cool cellular shader things

App.h

@@ -40,8 +40,7 @@ class App {
 	shader mshader;
 	shader clear_shader;
 	shader texture_shader;
-	shader blur_shader1;
+	shader blur_shader;
-	shader blur_shader2;
 	fbo fbo1;
 	fbo fbo2;
 
@@ -59,8 +58,7 @@ public:
 		mshader("resources/myTeaShader.vert", "resources/myTeaShader.frag"),
 		clear_shader("resources/myClearShader.vert", "resources/myClearShader.frag"),
 		texture_shader("resources/myTextureShader.vert", "resources/myTextureShader.frag"),
-		blur_shader1("resources/myHBlurShader.vert", "resources/myHBlurShader.frag"),
+		blur_shader("resources/myHBlurShader.vert", "resources/myHBlurShader.frag"),
-		blur_shader2("resources/myVBlurShader.vert", "resources/myVBlurShader.frag"),
 		fbo1(width, height),
 		fbo2(width, height),
 		lines(),
@@ -96,23 +94,35 @@ public:
 	void draw() {
 		fbo & read_fbo = (counter % 2) ? fbo1 : fbo2;
 		fbo & draw_fbo = (counter % 2) ? fbo2 : fbo1;
-		shader & blur_shader = (counter % 2) ? blur_shader1 : blur_shader2;
 
 		glClearColor(0.0, 0.0, 0.0, 0.0);
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
 
 		draw_fbo.begin();
 		glClearColor(0.0, 0.0, 0.0, 0.0);
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 		blur_shader.begin();
-			texture(read_fbo);
+			blur_shader.set_uniform("offset", (float) cos(counter) / width, (float) sin(counter) / height);
+			if(true){
+				blur_shader.set_uniform("fade", 0.75f);
+				blur_shader.set_uniform("inter", 0.55f);
+			} else {
+				blur_shader.set_uniform("fade", 0.96f);
+				blur_shader.set_uniform("inter", 0.9f);
+			}
+			texture(blur_shader, read_fbo);
 		mshader.begin();
+			glBlendFunc(GL_ONE, GL_ONE);
 			scene();
 		draw_fbo.end();
 
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 		texture_shader.begin();
-			texture(draw_fbo);
+			texture(texture_shader, draw_fbo);
 
+		//if(counter % 4 == 0)
 		//	save_screen();
 	}
 
@@ -125,9 +135,8 @@ public:
 		glDisableClientState(GL_VERTEX_ARRAY);
 	}
 
-	void texture(fbo const & read_fbo) {
+	void texture(shader const & tex_shader, fbo const & read_fbo) {
-		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+		tex_shader.set_texture("tex", GL_TEXTURE_2D, read_fbo.texture_id, 0);
-		texture_shader.set_texture("tex", GL_TEXTURE_2D, read_fbo.texture_id, 0);
 
 		glEnableClientState(GL_VERTEX_ARRAY);
 		glEnableClientState(GL_TEXTURE_COORD_ARRAY);
@@ -139,19 +148,13 @@ public:
 	}
 
 	void scene() {
-		glBlendFunc(GL_ONE, GL_ONE);
-
 		mshader.set_uniform("steps", counter/10);
-		glRotatef(0.05, std::sin(counter/13370.0), 1.0, 0.0);
+		glRotatef(0.09, std::sin(counter/13370.0), 1.0, 0.0);
-
-		const unsigned int part = 8;
 
 		glEnableClientState(GL_VERTEX_ARRAY);
 		glVertexPointer(3, GL_FLOAT, 0, &lines[0]);
-		glPointSize(3.0);
-		glDrawArrays(GL_POINTS, 0, number_of_vertices/part);
 		glPointSize(1.0);
-		glDrawArrays(GL_POINTS, number_of_vertices/part, (part-1)*number_of_vertices/part);
+		glDrawArrays(GL_POINTS, 0, number_of_vertices);
 		glDisableClientState(GL_VERTEX_ARRAY);
 	}
 

main.cpp

@@ -11,7 +11,7 @@
 
 
 App* app_ptr = 0;
-unsigned int const frames_per_second = 60.0;
+unsigned int const frames_per_second = 200.0;
 
 
 typedef std::chrono::high_resolution_clock clock_type;
@@ -62,7 +62,6 @@ int main(int argc, char** argv) {
 			//glFlush();
 
 			++frame_count;
-			if(frame_count == 7400) exit(0);
 
 			previous_timepoint = current_timepoint-(difference%time_step);
 		} else {

resources/myHBlurShader.frag

@@ -1,12 +1,20 @@
 uniform sampler2D tex;
+uniform vec2 offset;
+uniform float inter;
+uniform float fade;
 
-vec2 offset = vec2(0.0, 1.0/600.0);
+//vec2 offset = vec2(0.0, 1.0/600.0);
+//float inter = 0.2;
 
 void main( void ) {
 	gl_FragColor = texture2D(tex, gl_TexCoord[0].st + offset);
 	gl_FragColor += texture2D(tex, gl_TexCoord[0].st - offset);
-	gl_FragColor = normalize(gl_FragColor) + 0.5*gl_FragColor;
+	gl_FragColor = inter*normalize(gl_FragColor) + (1.0 - inter)*gl_FragColor;
-	gl_FragColor *= 0.56;
+	gl_FragColor *= fade;
 	//gl_FragColor = sin(gl_FragColor*3.0);
+
+	gl_FragColor -= 0.033*texture2D(tex, gl_TexCoord[0].st + 30.0*offset);
+	gl_FragColor -= 0.033*texture2D(tex, gl_TexCoord[0].st - 30.0*offset);
+
 	gl_FragColor.a = 1.0;
 }

resources/myTextureShader.frag

@@ -3,6 +3,7 @@ uniform sampler2D tex;
 
 void main( void ) {
 	gl_FragColor = texture2D(tex, gl_TexCoord[0].st);
-	//gl_FragColor = sin(gl_FragColor*3.0);
+	//gl_FragColor -= texture2D(tex, gl_TexCoord[0].st + vec2(0.0, 0.005));
+	//gl_FragColor = gl_FragColor*2.0 + 0.5;
 	gl_FragColor.a = 1.0;
 }

resources/myVBlurShader.frag

@@ -1,12 +1,13 @@
 uniform sampler2D tex;
 
 vec2 offset = vec2(1.0/800.0, 0.0);
+float inter = 0.2;
 
 void main( void ) {
 	gl_FragColor = texture2D(tex, gl_TexCoord[0].st + offset);
 	gl_FragColor += texture2D(tex, gl_TexCoord[0].st - offset);
-	gl_FragColor = normalize(gl_FragColor) + 0.5*gl_FragColor;
+	gl_FragColor = inter*normalize(gl_FragColor) + (1.0 - inter)*gl_FragColor;
-	gl_FragColor *= 0.56;
+	gl_FragColor *= 0.57;
 	//gl_FragColor = sin(gl_FragColor*3.0);
 	gl_FragColor.a = 1.0;
 }

shader.h

@@ -60,39 +60,39 @@ public:
 		glUseProgram(0);
 	}
 
-	void set_uniform(char const* name, float x) {
+	void set_uniform(char const* name, float x) const {
 		glUniform1f(glGetUniformLocation(program, name), x);
 	}
 
-	void set_uniform(char const* name, float x, float y) {
+	void set_uniform(char const* name, float x, float y) const {
 		glUniform2f(glGetUniformLocation(program, name), x, y);
 	}
 
-	void set_uniform(char const* name, float x, float y, float z) {
+	void set_uniform(char const* name, float x, float y, float z) const {
 		glUniform3f(glGetUniformLocation(program, name), x, y, z);
 	}
 
-	void set_uniform(char const* name, float x, float y, float z, float w) {
+	void set_uniform(char const* name, float x, float y, float z, float w) const {
 		glUniform4f(glGetUniformLocation(program, name), x, y, z, w);
 	}
 
-	void set_uniform(char const* name, int x) {
+	void set_uniform(char const* name, int x) const {
 		glUniform1i(glGetUniformLocation(program, name), x);
 	}
 
-	void set_uniform(char const* name, int x, int y) {
+	void set_uniform(char const* name, int x, int y) const {
 		glUniform2i(glGetUniformLocation(program, name), x, y);
 	}
 
-	void set_uniform(char const* name, int x, int y, int z) {
+	void set_uniform(char const* name, int x, int y, int z) const {
 		glUniform3i(glGetUniformLocation(program, name), x, y, z);
 	}
 
-	void set_uniform(char const* name, int x, int y, int z, int w) {
+	void set_uniform(char const* name, int x, int y, int z, int w) const {
 		glUniform4i(glGetUniformLocation(program, name), x, y, z, w);
 	}
 
-	void set_texture(const char* name, GLenum target, GLuint tex, int textureLocation) {
+	void set_texture(const char* name, GLenum target, GLuint tex, int textureLocation) const {
 		glActiveTexture(GL_TEXTURE0 + textureLocation);
 		glBindTexture(target, tex);
 		set_uniform(name, textureLocation);