soft shadows fixes

shaders/ds_light.glsl

@@ -28,14 +28,15 @@ uniform samplerCubeArray tex_depths_omni;
 uniform samplerCube tex_env;
 uniform int lights_start, lights_count, soft_shadows_samples = 16, noise_size = 64;
 uniform bool soft_shadows_enabled = false;
+uniform float soft_shadows_quality = 1.;
 
-uniform vec4 fog_color = vec4(0.5, 0.5, 0.5, 1);
-uniform float fog_decay = 10, fog_density = 0;
+uniform vec4 fog_color = vec4(0.5, 0.5, 0.5, 1.);
+uniform float fog_decay = 10., fog_density = 0.;
 uniform mat3 view_mat;
 const float _pe = 2.4e-7;
 
 const vec3 luma = vec3(0.299, 0.587, 0.114);
-const float _min_rough = 1.e-8, max_lod = 8;
+const float _min_rough = 1.e-8, max_lod = 8.;
 const float PI = 3.1416;
 
 ivec2 tc;
@@ -177,28 +178,21 @@ void calcLight(in int index, in vec3 n, in vec3 v) {
 		int layer = index - lights_start;
 		float shadow = 0.;
 		//float bias = abs(tan(PI/2.*(1 - abs(dot(normal, ldir)))) + 1) * z_near * 1;
-		float bias = (1. + 1. / abs(dot(normal, ldir))) * z_near * 2;
+		float bias = (1. + 1. / abs(dot(normal, ldir))) * z_near * 2.;
 		//bias = bias * bias + z_near;
 		
 		if (soft_shadows_enabled) {
 			
+			float depth = 1.;
 #ifdef SPOT
-			float depth = 1;
-			const int gm_size = 3;
+			const int gm_size = 2;
 			for (int i = -gm_size; i <= gm_size; ++i) {
 				for (int j = -gm_size; j <= gm_size; ++j) {
 					depth = min(depth, textureOffset(tex_depths_cone, vec3(shp.xy, layer), ivec2(i, j)).x);
 				}
 			}
-			depth = 1 / (1 - depth) - 1 + z_near;
-			float dz = max(0, shp.z - depth);
-			float ds = qgl_light_parameter[index].size * dz / (ldist - dz);
-			//qgl_FragColor.rgb = vec3(-texture(tex_depths_cone, vec3(shp.xy,layer)).r*1000);
-			//qgl_FragColor.rgb = vec3(depth);
-			//qgl_FragColor.rgb = vec3(dz);
 #else
-			float depth = 1;
-			const int gm_size = 3;
+			const int gm_size = 2;
 			for (int i = -gm_size; i <= gm_size; ++i) {
 				for (int j = -gm_size; j <= gm_size; ++j) {
 					for (int k = -gm_size; k <= gm_size; ++k) {
@@ -206,21 +200,23 @@ void calcLight(in int index, in vec3 n, in vec3 v) {
 					}
 				}
 			}
-			depth = 1 / (1 - depth) - 1 + z_near;
-			float dz = max(0, ldist - depth);
+			shp.z = ldist;
+#endif
+			depth = 1. / (1. - depth) - 1. + z_near;
+			float dz = max(0., shp.z - depth);
 			float ds = qgl_light_parameter[index].size * dz / (ldist - dz);
 			//float ds = (ldist / 2.) / qgl_light_parameter[index].size;
-			//qgl_FragColor.rgb = vec3(ds);
-#endif
+			float srate = abs(ds / pos.z) * 10. * soft_shadows_quality;
+			qgl_FragColor.rgb = vec3(srate);
 			
-			int samples = clamp(1, soft_shadows_samples, int(round(ds * float(soft_shadows_samples))));
+			int samples = clamp(int(round(srate * float(soft_shadows_samples))), 1, soft_shadows_samples);
 			vds = ds * bn.xyz;
 			vds2 = ds * bn2.xyz;
 			vec2 so;
 			ivec2 sotc = tc;
 	
-			noise2init(vec2(hash(ivec2(tc.x * 2 + 1, tc.y)), hash(ivec2(tc.x, (tc.y * 2 + 1)))));
-			for (int i = 1; i <= samples; ++i) {
+			noise2init(vec2(hash(ivec2(tc.x * 2. + 1., tc.y)), hash(ivec2(tc.x, (tc.y * 2. + 1.)))));
+			for (int i = 0; i < samples; ++i) {
 					so = noise2();
 #ifdef SPOT
 					//vec4 nc = texelFetch(tex_noise, sotc % noise_size, 0);
@@ -242,7 +238,7 @@ void calcLight(in int index, in vec3 n, in vec3 v) {
 #endif
 			}
 			
-			spot *= min(1, 2. * shadow / samples);
+			spot *= min(1., 2. * shadow / samples);
 			//spot *= shadow / soft_shadows_samples;
 			//spot *= shadow / soft_shadows_samples + 1;
 			
@@ -262,7 +258,7 @@ void calcLight(in int index, in vec3 n, in vec3 v) {
 		
 	}
 	
-	vec3 dist_decay = vec3(1, ldist, ldist*ldist);
+	vec3 dist_decay = vec3(1., ldist, ldist*ldist);
 	spot /= dot(qgl_light_parameter[index].decay_intensity.xyz, dist_decay);
 	
 	float NdotLs = NdotL*NdotL;
@@ -288,7 +284,7 @@ void main(void) {
 	if (z == 1.) {
 		discard;
 	}
-	pos.w = 1;
+	pos.w = 1.;
 	pos.xyz = view_dir * z;
 	vec3 v = normalize(-pos.xyz);
 
@@ -306,14 +302,16 @@ void main(void) {
 	float reflectivity = v2.b;
 	float NdotV = dot(normal, v);
 	float roughness3   = roughness*roughness*roughness;
-	bn  = normalize(cross(normal, vec3(1,0,0)) + cross(normal, vec3(0,1,0)));
+	bn  = normalize(cross(normal, vec3(1.,0.,0.)) + cross(normal, vec3(0.,1.,0.)));
 	bn2 = normalize(cross(normal, bn));
 	bn  =           cross(normal, bn2);
 	rough_diff = max(roughness, _min_rough);
 	rough_spec = max(roughness3, _min_rough);
-	float shlick = clamp(metalness + (1 - metalness) * pow(1 - NdotV, 5), 0, 1);
+	float shlick = clamp(metalness + (1. - metalness) * pow(1. - NdotV, 5.), 0., 1.);
 	flags = uint(round(v2.w));
 
+	qgl_FragColor.rgba = vec4(0);
+
 	li = vec3(0.);//qgl_AmbientLight.color.rgb * qgl_AmbientLight.intensity;
 	si = vec3(0.);
 	if (bitfieldExtract(flags, 0, 1) == 1) {
@@ -323,22 +321,22 @@ void main(void) {
 		li = vec3(1.);
 	}
 	si *= shlick;
-	li *= (1 - shlick);
-	alpha = min(1, alpha * (1 + shlick));
+	li *= (1. - shlick);
+	alpha = min(1., alpha * (1. + shlick));
 	
 	vec2 brdf = texture(tex_coeffs[0], vec2(NdotV*0.99, roughness*0.995)).rg;
 	float env_spec = shlick * brdf.x + brdf.y;
-	vec3 spec_col = mix(vec3(1), diffuse, metalness);
+	vec3 spec_col = mix(vec3(1.), diffuse, metalness);
 	vec3 env_dir = view_mat * reflect(-v, normal);
 	vec3 env_col = textureLod(tex_env, env_dir, sqrt(roughness) * max_lod).rgb * spec_col;
 	
-	vec3 res_col = max(vec3(0), li * diffuse + si * spec_col + emission);
+	vec3 res_col = max(vec3(0.), li * diffuse + si * spec_col + emission);
 	res_col = mix(res_col, env_col, env_spec * reflectivity);
 	
 	if (bitfieldExtract(flags, 1, 1) == 1) {
 		float plen = length(pos.xyz);
-		float fog = 1 - exp(-plen / fog_decay);
-		fog = clamp(fog * fog_color.a * fog_density, 0, 1);
+		float fog = 1. - exp(-plen / fog_decay);
+		fog = clamp(fog * fog_color.a * fog_density, 0., 1.);
 		res_col = mix(res_col, fog_color.rgb, fog);
 	}
 	

src/core/render/renderer.cpp

@@ -154,7 +154,7 @@ void Renderer::reloadShaders() {
 	shader_fxaa = nullptr;
 	if (tone_proc.shader_sum) delete tone_proc.shader_sum;
 	tone_proc.shader_sum = nullptr;
-	QString dir          = ":/shaders/";
+	QString dir          = "./shaders/";
 	while (it.hasNext()) {
 		it.next();
 		loadShadersMulti(shaders[it.key()], dir + it.value(), true, shader_defines.value(it.key()));
@@ -348,6 +348,7 @@ void Renderer::renderLight(int first_wr_buff, bool clear_only) {
 			prog->setUniformValue("noise_size", noise_size);
 			prog->setUniformValue("soft_shadows_enabled", view->soft_shadows);
 			prog->setUniformValue("soft_shadows_samples", view->soft_shadows_samples);
+			prog->setUniformValue("soft_shadows_quality", view->soft_shadows_quality);
 			prog->setUniformValue("tex_shadows_cone", (int)tarShadowsCone);
 			prog->setUniformValue("tex_shadows_omni", (int)tarShadowsOmni);
 			prog->setUniformValue("tex_depths_cone", (int)tarDepthsCone);

src/core/view/qglview.cpp

@@ -43,7 +43,8 @@ QGLView::QGLView(): OpenGLWindow(), renderer_(this), mouse(this) {
 	shaders_supported    = false;
 	FXAA_                = false;
 	fps_cnt              = 0;
-	soft_shadows_samples = 16;
+	soft_shadows_quality = 1.;
+	soft_shadows_samples = 32;
 	soft_shadows         = false;
 	fps_tm = fps_  = 0.;
 	fogColor_      = Qt::darkGray;

src/core/view/qglview.h

@@ -63,6 +63,7 @@ class QGLENGINE_CORE_EXPORT QGLView
 	Q_PROPERTY(QSize textureMapSize READ textureMapSize WRITE setTextureMapSize)
 	Q_PROPERTY(QSize shadowMapSize READ shadowMapSize WRITE setShadowMapSize)
 	Q_PROPERTY(int softShadowsSamples READ softShadowsSamples WRITE setSoftShadowsSamples)
+	Q_PROPERTY(float softShadowsQuality READ softShadowsQuality WRITE setSoftShadowsQuality)
 	Q_PROPERTY(bool softShadows READ softShadows WRITE setSoftShadows)
 
 public:
@@ -168,6 +169,8 @@ public:
 
 	int softShadowsSamples() const { return soft_shadows_samples; }
 	void setSoftShadowsSamples(int s) { soft_shadows_samples = s; }
+	float softShadowsQuality() const { return soft_shadows_quality; }
+	void setSoftShadowsQuality(float s) { soft_shadows_quality = s; }
 	bool softShadows() const { return soft_shadows; }
 	void setSoftShadows(bool on) { soft_shadows = on; }
 
@@ -208,7 +211,7 @@ private:
 	GLint max_anisotropic, max_texture_chanels;
 	RenderMode render_mode;
 	QSize prev_size, shadow_map_size;
-	float lineWidth_;
+	float lineWidth_, soft_shadows_quality;
 	float fps_, fps_tm, fogDensity_, fogDecay_;
 	float hoverHaloFill_, selectionHaloFill_, m_motionBlurFactor;
 	int timer, fps_cnt, sh_id_loc, soft_shadows_samples;

src/widgets/view_editor.cpp

@@ -66,6 +66,7 @@ void ViewEditor::assignQGLView(QGLView * v) {
 	ui->spinFogDensity->setValue(view->fogDensity());
 	ui->checkSoftShadows->setChecked(view->softShadows());
 	ui->spinSoftShadowSamples->setValue(view->softShadowsSamples());
+	ui->spinSoftShadowQuality->setValue(view->softShadowsQuality());
 	auto setMapSize = [](QComboBox * combo, QSize sz) {
 		for (int i = 0; i < combo->count(); ++i) {
 			if (combo->itemData(i).toSize() == sz) {
@@ -247,6 +248,12 @@ void ViewEditor::on_spinSoftShadowSamples_valueChanged(double arg1) {
 }
 
 
+void ViewEditor::on_spinSoftShadowQuality_valueChanged(double arg1) {
+	if (!view || !active) return;
+	view->setSoftShadowsQuality(arg1);
+}
+
+
 void ViewEditor::on_checkVSync_clicked(bool val) {
 	if (!view || !active) return;
 	view->setVSync(val);

src/widgets/view_editor.h

@@ -69,6 +69,7 @@ private slots:
 	void on_comboMapSizeShadow_currentIndexChanged(int index);
 	void on_checkSoftShadows_clicked(bool arg1);
 	void on_spinSoftShadowSamples_valueChanged(double arg1);
+	void on_spinSoftShadowQuality_valueChanged(double arg1);
 };
 
 #endif // VIEW_EDITOR_H

src/widgets/view_editor.ui

@@ -37,7 +37,7 @@
         <x>0</x>
         <y>0</y>
         <width>453</width>
-        <height>773</height>
+        <height>807</height>
        </rect>
       </property>
       <layout class="QVBoxLayout" name="verticalLayout">
@@ -218,30 +218,56 @@
         </layout>
        </item>
        <item>
-        <layout class="QHBoxLayout" name="horizontalLayout_2">
-         <item>
+        <layout class="QFormLayout" name="formLayout_2">
+         <property name="labelAlignment">
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+         </property>
+         <item row="0" column="0">
           <widget class="QLabel" name="label_9">
            <property name="text">
             <string>Soft shadow samples:</string>
            </property>
           </widget>
          </item>
-         <item>
+         <item row="0" column="1">
           <widget class="SpinSlider" name="spinSoftShadowSamples">
            <property name="minimum">
             <double>1.000000000000000</double>
            </property>
            <property name="maximum">
-            <double>128.000000000000000</double>
+            <double>256.000000000000000</double>
            </property>
            <property name="value">
-            <double>16.000000000000000</double>
+            <double>32.000000000000000</double>
            </property>
            <property name="decimals">
             <number>0</number>
            </property>
           </widget>
          </item>
+         <item row="1" column="0">
+          <widget class="QLabel" name="label_10">
+           <property name="text">
+            <string>Soft shadow quality:</string>
+           </property>
+          </widget>
+         </item>
+         <item row="1" column="1">
+          <widget class="SpinSlider" name="spinSoftShadowQuality">
+           <property name="minimum">
+            <double>0.100000000000000</double>
+           </property>
+           <property name="maximum">
+            <double>10.000000000000000</double>
+           </property>
+           <property name="value">
+            <double>1.000000000000000</double>
+           </property>
+           <property name="decimals">
+            <number>1</number>
+           </property>
+          </widget>
+         </item>
         </layout>
        </item>
        <item>