We now have a triangle :D
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parent
3291732dd3
commit
3652cd82d4
2 changed files with 81 additions and 53 deletions
4
Makefile
4
Makefile
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@ -9,6 +9,8 @@ BUILDDIR = build/
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all: $(TARGET)
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$(TARGET): $(SRCDIR)main.cpp
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$(TARGET): $(SRCDIR)main.cpp $(BUILDDIR)
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$(CC) $(CFLAGS) -o $(BUILDDIR)$(TARGET) $(SRCDIR)main.cpp
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$(BUILDDIR):
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mkdir -p $(BUILDDIR)
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126
src/main.cpp
126
src/main.cpp
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@ -1,75 +1,101 @@
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//#include <iostream>
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#include <GL/glew.h>
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// Make sure Glew is loaded first
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#include <GL/gl.h>
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_opengl.h>
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//TODO: Create Error handling class
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// TODO: Create Error handling class
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int main(int argc, char ** argv){
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// Initialise SDL2
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//TODO: Check if sdl initialised
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SDL_Init(SDL_INIT_EVERYTHING);
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int main(int argc, char **argv) {
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// Initialise SDL2
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// TODO: Check if sdl initialised
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SDL_Init(SDL_INIT_EVERYTHING);
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//Make OpenGL use double buffering (Render game first then shove to output)
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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// Make OpenGL use double buffering (Render game first then shove to output)
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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//TODO: Understand what a depth buffer is
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
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// TODO: Understand what a depth buffer is
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
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//TODO: Discover if thid is necessary for linux and what values they need be
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//SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
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//SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
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//SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
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//SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
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// TODO: Discover if thid is necessary for linux and what values they need be
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// SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
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// SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
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// SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
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// SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
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// Create Window
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SDL_Window *window =
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SDL_CreateWindow("Game", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
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800, 600, SDL_WINDOW_SHOWN|SDL_WINDOW_OPENGL);
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//TODO: Test that window was created successfully
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// Create Window
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SDL_Window *window =
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SDL_CreateWindow("Game", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
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800, 600, SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL);
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// TODO: Test that window was created successfully
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//Create glContext
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SDL_GLContext glContext = SDL_GL_CreateContext(window);
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//TODO: Test that glContext was created successfully
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// Create glContext
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SDL_GLContext glContext = SDL_GL_CreateContext(window);
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// TODO: Test that glContext was created successfully
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//Initialise Glew
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if (glewInit() != GLEW_OK){
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//TODO: Throw an error lol
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}
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// Initialise Glew
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if (glewInit() != GLEW_OK) {
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// TODO: Throw an error lol
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}
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// Create event handling struct
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SDL_Event input;
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//Create event handling struct
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SDL_Event input;
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// test triangle
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float vertices[] = {-0.5f, -0.5f, 0.0f, 0.5f, -0.5f, 0.0f, 0.0f, 0.5f, 0.0f};
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// Game loop
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bool running = true;
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while(running){
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//SDL Event handling loop
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while (SDL_PollEvent(&input) > 0){
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// Handle SDL quit event
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if (input.type == SDL_QUIT){
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running = false;
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}
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//TODO: Do something with keys lol
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// Vertex Buffer Object
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unsigned int VBO;
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glGenBuffers(1, &VBO);
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};
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//Clear screen ready for next loop
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glClearColor(0.0f,0.0f,0.0f,0.0f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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// Bind the buffer and size it to the data provided
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glBindBuffer(GL_ARRAY_BUFFER, VBO);
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glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
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// TODO: Run game here lol
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// Create vertex array that will populate buffer
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unsigned int VAO;
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glCreateVertexArrays(1, &VAO);
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glEnableVertexArrayAttrib(VAO, 0);
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SDL_GL_SwapWindow(window);
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// set up vertex array atributes
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glVertexArrayAttribFormat(VAO, 0, 3, GL_FLOAT, GL_FALSE, 0);
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// sut up vbo for vao
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glVertexArrayVertexBuffer(VAO, 0, VBO, 0, sizeof(float) * 3);
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// shove vertex array into buffer
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glBindVertexArray(VAO);
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// Game loop
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bool running = true;
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while (running) {
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// SDL Event handling loop
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while (SDL_PollEvent(&input) > 0) {
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// Handle SDL quit event
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if (input.type == SDL_QUIT) {
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running = false;
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}
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// TODO: Do something with keys lol
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};
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// Clear screen ready for next loop
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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// Escaped Game loop
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// TODO: Run game here lol
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// Draw triangle
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glDrawArrays(GL_TRIANGLES, 0, 3);
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// On close also destroy window
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SDL_DestroyWindow(window);
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SDL_GL_SwapWindow(window);
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};
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// Close all leftover SDL systems
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SDL_Quit();
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// Escaped Game loop
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return 0;
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// On close also destroy window
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SDL_DestroyWindow(window);
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// Close all leftover SDL systems
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SDL_Quit();
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return 0;
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}
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