git-svn-id: svn://db.shs.com.ru/libs@72 a8b55f48-bf90-11e4-a774-851b48703e85

qglview/renderer_deferred_shading.cpp

@@ -40,6 +40,7 @@ fbo_g(5, true, GL_RGBA16F), fbo_out(3, false, GL_RGBA16F), fbo_hsmall(1, false,
 	for (int i = 0; i < shaders.size(); ++i)
 		*(shaders[i].second) = 0;
 	lights_per_pass = 8;
+	tnoise = 0;
 	exposure_ = 1.;
 	df = new QWidget();
 	df->setLayout(new QBoxLayout(QBoxLayout::TopToBottom));
@@ -231,7 +232,21 @@ void RendererDeferredShading::renderScene() {
 		//qDebug() << wi << ri << lms;
 		/*wi = lri;
 		ri = 1 - lms;*/
-
+		glEnable(GL_TEXTURE_1D);
+		if (tnoise == 0) {
+			glGenTextures(1, &tnoise);
+			glBindTexture(GL_TEXTURE_1D, tnoise);
+			QByteArray ba;
+			for (int i = 0; i < 32*3; ++i)
+				ba.push_back(char(random() % 256));
+			//qDebug() << ba;
+			glTexImage1D(GL_TEXTURE_1D, 0, GL_RGB8, 32, 0, GL_RGB, GL_UNSIGNED_BYTE, ba.constData());
+			glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+			glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+			glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
+			glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+			glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+		}
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(lri));
 		glActiveTextureChannel(1);
 		glBindTexture(GL_TEXTURE_2D, fbo_out.colorTexture(2));
@@ -239,16 +254,20 @@ void RendererDeferredShading::renderScene() {
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 		glActiveTextureChannel(2);
 		glBindTexture(GL_TEXTURE_2D, fbo_g.colorTexture(1));
+		glActiveTextureChannel(3);
+		glBindTexture(GL_TEXTURE_1D, tnoise);
 		shader_ssao_merge->bind();
 		shader_ssao_merge->setUniformValue("qgl_ModelViewProjectionMatrix", QMatrix4x4());
 		shader_ssao_merge->setUniformValue("z_far", GLfloat(view.depthEnd()));
 		shader_ssao_merge->setUniformValue("z_near", GLfloat(view.depthStart()));
 		shader_ssao_merge->setUniformValue("mat_proj", mproj);
+		shader_ssao_merge->setUniformValue("n0", 3);
 		shader_ssao_merge->setUniformValue("t0", 0);
 		shader_ssao_merge->setUniformValue("ts", 1);
 		shader_ssao_merge->setUniformValue("tg1", 2);
 		fbo_out.setWriteBuffer(lwi);
 		glDrawQuad(shader_ssao_merge, corner_dirs);
+		glDisable(GL_TEXTURE_1D);
 		wi = lri;
 		ri = lwi;
 		//piSwap<int>(wi, ri);

qglview/renderer_deferred_shading.h

@@ -49,6 +49,7 @@ private:
 	QGLShaderProgram * shader_bloom_0, * shader_bloom_1, * shader_motion_blur, * shader_fbo_add;
 	QGLShaderProgram * shader_shadow, * shader_ssr, * shader_ssr_blur, * shader_ssr_merge;
 	QGLShaderProgram * shader_ssao_blur, * shader_ssao_merge;
+	GLuint tnoise;
 	QVector<ShaderPair> shaders;
 
 	QMatrix4x4 prev_view, prev_proj;

qglview/shaders/ssao_blur.frag

@@ -4,11 +4,15 @@ uniform sampler2D t0, ts, tg1;
 uniform float radius = 2;
 uniform vec2 dt;
 
+vec4 st;
+
 vec4 getTexel(vec2 tc, vec4 ptc, float mul) {
-	vec4 tv = texture(t0, tc);
+	vec4 tv = texture(t0, tc), ts = texture(ts, tc);
-	if (radius == 1)
+	if (radius == 1) {
 		tv = vec4(tv.w);
-	return vec4(min(ptc.r, tv.r), max(ptc.g, tv.g), ptc.b + tv.b * mul, 0);
+		ts = tv;
+	}
+	return vec4(min(ptc.r, ts.r), max(ptc.g, ts.g), ptc.b + /*mix(tv.b, st.b, clamp(abs(st.w - tv.w), 0, 1))*/tv.b * mul, 0);
 }
 
 void main(void) {
@@ -19,6 +23,7 @@ void main(void) {
 	vec4 scol = texture(t0, tc);
 	if (radius == 1)
 		scol = vec4(scol.w);
+	st = scol;
 	scol.b *= 3.;
 	scol = getTexel(tc + dt * vec2(  o,  0 ), scol, 2);
 	scol = getTexel(tc + dt * vec2(  0,  o ), scol, 2);

qglview/shaders/ssao_merge.frag

@@ -1,6 +1,7 @@
 #version 150
 
 uniform sampler2D t0, ts, tg1;
+uniform sampler1D n0;
 uniform float z_near, z_far;
 uniform mat4 mat_proj;
 
@@ -9,7 +10,7 @@ in vec3 view_dir;
 void main(void) {
 	ivec2 tc = ivec2(gl_FragCoord.xy);
 	vec4 v0 = texelFetch(t0, tc, 0), vs = texelFetch(ts, tc, 0), vg1 = texelFetch(tg1, tc, 0);
-	/*vec3 n = vec3(-vg1.xy, vg1.z);
+	vec3 n = vec3(vg1.xyz);
 	vec3 bn = cross(n, vec3(0, 0, 1));
 	vec3 bn2 = cross(n, bn);
 	vec4 pos;
@@ -17,7 +18,8 @@ void main(void) {
 	pos.xyz = view_dir * vs.w;
 	vec4 spos = pos, tpos, tv0;
 	vec2 tsp;
-	float l = 20 * 0.5;
+	float sclz = dot(vec3(0,0,1), n);
+	/*float l = 20 * 0.5;
 	pos.xyz += bn2 * l;
 	for (int i = 0; i < 16; ++i) {
 		tpos = mat_proj * pos;
@@ -26,10 +28,26 @@ void main(void) {
 		l *= 0.5;
 		pos.xyz += bn2 * (step(pos.z, tv0.w) * 2. - 1.) * l;
 	}*/
+	/*vec3 rn;
+	float ss = 0.;
+	for (int i = 0; i < 32; ++i) {
+		rn = texelFetch(n0, i, 0).rgb * 2 - 1;
+		rn *= step(0., dot(n, rn)) * 2 - 1.;
+		//rn /= 10;
+		rn /= vs.w;
+		spos = pos + vec4(rn, 0);
+		tpos = mat_proj * spos;
+		tsp = -(tpos.xy / tpos.w) / 2. + 0.5;
+		tv0 = texture(ts, tsp);
+		//spos.z = tv0.w;
+		ss += step(-0.1, tv0.w-vs.w);
+		//ss += step(vs.w, tv0.w);
+	}
+	ss /= 32;*/
 	float minz = v0.r, maxz = v0.g, blurz = v0.b, curz = v0.w, avgz = (minz+maxz)/2;
 	float dz = maxz - minz;
-	qgl_FragData[0].rgb = vec3(max(-(blurz - curz) / maxz,0.)* (curz-minz) / dz * 10);
+	//qgl_FragData[0].rgb = vec3(max(-(blurz - curz) / maxz,0.)* (curz-minz) / dz * 10);
-	//qgl_FragData[0].rgb = vec3(v0.b / 10);
+	qgl_FragData[0].rgb = vec3(blurz/10);
 	//qgl_FragData[0].rgb = vec3(length(pos.z - spos.z)/15);
 	//qgl_FragData[0].rgb = vec3(abs(v0.w/1));
 }