started with coordinate system section
This commit is contained in:
parent
de5a6d1bfd
commit
350aef4871
|
|
@ -11,7 +11,7 @@
|
|||
#include "util/stb_image.h"
|
||||
|
||||
// Continue: https://learnopengl.com/Getting-started/Coordinate-Systems
|
||||
// Chapter: not started
|
||||
// Chapter: More Cubes!
|
||||
//
|
||||
// TODO: look at project->properties->VC++ Directories-> change everything to the Environment var
|
||||
// For the "real" Nebulix Engine setup everything so it can be compiled/used with VSCode/CLion and not just VS (so basically having an "external" folder which has open gl, GLAD, etc. in it or something like this)
|
||||
|
|
@ -27,6 +27,8 @@
|
|||
|
||||
#define WINDOW_WIDTH 800
|
||||
#define WINDOW_HEIGHT 600
|
||||
typedef glm::mat4 mat4;
|
||||
typedef glm::vec3 vec3;
|
||||
|
||||
|
||||
void OnWindowResize(GLFWwindow* window, int width, int height)
|
||||
|
|
@ -68,16 +70,69 @@ int main()
|
|||
OnWindowResize(window, WINDOW_WIDTH, WINDOW_HEIGHT);
|
||||
glfwSetFramebufferSizeCallback(window, OnWindowResize);
|
||||
|
||||
GLfloat vertices[] = { // world coordinate, colour, uv coordinates
|
||||
0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, // top right
|
||||
0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, // bottom right
|
||||
-0.5f, -0.5f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, // bottom left
|
||||
-0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f // top left
|
||||
float vertices[] = { // object coordinates, uv-coordinates
|
||||
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f,
|
||||
0.5f, -0.5f, -0.5f, 1.0f, 0.0f,
|
||||
0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
|
||||
0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
|
||||
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f,
|
||||
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f,
|
||||
|
||||
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
|
||||
0.5f, -0.5f, 0.5f, 1.0f, 0.0f,
|
||||
0.5f, 0.5f, 0.5f, 1.0f, 1.0f,
|
||||
0.5f, 0.5f, 0.5f, 1.0f, 1.0f,
|
||||
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f,
|
||||
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
|
||||
|
||||
-0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
|
||||
-0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
|
||||
-0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
|
||||
-0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
|
||||
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
|
||||
-0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
|
||||
|
||||
0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
|
||||
0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
|
||||
0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
|
||||
0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
|
||||
0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
|
||||
0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
|
||||
|
||||
-0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
|
||||
0.5f, -0.5f, -0.5f, 1.0f, 1.0f,
|
||||
0.5f, -0.5f, 0.5f, 1.0f, 0.0f,
|
||||
0.5f, -0.5f, 0.5f, 1.0f, 0.0f,
|
||||
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f,
|
||||
-0.5f, -0.5f, -0.5f, 0.0f, 1.0f,
|
||||
|
||||
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f,
|
||||
0.5f, 0.5f, -0.5f, 1.0f, 1.0f,
|
||||
0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
|
||||
0.5f, 0.5f, 0.5f, 1.0f, 0.0f,
|
||||
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f,
|
||||
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f
|
||||
};
|
||||
|
||||
GLuint faces[]{
|
||||
0, 1, 3,
|
||||
1, 2, 3
|
||||
};
|
||||
1, 2, 3,
|
||||
|
||||
4, 5, 6,
|
||||
5, 6, 7,
|
||||
|
||||
8, 9, 10,
|
||||
9, 10, 11,
|
||||
|
||||
12, 13, 14,
|
||||
13, 14, 15,
|
||||
|
||||
16, 17, 18,
|
||||
17, 18, 19,
|
||||
|
||||
20, 21, 22,
|
||||
21, 22, 23
|
||||
}; // 23
|
||||
|
||||
// VBO == all verticies; EBO == connection of vertices (faces) and is optional although it is a bit more efficient than using VBOs;
|
||||
// VAO == collection of VBOs/EBOs used for rendering
|
||||
|
|
@ -95,13 +150,10 @@ int main()
|
|||
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(faces), faces, GL_STATIC_DRAW);
|
||||
|
||||
// position attribute
|
||||
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)0);
|
||||
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)0);
|
||||
glEnableVertexAttribArray(0);
|
||||
// colour (or more general, the second vertex Attribute)
|
||||
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(3 * sizeof(float)));
|
||||
glEnableVertexAttribArray(1);
|
||||
// uv-coordinates (or more general the third vertex attribute)
|
||||
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(6 * sizeof(float)));
|
||||
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(3 * sizeof(float)));
|
||||
glEnableVertexAttribArray(2);
|
||||
// I could unbind the VAO, but this is usually not needed because when creating a new VAO we need to bind that to change it anyway, so there shouldn't be a problem
|
||||
|
||||
|
|
@ -156,27 +208,32 @@ int main()
|
|||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); // use nearest neighbour when zooming out
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); // use bilinear when zooming in
|
||||
|
||||
mat4 modelMatrix = mat4(1.0f);
|
||||
modelMatrix = glm::rotate(modelMatrix, glm::radians(-55.0f), vec3(1.0f, 0, 0));
|
||||
mat4 viewMatrix = mat4(1.0f);
|
||||
viewMatrix = glm::translate(viewMatrix, vec3(0, 0, -3.0f));
|
||||
mat4 projectionMatrix = glm::perspective(glm::radians(45.0f), 800.0f / 600.0f, 0.1f, 100.0f);
|
||||
|
||||
glEnable(GL_DEPTH_TEST);
|
||||
float timeLastFrame = glfwGetTime();
|
||||
// main loop
|
||||
while(!glfwWindowShouldClose(window))
|
||||
{
|
||||
glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
|
||||
glClear(GL_COLOR_BUFFER_BIT);
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
|
||||
ProcessInput(window);
|
||||
|
||||
float time = glfwGetTime();
|
||||
|
||||
glm::mat4 transform = glm::mat4(1.0f);
|
||||
transform = glm::rotate(transform, (float)glfwGetTime(), glm::vec3(0, 0, 1.0f));
|
||||
transform = glm::translate(transform, glm::vec3(glm::sin((float)glfwGetTime()), 0, 0));
|
||||
//transform = glm::scale(transform, glm::vec3(glm::sin((float)glfwGetTime())));
|
||||
modelMatrix = glm::rotate(modelMatrix, time * (time - timeLastFrame) + 0.001f * glm::radians(50.0f), glm::vec3(0.5f, 1.0f, 0.0f));
|
||||
|
||||
shader->Use();
|
||||
shader->SetInt("ourTexture1", 0);
|
||||
shader->SetInt("ourTexture2", 1);
|
||||
shader->SetMatrix("transform", transform);
|
||||
//float time = glfwGetTime();
|
||||
//float greenValue = (sin(time) / 2.0f) + 0.5f;
|
||||
//shader->setFloat("ourColour", 0.0f, greenValue, 0.0f, 0.0f);
|
||||
shader->SetMatrix("modelMatrix", modelMatrix);
|
||||
shader->SetMatrix("viewMatrix", viewMatrix);
|
||||
shader->SetMatrix("projectionMatrix", projectionMatrix);
|
||||
|
||||
glActiveTexture(GL_TEXTURE0); // before binding texture, activate correct textre Unit (some drivers might show nothing if this is omitted)
|
||||
glBindTexture(GL_TEXTURE_2D, textureID_container);
|
||||
|
|
@ -184,10 +241,12 @@ int main()
|
|||
glBindTexture(GL_TEXTURE_2D, textureID_face);
|
||||
|
||||
glBindVertexArray(vertexArrayObject);
|
||||
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
|
||||
//glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0); // for EBOs
|
||||
glDrawArrays(GL_TRIANGLES, 0, 36); // for VAOs
|
||||
|
||||
glfwSwapBuffers(window);
|
||||
glfwPollEvents();
|
||||
timeLastFrame = glfwGetTime();
|
||||
}
|
||||
|
||||
// optional, as we are at the end of the program.
|
||||
|
|
|
|||
|
|
@ -1,16 +1,22 @@
|
|||
#version 330 core
|
||||
layout (location = 0) in vec3 aPos;
|
||||
layout (location = 1) in vec3 aColour;
|
||||
//layout (location = 1) in vec3 aColour;
|
||||
layout (location = 2) in vec2 aTexCoord;
|
||||
|
||||
out vec3 ourColour;
|
||||
out vec2 texCoord;
|
||||
|
||||
uniform mat4 transform;
|
||||
uniform mat4 modelMatrix;
|
||||
uniform mat4 viewMatrix;
|
||||
uniform mat4 projectionMatrix;
|
||||
|
||||
//uniform mat4 transform;
|
||||
|
||||
void main()
|
||||
{
|
||||
gl_Position = transform * vec4(aPos, 1.0);
|
||||
ourColour = aColour;
|
||||
// note that we read the multiplication from right to left
|
||||
gl_Position = projectionMatrix * viewMatrix * modelMatrix * vec4(aPos, 1.0);
|
||||
//gl_Position = transform * vec4(aPos, 1.0);
|
||||
ourColour = vec3(1.0);
|
||||
texCoord = aTexCoord;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user