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More optimizations on the mobile renderer.
* Specialization constants used to disable anything not needed to draw * Added softshadow and projector support on mobile. This new approach ensures mobile shaders are smaller and more efficient, but relies on more pipeline versions compiled on demand. As a result, random stalls can ocur like in Godot 3.x. These will be solved by using background compilation and fallbacks eventually (but needs to be tested first).
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reduz
@@ -373,26 +373,38 @@ void main() {
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//use medium precision for floats on mobile.
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precision mediump float;
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precision highp int;
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/* Specialization Constants */
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/* Specialization Constants (Toggles) */
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#if !defined(MODE_RENDER_DEPTH)
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layout(constant_id = 0) const bool sc_use_forward_gi = false;
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layout(constant_id = 1) const bool sc_use_light_projector = false;
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layout(constant_id = 2) const bool sc_use_light_soft_shadows = false;
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layout(constant_id = 3) const bool sc_use_directional_soft_shadows = false;
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#if !defined(MODE_UNSHADED)
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/* Specialization Constants (Values) */
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layout(constant_id = 0) const bool sc_use_light_projector = false;
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layout(constant_id = 1) const bool sc_use_light_soft_shadows = false;
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layout(constant_id = 2) const bool sc_use_directional_soft_shadows = false;
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layout(constant_id = 6) const uint sc_soft_shadow_samples = 4;
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layout(constant_id = 7) const uint sc_penumbra_shadow_samples = 4;
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layout(constant_id = 3) const uint sc_soft_shadow_samples = 4;
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layout(constant_id = 4) const uint sc_penumbra_shadow_samples = 4;
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layout(constant_id = 8) const uint sc_directional_soft_shadow_samples = 4;
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layout(constant_id = 9) const uint sc_directional_penumbra_shadow_samples = 4;
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layout(constant_id = 5) const uint sc_directional_soft_shadow_samples = 4;
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layout(constant_id = 6) const uint sc_directional_penumbra_shadow_samples = 4;
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layout(constant_id = 10) const bool sc_decal_use_mipmaps = true;
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layout(constant_id = 11) const bool sc_projector_use_mipmaps = true;
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layout(constant_id = 8) const bool sc_projector_use_mipmaps = true;
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layout(constant_id = 9) const bool sc_disable_omni_lights = false;
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layout(constant_id = 10) const bool sc_disable_spot_lights = false;
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layout(constant_id = 11) const bool sc_disable_reflection_probes = false;
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layout(constant_id = 12) const bool sc_disable_directional_lights = false;
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#endif //!MODE_UNSHADED
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layout(constant_id = 7) const bool sc_decal_use_mipmaps = true;
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layout(constant_id = 13) const bool sc_disable_decals = false;
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layout(constant_id = 14) const bool sc_disable_fog = false;
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#endif //!MODE_RENDER_DEPTH
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/* Include our forward mobile UBOs definitions etc. */
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#include "scene_forward_mobile_inc.glsl"
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@@ -735,7 +747,7 @@ void main() {
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// to maximize VGPR usage
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// Draw "fixed" fog before volumetric fog to ensure volumetric fog can appear in front of the sky.
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if (scene_data.fog_enabled) {
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if (!sc_disable_fog && scene_data.fog_enabled) {
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fog = fog_process(vertex);
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}
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@@ -753,7 +765,7 @@ void main() {
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vec3 vertex_ddx = dFdx(vertex);
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vec3 vertex_ddy = dFdy(vertex);
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{ //Decals
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if (!sc_disable_decals) { //Decals
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// must implement
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uint decal_indices = draw_call.decals.x;
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@@ -774,25 +786,35 @@ void main() {
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continue; //out of decal
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}
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//we need ddx/ddy for mipmaps, so simulate them
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vec2 ddx = (decals.data[decal_index].xform * vec4(vertex_ddx, 0.0)).xz;
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vec2 ddy = (decals.data[decal_index].xform * vec4(vertex_ddy, 0.0)).xz;
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float fade = pow(1.0 - (uv_local.y > 0.0 ? uv_local.y : -uv_local.y), uv_local.y > 0.0 ? decals.data[decal_index].upper_fade : decals.data[decal_index].lower_fade);
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if (decals.data[decal_index].normal_fade > 0.0) {
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fade *= smoothstep(decals.data[decal_index].normal_fade, 1.0, dot(normal_interp, decals.data[decal_index].normal) * 0.5 + 0.5);
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}
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//we need ddx/ddy for mipmaps, so simulate them
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vec2 ddx = (decals.data[decal_index].xform * vec4(vertex_ddx, 0.0)).xz;
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vec2 ddy = (decals.data[decal_index].xform * vec4(vertex_ddy, 0.0)).xz;
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if (decals.data[decal_index].albedo_rect != vec4(0.0)) {
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//has albedo
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vec4 decal_albedo = textureGrad(sampler2D(decal_atlas_srgb, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), uv_local.xz * decals.data[decal_index].albedo_rect.zw + decals.data[decal_index].albedo_rect.xy, ddx * decals.data[decal_index].albedo_rect.zw, ddy * decals.data[decal_index].albedo_rect.zw);
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vec4 decal_albedo;
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if (sc_decal_use_mipmaps) {
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decal_albedo = textureGrad(sampler2D(decal_atlas_srgb, decal_sampler), uv_local.xz * decals.data[decal_index].albedo_rect.zw + decals.data[decal_index].albedo_rect.xy, ddx * decals.data[decal_index].albedo_rect.zw, ddy * decals.data[decal_index].albedo_rect.zw);
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} else {
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decal_albedo = textureLod(sampler2D(decal_atlas_srgb, decal_sampler), uv_local.xz * decals.data[decal_index].albedo_rect.zw + decals.data[decal_index].albedo_rect.xy, 0.0);
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}
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decal_albedo *= decals.data[decal_index].modulate;
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decal_albedo.a *= fade;
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albedo = mix(albedo, decal_albedo.rgb, decal_albedo.a * decals.data[decal_index].albedo_mix);
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if (decals.data[decal_index].normal_rect != vec4(0.0)) {
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vec3 decal_normal = textureGrad(sampler2D(decal_atlas, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), uv_local.xz * decals.data[decal_index].normal_rect.zw + decals.data[decal_index].normal_rect.xy, ddx * decals.data[decal_index].normal_rect.zw, ddy * decals.data[decal_index].normal_rect.zw).xyz;
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vec3 decal_normal;
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if (sc_decal_use_mipmaps) {
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decal_normal = textureGrad(sampler2D(decal_atlas, decal_sampler), uv_local.xz * decals.data[decal_index].normal_rect.zw + decals.data[decal_index].normal_rect.xy, ddx * decals.data[decal_index].normal_rect.zw, ddy * decals.data[decal_index].normal_rect.zw).xyz;
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} else {
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decal_normal = textureLod(sampler2D(decal_atlas, decal_sampler), uv_local.xz * decals.data[decal_index].normal_rect.zw + decals.data[decal_index].normal_rect.xy, 0.0).xyz;
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}
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decal_normal.xy = decal_normal.xy * vec2(2.0, -2.0) - vec2(1.0, -1.0); //users prefer flipped y normal maps in most authoring software
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decal_normal.z = sqrt(max(0.0, 1.0 - dot(decal_normal.xy, decal_normal.xy)));
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//convert to view space, use xzy because y is up
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@@ -802,7 +824,12 @@ void main() {
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}
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if (decals.data[decal_index].orm_rect != vec4(0.0)) {
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vec3 decal_orm = textureGrad(sampler2D(decal_atlas, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), uv_local.xz * decals.data[decal_index].orm_rect.zw + decals.data[decal_index].orm_rect.xy, ddx * decals.data[decal_index].orm_rect.zw, ddy * decals.data[decal_index].orm_rect.zw).xyz;
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vec3 decal_orm;
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if (sc_decal_use_mipmaps) {
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decal_orm = textureGrad(sampler2D(decal_atlas, decal_sampler), uv_local.xz * decals.data[decal_index].orm_rect.zw + decals.data[decal_index].orm_rect.xy, ddx * decals.data[decal_index].orm_rect.zw, ddy * decals.data[decal_index].orm_rect.zw).xyz;
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} else {
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decal_orm = textureLod(sampler2D(decal_atlas, decal_sampler), uv_local.xz * decals.data[decal_index].orm_rect.zw + decals.data[decal_index].orm_rect.xy, 0.0).xyz;
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}
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ao = mix(ao, decal_orm.r, decal_albedo.a);
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roughness = mix(roughness, decal_orm.g, decal_albedo.a);
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metallic = mix(metallic, decal_orm.b, decal_albedo.a);
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@@ -811,7 +838,11 @@ void main() {
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if (decals.data[decal_index].emission_rect != vec4(0.0)) {
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//emission is additive, so its independent from albedo
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emission += textureGrad(sampler2D(decal_atlas_srgb, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), uv_local.xz * decals.data[decal_index].emission_rect.zw + decals.data[decal_index].emission_rect.xy, ddx * decals.data[decal_index].emission_rect.zw, ddy * decals.data[decal_index].emission_rect.zw).xyz * decals.data[decal_index].emission_energy * fade;
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if (sc_decal_use_mipmaps) {
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emission += textureGrad(sampler2D(decal_atlas_srgb, decal_sampler), uv_local.xz * decals.data[decal_index].emission_rect.zw + decals.data[decal_index].emission_rect.xy, ddx * decals.data[decal_index].emission_rect.zw, ddy * decals.data[decal_index].emission_rect.zw).xyz * decals.data[decal_index].emission_energy * fade;
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} else {
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emission += textureLod(sampler2D(decal_atlas_srgb, decal_sampler), uv_local.xz * decals.data[decal_index].emission_rect.zw + decals.data[decal_index].emission_rect.xy, 0.0).xyz * decals.data[decal_index].emission_energy * fade;
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}
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}
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}
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} //Decals
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@@ -951,7 +982,7 @@ void main() {
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// skipping ssao, do we remove ssao totally?
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{ //Reflection probes
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if (!sc_disable_reflection_probes) { //Reflection probes
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vec4 reflection_accum = vec4(0.0, 0.0, 0.0, 0.0);
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vec4 ambient_accum = vec4(0.0, 0.0, 0.0, 0.0);
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@@ -1017,7 +1048,7 @@ void main() {
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// LIGHTING
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#if !defined(MODE_RENDER_DEPTH) && !defined(MODE_UNSHADED)
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{ //directional light
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if (!sc_disable_directional_lights) { //directional light
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// Do shadow and lighting in two passes to reduce register pressure
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uint shadow0 = 0;
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@@ -1347,7 +1378,7 @@ void main() {
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}
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} //directional light
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{ //omni lights
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if (!sc_disable_omni_lights) { //omni lights
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uint light_indices = draw_call.omni_lights.x;
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for (uint i = 0; i < 8; i++) {
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uint light_index = light_indices & 0xFF;
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@@ -1394,7 +1425,7 @@ void main() {
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}
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} //omni lights
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{ //spot lights
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if (!sc_disable_spot_lights) { //spot lights
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uint light_indices = draw_call.spot_lights.x;
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for (uint i = 0; i < 8; i++) {
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