Color changing shaders!

src/ShaderProgram.hpp

@@ -77,6 +77,8 @@ public:
 		glUseProgram(program_id);
 	}
 
+	unsigned int vertexShader_id, fragmentShader_id, program_id;
+
 private:
 	void LoadFile(std::string path, char** source)
 	{
@@ -90,6 +92,4 @@ private:
 		memcpy_s(*source, s, shader.c_str(), s);
 		(*source)[s] = '\0';
 	}
-
-	unsigned int vertexShader_id, fragmentShader_id, program_id;
 };

src/main.cpp

@@ -76,10 +76,14 @@ int main(int argc, char** argv)
 	{
 		glfwPollEvents();
 
+		float time = glfwGetTime();
+		int timeUniformLocation = glGetUniformLocation(program.program_id, "t");
+
 		glClearColor(0.4f, 0.1f, 0.5f, 1.0f);
 		glClear(GL_COLOR_BUFFER_BIT);
 
 		program.Use();
+		glUniform1f(timeUniformLocation, time);
 		q.Draw();
 
 		glfwSwapBuffers(window);

src/primitives/Quad.hpp

@@ -37,7 +37,6 @@ public:
 	{
 		glBindVertexArray(VAO);
 		glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, indices);
-		glBindVertexArray(0);
 	}
 
 private:

src/primitives/Triangle.hpp

@@ -28,7 +28,6 @@ public:
 	{
 		glBindVertexArray(VAO);
 		glDrawArrays(GL_TRIANGLES, 0, 3);
-		glBindVertexArray(0);
 	}
 
 private:

src/shaders/triangle.frag

@@ -1,8 +1,11 @@
 #version 460 core
 out vec4 FragColor;
 
+in vec4 vertexColor;
+
+uniform float t;
 
 void main()
 {
-	FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);
+	FragColor = vertexColor * vec4((sin(t) + 1.f) / 2, (cos(t) + 1.f) / 2, (-sin(t) + 1.f), 1.f);
 }

src/shaders/triangle.vert

@@ -1,7 +1,10 @@
 #version 460 core
 layout (location = 0) in vec3 aPos;
 
+out vec4 vertexColor;
+
 void main()
 {
 	gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
+	vertexColor = vec4(aPos.x + 0.5, aPos.y + 0.5, 0.5, 1.0);
 }