diff options
Diffstat (limited to 'drivers/gles2/shaders/scene.glsl')
| -rw-r--r-- | drivers/gles2/shaders/scene.glsl | 204 |
1 files changed, 157 insertions, 47 deletions
diff --git a/drivers/gles2/shaders/scene.glsl b/drivers/gles2/shaders/scene.glsl index 6c3d3baccd..2aef913ae8 100644 --- a/drivers/gles2/shaders/scene.glsl +++ b/drivers/gles2/shaders/scene.glsl @@ -59,6 +59,10 @@ uniform ivec2 skeleton_texture_size; #endif +uniform highp mat4 skeleton_transform; +uniform highp mat4 skeleton_transform_inverse; +uniform bool skeleton_in_world_coords; + #endif #ifdef USE_INSTANCING @@ -96,6 +100,10 @@ uniform float light_normal_bias; // varyings // +#if defined(RENDER_DEPTH) && defined(USE_RGBA_SHADOWS) +varying highp vec4 position_interp; +#endif + varying highp vec3 vertex_interp; varying vec3 normal_interp; @@ -158,6 +166,7 @@ varying highp vec3 specular_interp; // general for all lights uniform highp vec4 light_color; +uniform highp vec4 shadow_color; uniform highp float light_specular; // directional @@ -354,7 +363,7 @@ void main() { uv2_interp = uv2_attrib; #endif -#ifdef OVERRIDE_POSITION +#if defined(OVERRIDE_POSITION) highp vec4 position; #endif @@ -399,7 +408,13 @@ void main() { #endif - world_matrix = bone_transform * world_matrix; + if (skeleton_in_world_coords) { + bone_transform = skeleton_transform * (bone_transform * skeleton_transform_inverse); + world_matrix = bone_transform * world_matrix; + } else { + world_matrix = world_matrix * bone_transform; + } + #endif #ifdef USE_INSTANCING @@ -409,9 +424,12 @@ void main() { #endif + mat4 local_projection_matrix = projection_matrix; + mat4 modelview = camera_inverse_matrix * world_matrix; float roughness = 1.0; +#define projection_matrix local_projection_matrix #define world_transform world_matrix { @@ -646,25 +664,29 @@ VERTEX_SHADER_CODE #endif //use vertex lighting -#ifdef OVERRIDE_POSITION +#if defined(OVERRIDE_POSITION) gl_Position = position; #else gl_Position = projection_matrix * vec4(vertex_interp, 1.0); #endif + +#if defined(RENDER_DEPTH) && defined(USE_RGBA_SHADOWS) + position_interp = gl_Position; +#endif } /* clang-format off */ [fragment] +// texture2DLodEXT and textureCubeLodEXT are fragment shader specific. +// Do not copy these defines in the vertex section. #ifndef USE_GLES_OVER_GL - #ifdef GL_EXT_shader_texture_lod #extension GL_EXT_shader_texture_lod : enable #define texture2DLod(img, coord, lod) texture2DLodEXT(img, coord, lod) #define textureCubeLod(img, coord, lod) textureCubeLodEXT(img, coord, lod) #endif - -#endif +#endif // !USE_GLES_OVER_GL #ifdef GL_ARB_shader_texture_lod #extension GL_ARB_shader_texture_lod : enable @@ -675,9 +697,6 @@ VERTEX_SHADER_CODE #define textureCubeLod(img, coord, lod) textureCube(img, coord, lod) #endif - - - #ifdef USE_GLES_OVER_GL #define lowp #define mediump @@ -723,6 +742,9 @@ uniform vec2 screen_pixel_size; #if defined(SCREEN_TEXTURE_USED) uniform highp sampler2D screen_texture; //texunit:-4 #endif +#if defined(DEPTH_TEXTURE_USED) +uniform highp sampler2D depth_texture; //texunit:-4 +#endif #ifdef USE_REFLECTION_PROBE1 @@ -892,6 +914,7 @@ uniform mat4 radiance_inverse_xform; #endif +uniform vec4 bg_color; uniform float bg_energy; uniform float ambient_sky_contribution; @@ -900,6 +923,8 @@ uniform float ambient_energy; #ifdef USE_LIGHTING +uniform highp vec4 shadow_color; + #ifdef USE_VERTEX_LIGHTING //get from vertex @@ -912,6 +937,7 @@ uniform highp vec3 light_direction; //may be used by fog, so leave here //done in fragment // general for all lights uniform highp vec4 light_color; + uniform highp float light_specular; // directional @@ -968,6 +994,10 @@ uniform vec4 light_clamp; // varyings // +#if defined(RENDER_DEPTH) && defined(USE_RGBA_SHADOWS) +varying highp vec4 position_interp; +#endif + varying highp vec3 vertex_interp; varying vec3 normal_interp; @@ -1121,7 +1151,8 @@ void light_compute( float clearcoat_gloss, float anisotropy, inout vec3 diffuse_light, - inout vec3 specular_light) { + inout vec3 specular_light, + inout float alpha) { //this makes lights behave closer to linear, but then addition of lights looks bad //better left disabled @@ -1276,10 +1307,10 @@ LIGHT_SHADER_CODE // shlick+ggx as default #if defined(LIGHT_USE_ANISOTROPY) - float alpha = roughness * roughness; + float alpha_ggx = roughness * roughness; float aspect = sqrt(1.0 - anisotropy * 0.9); - float ax = alpha / aspect; - float ay = alpha * aspect; + 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, cNdotH); @@ -1287,10 +1318,10 @@ LIGHT_SHADER_CODE float G = V_GGX_anisotropic(ax, ay, dot(T, V), dot(T, L), dot(B, V), dot(B, L), cNdotV, cNdotL); #else - float alpha = roughness * roughness; - float D = D_GGX(cNdotH, alpha); - //float G = G_GGX_2cos(cNdotL, alpha) * G_GGX_2cos(cNdotV, alpha); - float G = V_GGX(cNdotL, 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); + float G = V_GGX(cNdotL, cNdotV, alpha_ggx); #endif // F vec3 f0 = F0(metallic, specular, diffuse_color); @@ -1320,6 +1351,10 @@ LIGHT_SHADER_CODE #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) } @@ -1328,8 +1363,18 @@ LIGHT_SHADER_CODE #ifdef USE_SHADOW -#define SAMPLE_SHADOW_TEXEL(p_shadow, p_pos, p_depth) step(p_depth, texture2D(p_shadow, p_pos).r) -#define SAMPLE_SHADOW_TEXEL_PROJ(p_shadow, p_pos) step(p_pos.z, texture2DProj(p_shadow, p_pos).r) +#ifdef USE_RGBA_SHADOWS + +#define SHADOW_DEPTH(m_val) dot(m_val, vec4(1.0 / (256.0 * 256.0 * 256.0), 1.0 / (256.0 * 256.0), 1.0 / 256.0, 1.0)) + +#else + +#define SHADOW_DEPTH(m_val) (m_val).r + +#endif + +#define SAMPLE_SHADOW_TEXEL(p_shadow, p_pos, p_depth) step(p_depth, SHADOW_DEPTH(texture2D(p_shadow, p_pos))) +#define SAMPLE_SHADOW_TEXEL_PROJ(p_shadow, p_pos) step(p_pos.z, SHADOW_DEPTH(texture2DProj(p_shadow, p_pos))) float sample_shadow(highp sampler2D shadow, highp vec4 spos) { @@ -1430,6 +1475,9 @@ void main() { float anisotropy = 0.0; vec2 anisotropy_flow = vec2(1.0, 0.0); float sss_strength = 0.0; //unused + // gl_FragDepth is not available in GLES2, so writing to DEPTH is not converted to gl_FragDepth by Godot compiler resulting in a + // compile error because DEPTH is not a variable. + float m_DEPTH = 0.0; float alpha = 1.0; float side = 1.0; @@ -1492,20 +1540,29 @@ FRAGMENT_SHADER_CODE vec3 eye_position = view; +#if !defined(USE_SHADOW_TO_OPACITY) + #if defined(ALPHA_SCISSOR_USED) if (alpha < alpha_scissor) { discard; } -#endif +#endif // ALPHA_SCISSOR_USED #ifdef USE_DEPTH_PREPASS if (alpha < 0.99) { discard; } -#endif +#endif // USE_DEPTH_PREPASS + +#endif // !USE_SHADOW_TO_OPACITY #ifdef BASE_PASS //none + +#ifdef AMBIENT_LIGHT_DISABLED + ambient_light = vec3(0.0, 0.0, 0.0); +#else + #ifdef USE_RADIANCE_MAP vec3 ref_vec = reflect(-eye_position, N); @@ -1514,7 +1571,6 @@ FRAGMENT_SHADER_CODE ref_vec.z *= -1.0; specular_light = textureCubeLod(radiance_map, ref_vec, roughness * RADIANCE_MAX_LOD).xyz * bg_energy; - { vec3 ambient_dir = normalize((radiance_inverse_xform * vec4(normal, 0.0)).xyz); vec3 env_ambient = textureCubeLod(radiance_map, ambient_dir, RADIANCE_MAX_LOD).xyz * bg_energy; @@ -1525,9 +1581,11 @@ FRAGMENT_SHADER_CODE #else ambient_light = ambient_color.rgb; + specular_light = bg_color.rgb * bg_energy; #endif +#endif // AMBIENT_LIGHT_DISABLED ambient_light *= ambient_energy; #if defined(USE_REFLECTION_PROBE1) || defined(USE_REFLECTION_PROBE2) @@ -1583,6 +1641,19 @@ FRAGMENT_SHADER_CODE #endif // defined(USE_REFLECTION_PROBE1) || defined(USE_REFLECTION_PROBE2) + // scales the specular reflections, needs to be be computed before lighting happens, + // but after environment and reflection probes are added + //TODO: this curve is not really designed for gammaspace, should be adjusted + 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_position), 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; + #ifdef USE_LIGHTMAP //ambient light will come entirely from lightmap is lightmap is used ambient_light = texture2D(lightmap, uv2_interp).rgb * lightmap_energy; @@ -1591,14 +1662,14 @@ FRAGMENT_SHADER_CODE #ifdef USE_LIGHTMAP_CAPTURE { vec3 cone_dirs[12] = 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), vec3(0.267617, -0.823639, 0.5), - 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), @@ -1654,6 +1725,8 @@ FRAGMENT_SHADER_CODE #endif +#if !defined(SHADOWS_DISABLED) + #ifdef USE_SHADOW { highp vec4 splane = shadow_coord; @@ -1680,10 +1753,12 @@ FRAGMENT_SHADER_CODE float shadow = sample_shadow(light_shadow_atlas, splane); - light_att *= shadow; + light_att *= mix(shadow_color.rgb, vec3(1.0), shadow); } #endif +#endif //SHADOWS_DISABLED + #endif //type omni #ifdef LIGHT_MODE_DIRECTIONAL @@ -1694,6 +1769,8 @@ FRAGMENT_SHADER_CODE #endif float depth_z = -vertex.z; +#if !defined(SHADOWS_DISABLED) + #ifdef USE_SHADOW #ifdef USE_VERTEX_LIGHTING @@ -1757,7 +1834,7 @@ FRAGMENT_SHADER_CODE shadow_att = mix(shadow_att, shadow_att2, pssm_blend); } #endif - light_att *= shadow_att; + light_att *= mix(shadow_color.rgb, vec3(1.0), shadow_att); } #endif //LIGHT_USE_PSSM4 @@ -1798,14 +1875,14 @@ FRAGMENT_SHADER_CODE shadow_att = mix(shadow_att, shadow_att2, pssm_blend); } #endif - light_att *= shadow_att; + light_att *= mix(shadow_color.rgb, vec3(1.0), shadow_att); } #endif //LIGHT_USE_PSSM2 #if !defined(LIGHT_USE_PSSM4) && !defined(LIGHT_USE_PSSM2) - light_att *= sample_shadow(light_directional_shadow, shadow_coord); + light_att *= mix(shadow_color.rgb, vec3(1.0), sample_shadow(light_directional_shadow, shadow_coord)); #endif //orthogonal #else //fragment version of pssm @@ -1905,13 +1982,15 @@ FRAGMENT_SHADER_CODE } #endif - light_att *= shadow; + light_att *= mix(shadow_color.rgb, vec3(1.0), shadow); } } #endif //use vertex lighting #endif //use shadow +#endif // SHADOWS_DISABLED + #endif #ifdef LIGHT_MODE_SPOT @@ -1948,15 +2027,19 @@ FRAGMENT_SHADER_CODE #endif +#if !defined(SHADOWS_DISABLED) + #ifdef USE_SHADOW { highp vec4 splane = shadow_coord; float shadow = sample_shadow(light_shadow_atlas, splane); - light_att *= shadow; + light_att *= mix(shadow_color.rgb, vec3(1.0), shadow); } #endif +#endif // SHADOWS_DISABLED + #endif // LIGHT_MODE_SPOT #ifdef USE_VERTEX_LIGHTING @@ -1987,13 +2070,32 @@ FRAGMENT_SHADER_CODE clearcoat_gloss, anisotropy, diffuse_light, - specular_light); + specular_light, + alpha); #endif //vertex lighting #endif //USE_LIGHTING //compute and merge +#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_DEPTH_PREPASS + if (alpha < 0.99) { + discard; + } +#endif // USE_DEPTH_PREPASS + +#endif // !USE_SHADOW_TO_OPACITY + #ifndef RENDER_DEPTH #ifdef SHADELESS @@ -2020,17 +2122,6 @@ FRAGMENT_SHADER_CODE #if defined(DIFFUSE_TOON) //simplify for toon, as specular_light *= specular * metallic * albedo * 2.0; -#else - //TODO: this curve is not really designed for gammaspace, should be adjusted - 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_position), 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 } @@ -2042,14 +2133,17 @@ FRAGMENT_SHADER_CODE #endif // gl_FragColor = vec4(normal, 1.0); -#endif //unshaded - //apply fog #if defined(FOG_DEPTH_ENABLED) || defined(FOG_HEIGHT_ENABLED) #if defined(USE_VERTEX_LIGHTING) +#if defined(BASE_PASS) gl_FragColor.rgb = mix(gl_FragColor.rgb, fog_interp.rgb, fog_interp.a); +#else + gl_FragColor.rgb *= (1.0 - fog_interp.a); +#endif // BASE_PASS + #else //pixel based fog float fog_amount = 0.0; @@ -2083,11 +2177,27 @@ FRAGMENT_SHADER_CODE } #endif +#if defined(BASE_PASS) gl_FragColor.rgb = mix(gl_FragColor.rgb, fog_color, fog_amount); +#else + gl_FragColor.rgb *= (1.0 - fog_amount); +#endif // BASE_PASS #endif //use vertex lit #endif // defined(FOG_DEPTH_ENABLED) || defined(FOG_HEIGHT_ENABLED) -#endif // not RENDER_DEPTH +#endif //unshaded + +#else // not RENDER_DEPTH +//depth render +#ifdef USE_RGBA_SHADOWS + + highp float depth = ((position_interp.z / position_interp.w) + 1.0) * 0.5 + 0.0; // bias + highp vec4 comp = fract(depth * vec4(256.0 * 256.0 * 256.0, 256.0 * 256.0, 256.0, 1.0)); + comp -= comp.xxyz * vec4(0.0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0); + gl_FragColor = comp; + +#endif +#endif } |