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-rw-r--r--drivers/gles3/shaders/SCsub1
-rw-r--r--drivers/gles3/shaders/canvas.glsl11
-rw-r--r--drivers/gles3/shaders/lens_distorted.glsl64
-rw-r--r--drivers/gles3/shaders/scene.glsl78
-rw-r--r--drivers/gles3/shaders/tonemap.glsl30
5 files changed, 135 insertions, 49 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 53f563303a..8e8b693eb2 100644
--- a/drivers/gles3/shaders/canvas.glsl
+++ b/drivers/gles3/shaders/canvas.glsl
@@ -120,12 +120,12 @@ void main() {
vec4 color = color_attrib;
#ifdef USE_INSTANCING
- mat4 extra_matrix2 = extra_matrix * transpose(mat4(instance_xform0, instance_xform1, instance_xform2, vec4(0.0, 0.0, 0.0, 1.0)));
+ 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;
vec4 instance_custom = instance_custom_data;
#else
- mat4 extra_matrix2 = extra_matrix;
+ mat4 extra_matrix_instance = extra_matrix;
vec4 instance_custom = vec4(0.0);
#endif
@@ -157,7 +157,7 @@ void main() {
#endif
-#define extra_matrix extra_matrix2
+#define extra_matrix extra_matrix_instance
{
/* clang-format off */
@@ -182,7 +182,6 @@ VERTEX_SHADER_CODE
color_interp = color;
#ifdef USE_PIXEL_SNAP
-
outvec.xy = floor(outvec + 0.5).xy;
#endif
@@ -246,8 +245,8 @@ VERTEX_SHADER_CODE
pos = outvec.xy;
#endif
- local_rot.xy = normalize((modelview_matrix * (extra_matrix * vec4(1.0, 0.0, 0.0, 0.0))).xy);
- local_rot.zw = normalize((modelview_matrix * (extra_matrix * vec4(0.0, 1.0, 0.0, 0.0))).xy);
+ local_rot.xy = normalize((modelview_matrix * (extra_matrix_instance * vec4(1.0, 0.0, 0.0, 0.0))).xy);
+ local_rot.zw = normalize((modelview_matrix * (extra_matrix_instance * vec4(0.0, 1.0, 0.0, 0.0))).xy);
#ifdef USE_TEXTURE_RECT
local_rot.xy *= sign(src_rect.z);
local_rot.zw *= sign(src_rect.w);
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 12cbe02d0c..91ab34f775 100644
--- a/drivers/gles3/shaders/scene.glsl
+++ b/drivers/gles3/shaders/scene.glsl
@@ -3,6 +3,8 @@
#define M_PI 3.14159265359
+#define SHADER_IS_SRGB false
+
/*
from VisualServer:
@@ -514,6 +516,7 @@ VERTEX_SHADER_CODE
/* clang-format off */
[fragment]
+
/* texture unit usage, N is max_texture_unity-N
1-skeleton
@@ -533,6 +536,7 @@ uniform highp mat4 world_transform;
/* clang-format on */
#define M_PI 3.14159265359
+#define SHADER_IS_SRGB false
/* Varyings */
@@ -916,13 +920,14 @@ 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) {
#if defined(USE_LIGHT_SHADER_CODE)
// light is written by the light shader
@@ -1020,16 +1025,27 @@ LIGHT_SHADER_CODE
#if defined(SPECULAR_BLINN)
+ //normalized blinn
vec3 H = normalize(V + L);
float cNdotH = max(dot(N, H), 0.0);
- float intensity = pow(cNdotH, (1.0 - roughness) * 256.0);
+ 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);
+ float intensity = (blinn) / max(4.0 * cNdotV * cNdotL, 0.75);
+
specular_light += light_color * intensity * specular_blob_intensity * attenuation;
#elif defined(SPECULAR_PHONG)
vec3 R = normalize(-reflect(L, N));
float cRdotV = max(0.0, dot(R, V));
- float intensity = pow(cRdotV, (1.0 - roughness) * 256.0);
+ 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);
+ float intensity = (phong) / max(4.0 * cNdotV * cNdotL, 0.75);
+
specular_light += light_color * intensity * specular_blob_intensity * attenuation;
#elif defined(SPECULAR_TOON)
@@ -1054,11 +1070,10 @@ LIGHT_SHADER_CODE
#if defined(LIGHT_USE_ANISOTROPY)
+ float alpha = 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 / aspect;
+ float ay = alpha * aspect;
float XdotH = dot(T, H);
float YdotH = dot(B, H);
float D = D_GGX_anisotropic(cNdotH, ax, ay, XdotH, YdotH);
@@ -1070,11 +1085,11 @@ LIGHT_SHADER_CODE
float G = G_GGX_2cos(cNdotL, alpha) * G_GGX_2cos(cNdotV, alpha);
#endif
// F
- float F0 = 1.0; // FIXME
+ vec3 f0 = F0(metallic, specular, diffuse_color);
float cLdotH5 = SchlickFresnel(cLdotH);
- float F = mix(cLdotH5, 1.0, F0);
+ 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
@@ -1121,8 +1136,9 @@ 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));
@@ -1131,7 +1147,9 @@ 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));
@@ -1173,7 +1191,7 @@ 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) {
vec3 light_rel_vec = omni_lights[idx].light_pos_inv_radius.xyz - vertex;
float light_length = length(light_rel_vec);
@@ -1227,10 +1245,10 @@ 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);
}
-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) {
vec3 light_rel_vec = spot_lights[idx].light_pos_inv_radius.xyz - vertex;
float light_length = length(light_rel_vec);
@@ -1262,7 +1280,7 @@ 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);
}
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) {
@@ -1322,7 +1340,7 @@ 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;
@@ -1877,7 +1895,7 @@ 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);
#endif
#endif //#USE_LIGHT_DIRECTIONAL
@@ -1939,7 +1957,7 @@ FRAGMENT_SHADER_CODE
} else {
specular_light += env_reflection_light;
}
-#ifndef USE_LIGHTMAP
+#if !defined(USE_LIGHTMAP) && !defined(USE_LIGHTMAP_CAPTURE)
if (ambient_accum.a > 0.0) {
ambient_light = ambient_accum.rgb / ambient_accum.a;
}
@@ -1951,11 +1969,11 @@ FRAGMENT_SHADER_CODE
#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);
}
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);
}
#endif //USE_VERTEX_LIGHTING
@@ -1976,7 +1994,7 @@ 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;
@@ -1993,10 +2011,10 @@ FRAGMENT_SHADER_CODE
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;
+ vec2 env = 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;
+ vec3 f0 = F0(metallic, specular, albedo);
+ specular_light *= env.x * f0 + env.y;
#endif
}
@@ -2035,7 +2053,7 @@ 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/tonemap.glsl b/drivers/gles3/shaders/tonemap.glsl
index e4aa8d5730..80ad003c80 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 brighness 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]
@@ -161,8 +165,8 @@ vec3 linear_to_srgb(vec3 color) { // convert linear rgb to srgb, assumes clamped
}
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);
+#ifdef USE_REINHARD_TONEMAPPER
+ return tonemap_reinhard(color, white);
#endif
#ifdef USE_FILMIC_TONEMAPPER
@@ -173,7 +177,7 @@ 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 seleced -> linear
+ return clamp(color, vec3(0.0f), vec3(1.0f)); // no other selected -> linear
}
vec3 gather_glow(sampler2D tex, vec2 uv) { // sample all selected glow levels
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-19 07:33:05 +0000