From 31066e789acad4c61b4fc68a6cdf9249b9a44299 Mon Sep 17 00:00:00 2001
From: visil <workregor@mail.ru>
Date: Mon, 9 Oct 2023 11:15:33 +0300
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---
 lesson01/a.out    | Bin 57456 -> 57360 bytes
 lesson01/main.cpp |  43 ++++++++++++++++++++++++++++---------------
 2 files changed, 28 insertions(+), 15 deletions(-)

(limited to 'lesson01')

diff --git a/lesson01/a.out b/lesson01/a.out
index 885c317..7fca4c0 100755
Binary files a/lesson01/a.out and b/lesson01/a.out differ
diff --git a/lesson01/main.cpp b/lesson01/main.cpp
index 647674a..1c3804d 100644
--- a/lesson01/main.cpp
+++ b/lesson01/main.cpp
@@ -5,19 +5,23 @@
 
 const char *vertexShaderSource = "#version 330 core\n"
     "layout (location = 0) in vec3 aPos;\n"
+    "layout (location = 1) in vec3 aColor;\n"
+    "\n"
+    "out vec3 ourColor;\n"
+    "\n"
     "void main()\n"
     "{\n"
-    "   gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);\n"
+    "   gl_Position = vec4(aPos, 1.0);\n"
+    "   ourColor = aColor;"
     "}\0";
 
 const char *fragmentShaderSource = "#version 330 core\n"
     "out vec4 FragColor;\n"
-    "\n"
-    "uniform vec4 ourColor;"
+    "in vec3 ourColor;\n"
     "\n"
     "void main()\n"
     "{\n"
-    "    FragColor = ourColor;\n"
+    "    FragColor = vec4(ourColor, 1.0);\n"
     "}\0";
 
 void framebuffer_size_callback(GLFWwindow* window, int width, int height);
@@ -54,14 +58,13 @@ int main()
 	
 	// вершины фигуры
 	float vertices[] = {
-    		-0.5f, -0.5f, 0.0f,
-    		 0.5f, -0.5f, 0.0f,
-    		 0.5f,  0.5f, 0.0f,
-		-0.5f,  0.5f, 0.0f
+		// координаты 	      // цвета
+    		-0.5f, -0.5f, 0.0f,   1.0f, 0.0f, 0.0f,
+    		 0.5f, -0.5f, 0.0f,   0.0f, 1.0f, 0.0f,
+    		 0.0f,  0.5f, 0.0f,   0.0f, 0.0f, 1.0f,
 	};  
 	unsigned int indices[] = {
 		0, 1, 2, // первый треугольник
-		2, 3, 0  // второй треугольник
 	};
 
 
@@ -139,10 +142,20 @@ int main()
 				3, 
 				GL_FLOAT, 
 				GL_FALSE, 
-				3 * sizeof(float), 
+				6 * sizeof(float), 
 				(void*)0
 			     );
 	glEnableVertexAttribArray(0);
+	glVertexAttribPointer(
+				1, 
+				3, 
+				GL_FLOAT, 
+				GL_FALSE, 
+				6 * sizeof(float), 
+				(void*)(3* sizeof(float))
+			     );
+	glEnableVertexAttribArray(1);
+
 
 	/* glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); */
 	while (!glfwWindowShouldClose(window)) {
@@ -152,13 +165,13 @@ int main()
 		glClear(GL_COLOR_BUFFER_BIT);
 
 		// задаём uniform fragment-шейдера
-		float timeValue = glfwGetTime();
-		float greenValue = (sin(timeValue) / 2.0f) + 0.5f;
-		int vertexColorLocation = glGetUniformLocation(shaderProgram,
-							       "ourColor");
+		/* float timeValue = glfwGetTime(); */
+		/* float greenValue = (sin(timeValue) / 2.0f) + 0.5f; */
+		/* int vertexColorLocation = glGetUniformLocation(shaderProgram, */
+		/* 					       "ourColor"); */
 		
 		glUseProgram(shaderProgram);
-		glUniform4f(vertexColorLocation, 0.0f, greenValue, 0.0f, 1.0f);
+		/* glUniform4f(vertexColorLocation, 0.0f, greenValue, 0.0f, 1.0f); */
 
 		glBindVertexArray(VAO);
 		/* glDrawArrays(GL_TRIANGLES, 0, 3); */
-- 
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