.0)) #else diff --git a/drivers/gles3/shaders/canvas_shadow.glsl b/drivers/gles3/shaders/canvas_shadow.glsl index 68d0713385..4f706c5505 100644 --- a/drivers/gles3/shaders/canvas_shadow.glsl +++ b/drivers/gles3/shaders/canvas_shadow.glsl @@ -35,8 +35,8 @@ void main() { #ifdef USE_RGBA_SHADOWS - highp vec4 comp = fract(depth * vec4(256.0 * 256.0 * 256.0, 256.0 * 256.0, 256.0, 1.0)); - comp -= comp.xxyz * vec4(0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0); + highp vec4 comp = fract(depth * vec4(255.0 * 255.0 * 255.0, 255.0 * 255.0, 255.0, 1.0)); + comp -= comp.xxyz * vec4(0.0, 1.0 / 255.0, 1.0 / 255.0, 1.0 / 255.0); distance_buf = comp; #else diff --git a/drivers/gles3/shaders/copy.glsl b/drivers/gles3/shaders/copy.glsl index a5637537d2..1952e201aa 100644 --- a/drivers/gles3/shaders/copy.glsl +++ b/drivers/gles3/shaders/copy.glsl @@ -18,10 +18,19 @@ out vec2 uv_interp; 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() { @@ -44,6 +53,9 @@ void main() { 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 } @@ -61,24 +73,47 @@ in vec3 cube_interp; #else in vec2 uv_interp; #endif -/* clang-format on */ #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 */ + +#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) { @@ -96,7 +131,6 @@ vec4 texturePanorama(vec3 normal, sampler2D pano) { #endif -uniform float stuff; uniform vec2 pixel_size; in vec2 uv2_interp; @@ -121,19 +155,24 @@ void main() { #ifdef USE_PANORAMA - vec4 color = texturePanorama(normalize(cube_interp), source); + 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. - // Note that we're ignoring the x-offset for IPD, with Z sufficiently in the distance it becomes neglectible, as a result we could probably just set cube_normal.z to -1. + // 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 = -1000000.0; + 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(pano_transform) * cube_normal; + cube_normal = mat3(sky_transform) * mat3(pano_transform) * cube_normal; cube_normal.z = -cube_normal.z; vec4 color = texturePanorama(normalize(cube_normal.xyz), source); @@ -141,14 +180,34 @@ void main() { #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 vec4 color = textureLod(source, uv_interp, 0.0); #endif #ifdef LINEAR_TO_SRGB - //regular Linear -> SRGB conversion + // 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 diff --git a/drivers/gles3/shaders/cubemap_filter.glsl b/drivers/gles3/shaders/cubemap_filter.glsl index f65f798ff0..619e29b130 100644 --- a/drivers/gles3/shaders/cubemap_filter.glsl +++ b/drivers/gles3/shaders/cubemap_filter.glsl @@ -163,7 +163,7 @@ vec2 Hammersley(uint i, uint N) { #else -#define SAMPLE_COUNT 512u +#define SAMPLE_COUNT 1024u #endif diff --git a/drivers/gles3/shaders/effect_blur.glsl b/drivers/gles3/shaders/effect_blur.glsl index b67d06bc10..ff5a9f326f 100644 --- a/drivers/gles3/shaders/effect_blur.glsl +++ b/drivers/gles3/shaders/effect_blur.glsl @@ -94,6 +94,7 @@ uniform sampler2D source_dof_original; //texunit:2 uniform float exposure; uniform float white; +uniform highp float luminance_cap; #ifdef GLOW_USE_AUTO_EXPOSURE @@ -116,12 +117,13 @@ void main() { #ifdef GAUSSIAN_HORIZONTAL vec2 pix_size = pixel_size; pix_size *= 0.5; //reading from larger buffer, so use more samples + // sigma 2 vec4 color = textureLod(source_color, uv_interp + vec2(0.0, 0.0) * pix_size, lod) * 0.214607; color += textureLod(source_color, uv_interp + vec2(1.0, 0.0) * pix_size, lod) * 0.189879; - color += textureLod(source_color, uv_interp + vec2(2.0, 0.0) * pix_size, lod) * 0.157305; + color += textureLod(source_color, uv_interp + vec2(2.0, 0.0) * pix_size, lod) * 0.131514; color += textureLod(source_color, uv_interp + vec2(3.0, 0.0) * pix_size, lod) * 0.071303; color += textureLod(source_color, uv_interp + vec2(-1.0, 0.0) * pix_size, lod) * 0.189879; - color += textureLod(source_color, uv_interp + vec2(-2.0, 0.0) * pix_size, lod) * 0.157305; + color += textureLod(source_color, uv_interp + vec2(-2.0, 0.0) * pix_size, lod) * 0.131514; color += textureLod(source_color, uv_interp + vec2(-3.0, 0.0) * pix_size, lod) * 0.071303; frag_color = color; #endif @@ -271,7 +273,7 @@ void main() { float luminance = max(frag_color.r, max(frag_color.g, frag_color.b)); float feedback = max(smoothstep(glow_hdr_threshold, glow_hdr_threshold + glow_hdr_scale, luminance), glow_bloom); - frag_color *= feedback; + frag_color = min(frag_color * feedback, vec4(luminance_cap)); #endif diff --git a/drivers/gles3/shaders/lens_distorted.glsl b/drivers/gles3/shaders/lens_distorted.glsl new file mode 100644 index 0000000000..7b9d0b347f --- /dev/null +++ b/drivers/gles3/shaders/lens_distorted.glsl @@ -0,0 +1,64 @@ +/* clang-format off */ +[vertex] + +layout(location = 0) in highp vec4 vertex_attrib; +/* clang-format on */ + +uniform vec2 offset; +uniform vec2 scale; + +out vec2 uv_interp; + +void main() { + + uv_interp = vertex_attrib.xy * 2.0 - 1.0; + + vec2 v = vertex_attrib.xy * scale + offset; + gl_Position = vec4(v, 0.0, 1.0); +} + +/* clang-format off */ +[fragment] + +uniform sampler2D source; //texunit:0 +/* clang-format on */ + +uniform vec2 eye_center; +uniform float k1; +uniform float k2; +uniform float upscale; +uniform float aspect_ratio; + +in vec2 uv_interp; + +layout(location = 0) out vec4 frag_color; + +void main() { + vec2 coords = uv_interp; + vec2 offset = coords - eye_center; + + // take aspect ratio into account + offset.y /= aspect_ratio; + + // distort + vec2 offset_sq = offset * offset; + float radius_sq = offset_sq.x + offset_sq.y; + float radius_s4 = radius_sq * radius_sq; + float distortion_scale = 1.0 + (k1 * radius_sq) + (k2 * radius_s4); + offset *= distortion_scale; + + // reapply aspect ratio + offset.y *= aspect_ratio; + + // add our eye center back in + coords = offset + eye_center; + coords /= upscale; + + // and check our color + if (coords.x < -1.0 || coords.y < -1.0 || coords.x > 1.0 || coords.y > 1.0) { + frag_color = vec4(0.0, 0.0, 0.0, 1.0); + } else { + coords = (coords + vec2(1.0)) / vec2(2.0); + frag_color = textureLod(source, coords, 0.0); + } +} diff --git a/drivers/gles3/shaders/scene.glsl b/drivers/gles3/shaders/scene.glsl index 7da20dfa00..403de25dd0 100644 --- a/drivers/gles3/shaders/scene.glsl +++ b/drivers/gles3/shaders/scene.glsl @@ -42,11 +42,9 @@ layout(location = 4) in vec2 uv_attrib; layout(location = 5) in vec2 uv2_attrib; #endif -uniform float normal_mult; - #ifdef USE_SKELETON layout(location = 6) in uvec4 bone_indices; // attrib:6 -layout(location = 7) in vec4 bone_weights; // attrib:7 +layout(location = 7) in highp vec4 bone_weights; // attrib:7 #endif #ifdef USE_INSTANCING @@ -98,6 +96,8 @@ layout(std140) uniform SceneData { // ubo:0 bool fog_depth_enabled; highp float fog_depth_begin; + highp float fog_depth_end; + mediump float fog_density; highp float fog_depth_curve; bool fog_transmit_enabled; highp float fog_transmit_curve; @@ -167,15 +167,61 @@ out vec4 specular_light_interp; void light_compute(vec3 N, vec3 L, vec3 V, vec3 light_color, float roughness, inout vec3 diffuse, inout vec3 specular) { - float dotNL = max(dot(N, L), 0.0); - diffuse += dotNL * light_color / M_PI; + float NdotL = dot(N, L); + float cNdotL = max(NdotL, 0.0); // clamped NdotL + float NdotV = dot(N, V); + float cNdotV = max(NdotV, 0.0); + +#if defined(DIFFUSE_OREN_NAYAR) + vec3 diffuse_brdf_NL; +#else + float diffuse_brdf_NL; // BRDF times N.L for calculating diffuse radiance +#endif + +#if defined(DIFFUSE_LAMBERT_WRAP) + // energy conserving lambert wrap shader + diffuse_brdf_NL = max(0.0, (NdotL + roughness) / ((1.0 + roughness) * (1.0 + roughness))); + +#elif defined(DIFFUSE_OREN_NAYAR) + + { + // see http://mimosa-pudica.net/improved-oren-nayar.html + float LdotV = dot(L, V); + + float s = LdotV - NdotL * NdotV; + float t = mix(1.0, max(NdotL, NdotV), step(0.0, s)); + + float sigma2 = roughness * roughness; // TODO: this needs checking + vec3 A = 1.0 + sigma2 * (-0.5 / (sigma2 + 0.33) + 0.17 * diffuse_color / (sigma2 + 0.13)); + float B = 0.45 * sigma2 / (sigma2 + 0.09); + + diffuse_brdf_NL = cNdotL * (A + vec3(B) * s / t) * (1.0 / M_PI); + } +#else + // lambert by default for everything else + diffuse_brdf_NL = cNdotL * (1.0 / M_PI); +#endif + + diffuse += light_color * diffuse_brdf_NL; if (roughness > 0.0) { + // D + float specular_brdf_NL = 0.0; + +#if !defined(SPECULAR_DISABLED) + //normalized blinn always unless disabled vec3 H = normalize(V + L); - float dotNH = max(dot(N, H), 0.0); - float intensity = (roughness >= 1.0 ? 1.0 : pow(dotNH, (1.0 - roughness) * 256.0)); - specular += light_color * intensity; + float cNdotH = max(dot(N, H), 0.0); + float cVdotH = max(dot(V, H), 0.0); + float cLdotH = max(dot(L, H), 0.0); + float shininess = exp2(15.0 * (1.0 - roughness) + 1.0) * 0.25; + float blinn = pow(cNdotH, shininess); + blinn *= (shininess + 8.0) * (1.0 / (8.0 * M_PI)); + specular_brdf_NL = (blinn) / max(4.0 * cNdotV * cNdotL, 0.75); +#endif + + specular += specular_brdf_NL * light_color * (1.0 / M_PI); } } @@ -268,7 +314,7 @@ void main() { highp vec4 vertex = vertex_attrib; // vec4(vertex_attrib.xyz * data_attrib.x,1.0); - mat4 world_matrix = world_transform; + highp mat4 world_matrix = world_transform; #ifdef USE_INSTANCING @@ -278,11 +324,10 @@ void main() { } #endif - vec3 normal = normal_attrib * normal_mult; + vec3 normal = normal_attrib; #if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) vec3 tangent = tangent_attrib.xyz; - tangent *= normal_mult; float binormalf = tangent_attrib.a; #endif @@ -307,6 +352,10 @@ void main() { uv2_interp = uv2_attrib; #endif +#ifdef OVERRIDE_POSITION + highp vec4 position; +#endif + #if defined(USE_INSTANCING) && defined(ENABLE_INSTANCE_CUSTOM) vec4 instance_custom = instance_custom_data; #else @@ -346,44 +395,46 @@ void main() { ivec4 bone_indicesi = ivec4(bone_indices); // cast to signed int ivec2 tex_ofs = ivec2(bone_indicesi.x % 256, (bone_indicesi.x / 256) * 3); - highp mat3x4 m; - m = mat3x4( + highp mat4 m; + m = mat4( texelFetch(skeleton_texture, tex_ofs, 0), texelFetch(skeleton_texture, tex_ofs + ivec2(0, 1), 0), - texelFetch(skeleton_texture, tex_ofs + ivec2(0, 2), 0)) * + texelFetch(skeleton_texture, tex_ofs + ivec2(0, 2), 0), + vec4(0.0, 0.0, 0.0, 1.0)) * bone_weights.x; tex_ofs = ivec2(bone_indicesi.y % 256, (bone_indicesi.y / 256) * 3); - m += mat3x4( + m += mat4( texelFetch(skeleton_texture, tex_ofs, 0), texelFetch(skeleton_texture, tex_ofs + ivec2(0, 1), 0), - texelFetch(skeleton_texture, tex_ofs + ivec2(0, 2), 0)) * + texelFetch(skeleton_texture, tex_ofs + ivec2(0, 2), 0), + vec4(0.0, 0.0, 0.0, 1.0)) * bone_weights.y; tex_ofs = ivec2(bone_indicesi.z % 256, (bone_indicesi.z / 256) * 3); - m += mat3x4( + m += mat4( texelFetch(skeleton_texture, tex_ofs, 0), texelFetch(skeleton_texture, tex_ofs + ivec2(0, 1), 0), - texelFetch(skeleton_texture, tex_ofs + ivec2(0, 2), 0)) * + texelFetch(skeleton_texture, tex_ofs + ivec2(0, 2), 0), + vec4(0.0, 0.0, 0.0, 1.0)) * bone_weights.z; tex_ofs = ivec2(bone_indicesi.w % 256, (bone_indicesi.w / 256) * 3); - m += mat3x4( + m += mat4( texelFetch(skeleton_texture, tex_ofs, 0), texelFetch(skeleton_texture, tex_ofs + ivec2(0, 1), 0), - texelFetch(skeleton_texture, tex_ofs + ivec2(0, 2), 0)) * + texelFetch(skeleton_texture, tex_ofs + ivec2(0, 2), 0), + vec4(0.0, 0.0, 0.0, 1.0)) * bone_weights.w; - mat4 bone_matrix = transpose(mat4(m[0], m[1], m[2], vec4(0.0, 0.0, 0.0, 1.0))); - - world_matrix = bone_matrix * world_matrix; + world_matrix = world_matrix * transpose(m); } #endif - mat4 modelview = camera_inverse_matrix * world_matrix; + highp mat4 modelview = camera_inverse_matrix * world_matrix; { /* clang-format off */ @@ -462,7 +513,11 @@ VERTEX_SHADER_CODE #endif //RENDER_DEPTH +#ifdef OVERRIDE_POSITION + gl_Position = position; +#else gl_Position = projection_matrix * vec4(vertex_interp, 1.0); +#endif position_interp = gl_Position; @@ -675,6 +730,8 @@ layout(std140) uniform SceneData { bool fog_depth_enabled; highp float fog_depth_begin; + highp float fog_depth_end; + mediump float fog_density; highp float fog_depth_curve; bool fog_transmit_enabled; highp float fog_transmit_curve; @@ -920,13 +977,14 @@ float GTR1(float NdotH, float a) { return (a2 - 1.0) / (M_PI * log(a2) * t); } -vec3 metallic_to_specular_color(float metallic, float specular, vec3 albedo) { - float dielectric = (0.034 * 2.0) * specular; - // energy conservation - return mix(vec3(dielectric), albedo, metallic); // TODO: reference? +vec3 F0(float metallic, float specular, vec3 albedo) { + float dielectric = 0.16 * specular * specular; + // use albedo * metallic as colored specular reflectance at 0 angle for metallic materials; + // see https://google.github.io/filament/Filament.md.html + return mix(vec3(dielectric), albedo, vec3(metallic)); } -void light_compute(vec3 N, vec3 L, vec3 V, vec3 B, vec3 T, vec3 light_color, vec3 attenuation, vec3 diffuse_color, vec3 transmission, float specular_blob_intensity, float roughness, float metallic, float rim, float rim_tint, float clearcoat, float clearcoat_gloss, float anisotropy, inout vec3 diffuse_light, inout vec3 specular_light) { +void light_compute(vec3 N, vec3 L, vec3 V, vec3 B, vec3 T, vec3 light_color, vec3 attenuation, vec3 diffuse_color, vec3 transmission, float specular_blob_intensity, float roughness, float metallic, float specular, float rim, float rim_tint, float clearcoat, float clearcoat_gloss, float anisotropy, inout vec3 diffuse_light, inout vec3 specular_light, inout float alpha) { #if defined(USE_LIGHT_SHADER_CODE) // light is written by the light shader @@ -948,6 +1006,18 @@ LIGHT_SHADER_CODE float NdotV = dot(N, V); float cNdotV = max(NdotV, 0.0); +#if defined(DIFFUSE_BURLEY) || defined(SPECULAR_BLINN) || defined(SPECULAR_SCHLICK_GGX) || defined(LIGHT_USE_CLEARCOAT) + vec3 H = normalize(V + L); +#endif + +#if defined(SPECULAR_BLINN) || defined(SPECULAR_SCHLICK_GGX) || defined(LIGHT_USE_CLEARCOAT) + float cNdotH = max(dot(N, H), 0.0); +#endif + +#if defined(DIFFUSE_BURLEY) || defined(SPECULAR_SCHLICK_GGX) || defined(LIGHT_USE_CLEARCOAT) + float cLdotH = max(dot(L, H), 0.0); +#endif + if (metallic < 1.0) { #if defined(DIFFUSE_OREN_NAYAR) vec3 diffuse_brdf_NL; @@ -982,13 +1052,9 @@ LIGHT_SHADER_CODE #elif defined(DIFFUSE_BURLEY) { - - vec3 H = normalize(V + L); - float cLdotH = max(0.0, dot(L, H)); - - float FD90 = 0.5 + 2.0 * cLdotH * cLdotH * roughness; - float FdV = 1.0 + (FD90 - 1.0) * SchlickFresnel(cNdotV); - float FdL = 1.0 + (FD90 - 1.0) * SchlickFresnel(cNdotL); + float FD90_minus_1 = 2.0 * cLdotH * cLdotH * roughness - 0.5; + float FdV = 1.0 + FD90_minus_1 * SchlickFresnel(cNdotV); + float FdL = 1.0 + FD90_minus_1 * SchlickFresnel(cNdotL); diffuse_brdf_NL = (1.0 / M_PI) * FdV * FdL * cNdotL; /* float energyBias = mix(roughness, 0.0, 0.5); @@ -1025,13 +1091,9 @@ LIGHT_SHADER_CODE #if defined(SPECULAR_BLINN) //normalized blinn - vec3 H = normalize(V + L); - float cNdotH = max(dot(N, H), 0.0); - float cVdotH = max(dot(V, H), 0.0); - float cLdotH = max(dot(L, H), 0.0); float shininess = exp2(15.0 * (1.0 - roughness) + 1.0) * 0.25; float blinn = pow(cNdotH, shininess); - blinn *= (shininess + 8.0) / (8.0 * 3.141592654); + blinn *= (shininess + 8.0) * (1.0 / (8.0 * M_PI)); float intensity = (blinn) / max(4.0 * cNdotV * cNdotL, 0.75); specular_light += light_color * intensity * specular_blob_intensity * attenuation; @@ -1042,7 +1104,7 @@ LIGHT_SHADER_CODE float cRdotV = max(0.0, dot(R, V)); float shininess = exp2(15.0 * (1.0 - roughness) + 1.0) * 0.25; float phong = pow(cRdotV, shininess); - phong *= (shininess + 8.0) / (8.0 * 3.141592654); + phong *= (shininess + 8.0) * (1.0 / (8.0 * M_PI)); float intensity = (phong) / max(4.0 * cNdotV * cNdotL, 0.75); specular_light += light_color * intensity * specular_blob_intensity * attenuation; @@ -1062,59 +1124,51 @@ LIGHT_SHADER_CODE #elif defined(SPECULAR_SCHLICK_GGX) // shlick+ggx as default - vec3 H = normalize(V + L); - - float cNdotH = max(dot(N, H), 0.0); - float cLdotH = max(dot(L, H), 0.0); - #if defined(LIGHT_USE_ANISOTROPY) + float alpha_ggx = roughness * roughness; float aspect = sqrt(1.0 - anisotropy * 0.9); - float rx = roughness / aspect; - float ry = roughness * aspect; - float ax = rx * rx; - float ay = ry * ry; + float ax = alpha_ggx / aspect; + float ay = alpha_ggx * aspect; float XdotH = dot(T, H); float YdotH = dot(B, H); float D = D_GGX_anisotropic(cNdotH, ax, ay, XdotH, YdotH); float G = G_GGX_anisotropic_2cos(cNdotL, ax, ay, XdotH, YdotH) * G_GGX_anisotropic_2cos(cNdotV, ax, ay, XdotH, YdotH); #else - float alpha = roughness * roughness; - float D = D_GGX(cNdotH, alpha); - float G = G_GGX_2cos(cNdotL, alpha) * G_GGX_2cos(cNdotV, alpha); + float alpha_ggx = roughness * roughness; + float D = D_GGX(cNdotH, alpha_ggx); + float G = G_GGX_2cos(cNdotL, alpha_ggx) * G_GGX_2cos(cNdotV, alpha_ggx); #endif // F - //float F0 = 1.0; - //float cLdotH5 = SchlickFresnel(cLdotH); - //float F = mix(cLdotH5, 1.0, F0); + vec3 f0 = F0(metallic, specular, diffuse_color); + float cLdotH5 = SchlickFresnel(cLdotH); + vec3 F = mix(vec3(cLdotH5), vec3(1.0), f0); - float specular_brdf_NL = cNdotL * D /* F */ * G; + vec3 specular_brdf_NL = cNdotL * D * F * G; specular_light += specular_brdf_NL * light_color * specular_blob_intensity * attenuation; #endif #if defined(LIGHT_USE_CLEARCOAT) - if (clearcoat_gloss > 0.0) { -#if !defined(SPECULAR_SCHLICK_GGX) && !defined(SPECULAR_BLINN) - vec3 H = normalize(V + L); -#endif + #if !defined(SPECULAR_SCHLICK_GGX) - float cNdotH = max(dot(N, H), 0.0); - float cLdotH = max(dot(L, H), 0.0); - float cLdotH5 = SchlickFresnel(cLdotH); + float cLdotH5 = SchlickFresnel(cLdotH); #endif - float Dr = GTR1(cNdotH, mix(.1, .001, clearcoat_gloss)); - float Fr = mix(.04, 1.0, cLdotH5); - float Gr = G_GGX_2cos(cNdotL, .25) * G_GGX_2cos(cNdotV, .25); + float Dr = GTR1(cNdotH, mix(.1, .001, clearcoat_gloss)); + float Fr = mix(.04, 1.0, cLdotH5); + float Gr = G_GGX_2cos(cNdotL, .25) * G_GGX_2cos(cNdotV, .25); - float specular_brdf_NL = 0.25 * clearcoat * Gr * Fr * Dr * cNdotL; + float clearcoat_specular_brdf_NL = 0.25 * clearcoat * Gr * Fr * Dr * cNdotL; - specular_light += specular_brdf_NL * light_color * specular_blob_intensity * attenuation; - } + specular_light += clearcoat_specular_brdf_NL * light_color * specular_blob_intensity * attenuation; #endif } +#ifdef USE_SHADOW_TO_OPACITY + alpha = min(alpha, clamp(1.0 - length(attenuation), 0.0, 1.0)); +#endif + #endif //defined(USE_LIGHT_SHADER_CODE) } @@ -1136,8 +1190,9 @@ float sample_shadow(highp sampler2DShadow shadow, vec2 shadow_pixel_size, vec2 p avg += textureProj(shadow, vec4(pos + vec2(0.0, shadow_pixel_size.y * 2.0), depth, 1.0)); avg += textureProj(shadow, vec4(pos + vec2(0.0, -shadow_pixel_size.y * 2.0), depth, 1.0)); return avg * (1.0 / 13.0); +#endif -#elif defined(SHADOW_MODE_PCF_5) +#ifdef SHADOW_MODE_PCF_5 float avg = textureProj(shadow, vec4(pos, depth, 1.0)); avg += textureProj(shadow, vec4(pos + vec2(shadow_pixel_size.x, 0.0), depth, 1.0)); @@ -1146,7 +1201,9 @@ float sample_shadow(highp sampler2DShadow shadow, vec2 shadow_pixel_size, vec2 p avg += textureProj(shadow, vec4(pos + vec2(0.0, -shadow_pixel_size.y), depth, 1.0)); return avg * (1.0 / 5.0); -#else +#endif + +#if !defined(SHADOW_MODE_PCF_5) || !defined(SHADOW_MODE_PCF_13) return textureProj(shadow, vec4(pos, depth, 1.0)); @@ -1188,7 +1245,7 @@ vec3 light_transmittance(float translucency,vec3 light_vec, vec3 normal, vec3 po } #endif -void light_process_omni(int idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 binormal, vec3 tangent, vec3 albedo, vec3 transmission, float roughness, float metallic, float rim, float rim_tint, float clearcoat, float clearcoat_gloss, float anisotropy, float p_blob_intensity, inout vec3 diffuse_light, inout vec3 specular_light) { +void light_process_omni(int idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 binormal, vec3 tangent, vec3 albedo, vec3 transmission, float roughness, float metallic, float specular, float rim, float rim_tint, float clearcoat, float clearcoat_gloss, float anisotropy, float p_blob_intensity, inout vec3 diffuse_light, inout vec3 specular_light, inout float alpha) { vec3 light_rel_vec = omni_lights[idx].light_pos_inv_radius.xyz - vertex; float light_length = length(light_rel_vec); @@ -1242,10 +1299,10 @@ void light_process_omni(int idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 bi light_attenuation *= mix(omni_lights[idx].shadow_color_contact.rgb, vec3(1.0), shadow); } #endif //SHADOWS_DISABLED - light_compute(normal, normalize(light_rel_vec), eye_vec, binormal, tangent, omni_lights[idx].light_color_energy.rgb, light_attenuation, albedo, transmission, omni_lights[idx].light_params.z * p_blob_intensity, roughness, metallic, rim * omni_attenuation, rim_tint, clearcoat, clearcoat_gloss, anisotropy, diffuse_light, specular_light); + light_compute(normal, normalize(light_rel_vec), eye_vec, binormal, tangent, omni_lights[idx].light_color_energy.rgb, light_attenuation, albedo, transmission, omni_lights[idx].light_params.z * p_blob_intensity, roughness, metallic, specular, rim * omni_attenuation, rim_tint, clearcoat, clearcoat_gloss, anisotropy, diffuse_light, specular_light, alpha); } -void light_process_spot(int idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 binormal, vec3 tangent, vec3 albedo, vec3 transmission, float roughness, float metallic, float rim, float rim_tint, float clearcoat, float clearcoat_gloss, float anisotropy, float p_blob_intensity, inout vec3 diffuse_light, inout vec3 specular_light) { +void light_process_spot(int idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 binormal, vec3 tangent, vec3 albedo, vec3 transmission, float roughness, float metallic, float specular, float rim, float rim_tint, float clearcoat, float clearcoat_gloss, float anisotropy, float p_blob_intensity, inout vec3 diffuse_light, inout vec3 specular_light, inout float alpha) { vec3 light_rel_vec = spot_lights[idx].light_pos_inv_radius.xyz - vertex; float light_length = length(light_rel_vec); @@ -1277,7 +1334,7 @@ void light_process_spot(int idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 bi } #endif //SHADOWS_DISABLED - light_compute(normal, normalize(light_rel_vec), eye_vec, binormal, tangent, spot_lights[idx].light_color_energy.rgb, light_attenuation, albedo, transmission, spot_lights[idx].light_params.z * p_blob_intensity, roughness, metallic, rim * spot_attenuation, rim_tint, clearcoat, clearcoat_gloss, anisotropy, diffuse_light, specular_light); + light_compute(normal, normalize(light_rel_vec), eye_vec, binormal, tangent, spot_lights[idx].light_color_energy.rgb, light_attenuation, albedo, transmission, spot_lights[idx].light_params.z * p_blob_intensity, roughness, metallic, specular, rim * spot_attenuation, rim_tint, clearcoat, clearcoat_gloss, anisotropy, diffuse_light, specular_light, alpha); } void reflection_process(int idx, vec3 vertex, vec3 normal, vec3 binormal, vec3 tangent, float roughness, float anisotropy, vec3 ambient, vec3 skybox, inout highp vec4 reflection_accum, inout highp vec4 ambient_accum) { @@ -1337,7 +1394,7 @@ void reflection_process(int idx, vec3 vertex, vec3 normal, vec3 binormal, vec3 t reflection_accum += reflection; } -#ifndef USE_LIGHTMAP +#if !defined(USE_LIGHTMAP) && !defined(USE_LIGHTMAP_CAPTURE) if (reflections[idx].ambient.a > 0.0) { //compute ambient using skybox vec3 local_amb_vec = (reflections[idx].local_matrix * vec4(normal, 0.0)).xyz; @@ -1468,8 +1525,8 @@ void gi_probe_compute(mediump sampler3D probe, mat4 probe_xform, vec3 bounds, ve #define MAX_CONE_DIRS 6 vec3 cone_dirs[MAX_CONE_DIRS] = vec3[]( - vec3(0, 0, 1), - vec3(0.866025, 0, 0.5), + vec3(0.0, 0.0, 1.0), + vec3(0.866025, 0.0, 0.5), vec3(0.267617, 0.823639, 0.5), vec3(-0.700629, 0.509037, 0.5), vec3(-0.700629, -0.509037, 0.5), @@ -1483,10 +1540,10 @@ void gi_probe_compute(mediump sampler3D probe, mat4 probe_xform, vec3 bounds, ve #define MAX_CONE_DIRS 4 vec3 cone_dirs[MAX_CONE_DIRS] = vec3[]( - vec3(0.707107, 0, 0.707107), - vec3(0, 0.707107, 0.707107), - vec3(-0.707107, 0, 0.707107), - vec3(0, -0.707107, 0.707107)); + vec3(0.707107, 0.0, 0.707107), + vec3(0.0, 0.707107, 0.707107), + vec3(-0.707107, 0.0, 0.707107), + vec3(0.0, -0.707107, 0.707107)); float cone_weights[MAX_CONE_DIRS] = float[](0.25, 0.25, 0.25, 0.25); float cone_angle_tan = 0.98269; @@ -1507,7 +1564,7 @@ void gi_probe_compute(mediump sampler3D probe, mat4 probe_xform, vec3 bounds, ve //irradiance - vec3 irr_light = voxel_cone_trace(probe, cell_size, probe_pos, environment, blend_ambient, ref_vec, max(min_ref_tan, tan(roughness * 0.5 * M_PI)), max_distance, p_bias); + vec3 irr_light = voxel_cone_trace(probe, cell_size, probe_pos, environment, blend_ambient, ref_vec, max(min_ref_tan, tan(roughness * 0.5 * M_PI * 0.99)), max_distance, p_bias); irr_light *= multiplier; //irr_light=vec3(0.0); @@ -1522,7 +1579,7 @@ void gi_probes_compute(vec3 pos, vec3 normal, float roughness, inout vec3 out_sp vec3 ref_vec = normalize(reflect(normalize(pos), normal)); //find arbitrary tangent and bitangent, then build a matrix - vec3 v0 = abs(normal.z) < 0.999 ? vec3(0, 0, 1) : vec3(0, 1, 0); + vec3 v0 = abs(normal.z) < 0.999 ? vec3(0.0, 0.0, 1.0) : vec3(0.0, 1.0, 0.0); vec3 tangent = normalize(cross(v0, normal)); vec3 bitangent = normalize(cross(tangent, normal)); mat3 normal_mat = mat3(tangent, bitangent, normal); @@ -1568,6 +1625,7 @@ void main() { //lay out everything, whathever is unused is optimized away anyway highp vec3 vertex = vertex_interp; + vec3 view = -normalize(vertex_interp); vec3 albedo = vec3(1.0); vec3 transmission = vec3(0.0); float metallic = 0.0; @@ -1588,24 +1646,24 @@ void main() { float alpha = 1.0; -#if defined(DO_SIDE_CHECK) - float side = gl_FrontFacing ? 1.0 : -1.0; -#else - float side = 1.0; -#endif - #if defined(ALPHA_SCISSOR_USED) float alpha_scissor = 0.5; #endif #if defined(ENABLE_TANGENT_INTERP) || defined(ENABLE_NORMALMAP) || defined(LIGHT_USE_ANISOTROPY) - vec3 binormal = normalize(binormal_interp) * side; - vec3 tangent = normalize(tangent_interp) * side; + vec3 binormal = normalize(binormal_interp); + vec3 tangent = normalize(tangent_interp); #else vec3 binormal = vec3(0.0); vec3 tangent = vec3(0.0); #endif - vec3 normal = normalize(normal_interp) * side; + vec3 normal = normalize(normal_interp); + +#if defined(DO_SIDE_CHECK) + if (!gl_FrontFacing) { + normal = -normal; + } +#endif #if defined(ENABLE_UV_INTERP) vec2 uv = uv_interp; @@ -1642,11 +1700,13 @@ FRAGMENT_SHADER_CODE /* clang-format on */ } +#if !defined(USE_SHADOW_TO_OPACITY) + #if defined(ALPHA_SCISSOR_USED) if (alpha < alpha_scissor) { discard; } -#endif +#endif // ALPHA_SCISSOR_USED #ifdef USE_OPAQUE_PREPASS @@ -1654,14 +1714,16 @@ FRAGMENT_SHADER_CODE discard; } -#endif +#endif // USE_OPAQUE_PREPASS + +#endif // !USE_SHADOW_TO_OPACITY #if defined(ENABLE_NORMALMAP) normalmap.xy = normalmap.xy * 2.0 - 1.0; normalmap.z = sqrt(max(0.0, 1.0 - dot(normalmap.xy, normalmap.xy))); //always ignore Z, as it can be RG packed, Z may be pos/neg, etc. - normal = normalize(mix(normal_interp, tangent * normalmap.x + binormal * normalmap.y + normal * normalmap.z, normaldepth)) * side; + normal = normalize(mix(normal, tangent * normalmap.x + binormal * normalmap.y + normal * normalmap.z, normaldepth)); #endif @@ -1702,7 +1764,7 @@ FRAGMENT_SHADER_CODE vec3 ambient_light; vec3 env_reflection_light = vec3(0.0, 0.0, 0.0); - vec3 eye_vec = -normalize(vertex_interp); + vec3 eye_vec = view; #ifdef USE_RADIANCE_MAP @@ -1739,6 +1801,7 @@ FRAGMENT_SHADER_CODE ambient_light = vec3(0.0, 0.0, 0.0); #else ambient_light = ambient_light_color.rgb; + env_reflection_light = bg_color.rgb * bg_energy; #endif //AMBIENT_LIGHT_DISABLED #endif @@ -1746,10 +1809,98 @@ FRAGMENT_SHADER_CODE ambient_light *= ambient_energy; float specular_blob_intensity = 1.0; + #if defined(SPECULAR_TOON) specular_blob_intensity *= specular * 2.0; #endif +#ifdef USE_GI_PROBES + gi_probes_compute(vertex, normal, roughness, env_reflection_light, ambient_light); + +#endif + +#ifdef USE_LIGHTMAP + ambient_light = texture(lightmap, uv2).rgb * lightmap_energy; +#endif + +#ifdef USE_LIGHTMAP_CAPTURE + { + vec3 cone_dirs[12] = vec3[]( + vec3(0.0, 0.0, 1.0), + vec3(0.866025, 0.0, 0.5), + vec3(0.267617, 0.823639, 0.5), + vec3(-0.700629, 0.509037, 0.5), + vec3(-0.700629, -0.509037, 0.5), + vec3(0.267617, -0.823639, 0.5), + vec3(0.0, 0.0, -1.0), + vec3(0.866025, 0.0, -0.5), + vec3(0.267617, 0.823639, -0.5), + vec3(-0.700629, 0.509037, -0.5), + vec3(-0.700629, -0.509037, -0.5), + vec3(0.267617, -0.823639, -0.5)); + + vec3 local_normal = normalize(camera_matrix * vec4(normal, 0.0)).xyz; + vec4 captured = vec4(0.0); + float sum = 0.0; + for (int i = 0; i < 12; i++) { + float amount = max(0.0, dot(local_normal, cone_dirs[i])); //not correct, but creates a nice wrap around effect + captured += lightmap_captures[i] * amount; + sum += amount; + } + + captured /= sum; + + if (lightmap_capture_sky) { + ambient_light = mix(ambient_light, captured.rgb, captured.a); + } else { + ambient_light = captured.rgb; + } + } +#endif + +#ifdef USE_FORWARD_LIGHTING + + highp vec4 reflection_accum = vec4(0.0, 0.0, 0.0, 0.0); + highp vec4 ambient_accum = vec4(0.0, 0.0, 0.0, 0.0); + for (int i = 0; i < reflection_count; i++) { + reflection_process(reflection_indices[i], vertex, normal, binormal, tangent, roughness, anisotropy, ambient_light, env_reflection_light, reflection_accum, ambient_accum); + } + + if (reflection_accum.a > 0.0) { + specular_light += reflection_accum.rgb / reflection_accum.a; + } else { + specular_light += env_reflection_light; + } +#if !defined(USE_LIGHTMAP) && !defined(USE_LIGHTMAP_CAPTURE) + if (ambient_accum.a > 0.0) { + ambient_light = ambient_accum.rgb / ambient_accum.a; + } +#endif +#endif + + { + +#if defined(DIFFUSE_TOON) + //simplify for toon, as + specular_light *= specular * metallic * albedo * 2.0; +#else + + // scales the specular reflections, needs to be be computed before lighting happens, + // but after environment, GI, and reflection probes are added + // Environment brdf approximation (Lazarov 2013) + // see https://www.unrealengine.com/en-US/blog/physically-based-shading-on-mobile + const vec4 c0 = vec4(-1.0, -0.0275, -0.572, 0.022); + const vec4 c1 = vec4(1.0, 0.0425, 1.04, -0.04); + vec4 r = roughness * c0 + c1; + float ndotv = clamp(dot(normal, eye_vec), 0.0, 1.0); + float a004 = min(r.x * r.x, exp2(-9.28 * ndotv)) * r.x + r.y; + vec2 env = vec2(-1.04, 1.04) * a004 + r.zw; + + vec3 f0 = F0(metallic, specular, albedo); + specular_light *= env.x * f0 + env.y; +#endif + } + #if defined(USE_LIGHT_DIRECTIONAL) vec3 light_attenuation = vec3(1.0); @@ -1892,91 +2043,49 @@ FRAGMENT_SHADER_CODE specular_light *= mix(vec3(1.0), light_attenuation, specular_light_interp.a); #else - light_compute(normal, -light_direction_attenuation.xyz, eye_vec, binormal, tangent, light_color_energy.rgb, light_attenuation, albedo, transmission, light_params.z * specular_blob_intensity, roughness, metallic, rim, rim_tint, clearcoat, clearcoat_gloss, anisotropy, diffuse_light, specular_light); + light_compute(normal, -light_direction_attenuation.xyz, eye_vec, binormal, tangent, light_color_energy.rgb, light_attenuation, albedo, transmission, light_params.z * specular_blob_intensity, roughness, metallic, specular, rim, rim_tint, clearcoat, clearcoat_gloss, anisotropy, diffuse_light, specular_light, alpha); #endif #endif //#USE_LIGHT_DIRECTIONAL -#ifdef USE_GI_PROBES - gi_probes_compute(vertex, normal, roughness, env_reflection_light, ambient_light); - -#endif - -#ifdef USE_LIGHTMAP - ambient_light = texture(lightmap, uv2).rgb * lightmap_energy; -#endif - -#ifdef USE_LIGHTMAP_CAPTURE - { - vec3 cone_dirs[12] = vec3[]( - vec3(0, 0, 1), - vec3(0.866025, 0, 0.5), - vec3(0.267617, 0.823639, 0.5), - vec3(-0.700629, 0.509037, 0.5), - vec3(-0.700629, -0.509037, 0.5), - vec3(0.267617, -0.823639, 0.5), - vec3(0, 0, -1), - vec3(0.866025, 0, -0.5), - vec3(0.267617, 0.823639, -0.5), - vec3(-0.700629, 0.509037, -0.5), - vec3(-0.700629, -0.509037, -0.5), - vec3(0.267617, -0.823639, -0.5)); - - vec3 local_normal = normalize(camera_matrix * vec4(normal, 0.0)).xyz; - vec4 captured = vec4(0.0); - float sum = 0.0; - for (int i = 0; i < 12; i++) { - float amount = max(0.0, dot(local_normal, cone_dirs[i])); //not correct, but creates a nice wrap around effect - captured += lightmap_captures[i] * amount; - sum += amount; - } - - captured /= sum; - - if (lightmap_capture_sky) { - ambient_light = mix(ambient_light, captured.rgb, captured.a); - } else { - ambient_light = captured.rgb; - } - } -#endif - #ifdef USE_FORWARD_LIGHTING - highp vec4 reflection_accum = vec4(0.0, 0.0, 0.0, 0.0); - highp vec4 ambient_accum = vec4(0.0, 0.0, 0.0, 0.0); - for (int i = 0; i < reflection_count; i++) { - reflection_process(reflection_indices[i], vertex, normal, binormal, tangent, roughness, anisotropy, ambient_light, env_reflection_light, reflection_accum, ambient_accum); - } - - if (reflection_accum.a > 0.0) { - specular_light += reflection_accum.rgb / reflection_accum.a; - } else { - specular_light += env_reflection_light; - } -#ifndef USE_LIGHTMAP - if (ambient_accum.a > 0.0) { - ambient_light = ambient_accum.rgb / ambient_accum.a; - } -#endif - #ifdef USE_VERTEX_LIGHTING diffuse_light *= albedo; #else for (int i = 0; i < omni_light_count; i++) { - light_process_omni(omni_light_indices[i], vertex, eye_vec, normal, binormal, tangent, albedo, transmission, roughness, metallic, rim, rim_tint, clearcoat, clearcoat_gloss, anisotropy, specular_blob_intensity, diffuse_light, specular_light); + light_process_omni(omni_light_indices[i], vertex, eye_vec, normal, binormal, tangent, albedo, transmission, roughness, metallic, specular, rim, rim_tint, clearcoat, clearcoat_gloss, anisotropy, specular_blob_intensity, diffuse_light, specular_light, alpha); } for (int i = 0; i < spot_light_count; i++) { - light_process_spot(spot_light_indices[i], vertex, eye_vec, normal, binormal, tangent, albedo, transmission, roughness, metallic, rim, rim_tint, clearcoat, clearcoat_gloss, anisotropy, specular_blob_intensity, diffuse_light, specular_light); + light_process_spot(spot_light_indices[i], vertex, eye_vec, normal, binormal, tangent, albedo, transmission, roughness, metallic, specular, rim, rim_tint, clearcoat, clearcoat_gloss, anisotropy, specular_blob_intensity, diffuse_light, specular_light, alpha); } #endif //USE_VERTEX_LIGHTING #endif +#ifdef USE_SHADOW_TO_OPACITY + alpha = min(alpha, clamp(length(ambient_light), 0.0, 1.0)); + +#if defined(ALPHA_SCISSOR_USED) + if (alpha < alpha_scissor) { + discard; + } +#endif // ALPHA_SCISSOR_USED + +#ifdef USE_OPAQUE_PREPASS + + if (alpha < opaque_prepass_threshold) { + discard; + } + +#endif // USE_OPAQUE_PREPASS + +#endif // USE_SHADOW_TO_OPACITY + #ifdef RENDER_DEPTH //nothing happens, so a tree-ssa optimizer will result in no fragment shader :) #else @@ -1991,30 +2100,10 @@ FRAGMENT_SHADER_CODE diffuse_light *= ao_light_affect; #endif - //energy conservation + // base color remapping diffuse_light *= 1.0 - metallic; // TODO: avoid all diffuse and ambient light calculations when metallic == 1 up to this point ambient_light *= 1.0 - metallic; - { - -#if defined(DIFFUSE_TOON) - //simplify for toon, as - specular_light *= specular * metallic * albedo * 2.0; -#else - // Environment brdf approximation (Lazarov 2013) - // see https://www.unrealengine.com/en-US/blog/physically-based-shading-on-mobile - const vec4 c0 = vec4(-1.0, -0.0275, -0.572, 0.022); - const vec4 c1 = vec4(1.0, 0.0425, 1.04, -0.04); - vec4 r = roughness * c0 + c1; - float ndotv = clamp(dot(normal, eye_vec), 0.0, 1.0); - float a004 = min(r.x * r.x, exp2(-9.28 * ndotv)) * r.x + r.y; - vec2 AB = vec2(-1.04, 1.04) * a004 + r.zw; - - vec3 specular_color = metallic_to_specular_color(metallic, specular, albedo); - specular_light *= AB.x * specular_color + AB.y; -#endif - } - if (fog_color_enabled.a > 0.5) { float fog_amount = 0.0; @@ -2030,10 +2119,11 @@ FRAGMENT_SHADER_CODE //apply fog if (fog_depth_enabled) { + float fog_far = fog_depth_end > 0.0 ? fog_depth_end : z_far; - float fog_z = smoothstep(fog_depth_begin, z_far, length(vertex)); + float fog_z = smoothstep(fog_depth_begin, fog_far, length(vertex)); - fog_amount = pow(fog_z, fog_depth_curve); + fog_amount = pow(fog_z, fog_depth_curve) * fog_density; if (fog_transmit_enabled) { vec3 total_light = emission + ambient_light + specular_light + diffuse_light; float transmit = pow(fog_z, fog_transmit_curve); @@ -2050,7 +2140,7 @@ FRAGMENT_SHADER_CODE emission = emission * rev_amount + fog_color * fog_amount; ambient_light *= rev_amount; - specular_light *rev_amount; + specular_light *= rev_amount; diffuse_light *= rev_amount; } diff --git a/drivers/gles3/shaders/screen_space_reflection.glsl b/drivers/gles3/shaders/screen_space_reflection.glsl index 86546319a0..39f1ea6155 100644 --- a/drivers/gles3/shaders/screen_space_reflection.glsl +++ b/drivers/gles3/shaders/screen_space_reflection.glsl @@ -77,7 +77,7 @@ void main() { return; } //ray_dir = normalize(view_dir - normal * dot(normal,view_dir) * 2.0); - //ray_dir = normalize(vec3(1, 1, -1)); + //ray_dir = normalize(vec3(1.0, 1.0, -1.0)); //////////////// diff --git a/drivers/gles3/shaders/ssao.glsl b/drivers/gles3/shaders/ssao.glsl index be44365169..d9cdc3fc1f 100644 --- a/drivers/gles3/shaders/ssao.glsl +++ b/drivers/gles3/shaders/ssao.glsl @@ -16,15 +16,15 @@ void main() { #define TWO_PI 6.283185307179586476925286766559 #ifdef SSAO_QUALITY_HIGH -#define NUM_SAMPLES (80) +#define NUM_SAMPLES (16) #endif #ifdef SSAO_QUALITY_LOW -#define NUM_SAMPLES (15) +#define NUM_SAMPLES (8) #endif #if !defined(SSAO_QUALITY_LOW) && !defined(SSAO_QUALITY_HIGH) -#define NUM_SAMPLES (40) +#define NUM_SAMPLES (12) #endif // If using depth mip levels, the log of the maximum pixel offset before we need to switch to a lower diff --git a/drivers/gles3/shaders/tonemap.glsl b/drivers/gles3/shaders/tonemap.glsl index dd6d78849b..f1fe1742eb 100644 --- a/drivers/gles3/shaders/tonemap.glsl +++ b/drivers/gles3/shaders/tonemap.glsl @@ -124,13 +124,16 @@ vec4 texture2D_bicubic(sampler2D tex, vec2 uv, int p_lod) { #endif vec3 tonemap_filmic(vec3 color, float white) { - const float A = 0.15f; - const float B = 0.50f; + // exposure bias: input scale (color *= bias, white *= bias) to make the brightness consistent with other tonemappers + // also useful to scale the input to the range that the tonemapper is designed for (some require very high input values) + // has no effect on the curve's general shape or visual properties + const float exposure_bias = 2.0f; + const float A = 0.22f * exposure_bias * exposure_bias; // bias baked into constants for performance + const float B = 0.30f * exposure_bias; const float C = 0.10f; const float D = 0.20f; - const float E = 0.02f; + const float E = 0.01f; const float F = 0.30f; - const float W = 11.2f; vec3 color_tonemapped = ((color * (A * color + C * B) + D * E) / (color * (A * color + B) + D * F)) - E / F; float white_tonemapped = ((white * (A * white + C * B) + D * E) / (white * (A * white + B) + D * F)) - E / F; @@ -139,10 +142,11 @@ vec3 tonemap_filmic(vec3 color, float white) { } vec3 tonemap_aces(vec3 color, float white) { - const float A = 2.51f; - const float B = 0.03f; - const float C = 2.43f; - const float D = 0.59f; + const float exposure_bias = 0.85f; + const float A = 2.51f * exposure_bias * exposure_bias; + const float B = 0.03f * exposure_bias; + const float C = 2.43f * exposure_bias * exposure_bias; + const float D = 0.59f * exposure_bias; const float E = 0.14f; vec3 color_tonemapped = (color * (A * color + B)) / (color * (C * color + D) + E); @@ -151,8 +155,8 @@ vec3 tonemap_aces(vec3 color, float white) { return clamp(color_tonemapped / white_tonemapped, vec3(0.0f), vec3(1.0f)); } -vec3 tonemap_reindhart(vec3 color, float white) { - return clamp((color) / (1.0f + color) * (1.0f + (color / (white))), vec3(0.0f), vec3(1.0f)); // whitepoint is probably not in linear space here! +vec3 tonemap_reinhard(vec3 color, float white) { + return clamp((white * color + color) / (color * white + white), vec3(0.0f), vec3(1.0f)); } vec3 linear_to_srgb(vec3 color) { // convert linear rgb to srgb, assumes clamped input in range [0;1] @@ -160,9 +164,10 @@ vec3 linear_to_srgb(vec3 color) { // convert linear rgb to srgb, assumes clamped return mix((vec3(1.0f) + a) * pow(color.rgb, vec3(1.0f / 2.4f)) - a, 12.92f * color.rgb, lessThan(color.rgb, vec3(0.0031308f))); } -vec3 apply_tonemapping(vec3 color, float white) { // inputs are LINEAR, always outputs clamped [0;1] color -#ifdef USE_REINDHART_TONEMAPPER - return tonemap_reindhart(color, white); +// inputs are LINEAR, If Linear tonemapping is selected no transform is performed else outputs are clamped [0, 1] color +vec3 apply_tonemapping(vec3 color, float white) { +#ifdef USE_REINHARD_TONEMAPPER + return tonemap_reinhard(color, white); #endif #ifdef USE_FILMIC_TONEMAPPER @@ -173,7 +178,7 @@ vec3 apply_tonemapping(vec3 color, float white) { // inputs are LINEAR, always o return tonemap_aces(color, white); #endif - return clamp(color, vec3(0.0f), vec3(1.0f)); // no other selected -> linear + return color; // no other selected -> linear: no color transform applied } vec3 gather_glow(sampler2D tex, vec2 uv) { // sample all selected glow levels @@ -216,10 +221,14 @@ vec3 apply_glow(vec3 color, vec3 glow) { // apply glow using the selected blendi #endif #ifdef USE_GLOW_SCREEN + //need color clamping + color = clamp(color, vec3(0.0f), vec3(1.0f)); color = max((color + glow) - (color * glow), vec3(0.0)); #endif #ifdef USE_GLOW_SOFTLIGHT + //need color clamping + color = clamp(color, vec3(0.0f), vec3(1.0)); glow = glow * vec3(0.5f) + vec3(0.5f); color.r = (glow.r <= 0.5f) ? (color.r - (1.0f - 2.0f * glow.r) * color.r * (1.0f - color.r)) : (((glow.r > 0.5f) && (color.r <= 0.25f)) ? (color.r + (2.0f * glow.r - 1.0f) * (4.0f * color.r * (4.0f * color.r + 1.0f) * (color.r - 1.0f) + 7.0f * color.r)) : (color.r + (2.0f * glow.r - 1.0f) * (sqrt(color.r) - color.r))); @@ -261,14 +270,16 @@ void main() { color *= exposure; - // Early Tonemap & SRGB Conversion + // Early Tonemap & SRGB Conversion; note that Linear tonemapping does not clamp to [0, 1]; some operations below expect a [0, 1] range and will clamp color = apply_tonemapping(color, white); #ifdef KEEP_3D_LINEAR // leave color as is (-> don't convert to SRGB) #else - color = linear_to_srgb(color); // regular linear -> SRGB conversion + //need color clamping + color = clamp(color, vec3(0.0f), vec3(1.0f)); + color = linear_to_srgb(color); // regular linear -> SRGB conversion (needs clamped values) #endif // Glow @@ -278,6 +289,7 @@ void main() { // high dynamic range -> SRGB glow = apply_tonemapping(glow, white); + glow = clamp(glow, vec3(0.0f), vec3(1.0f)); glow = linear_to_srgb(glow); color = apply_glow(color, glow); |