97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
#include <SDL.h>
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#include <oglplus/gl.hpp>
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#include <oglplus/all.hpp>
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using namespace oglplus;
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#define WIDTH 800
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#define HEIGHT 600
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static void init();
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static void display(SDL_Window * window);
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int main(int argc, char * argv[])
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{
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if (SDL_Init(SDL_INIT_VIDEO))
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{
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printf("Failed to initialize SDL!\n");
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return 1;
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}
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atexit(SDL_Quit);
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SDL_Window * window = SDL_CreateWindow("OGLplus example",
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SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED,
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WIDTH,
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HEIGHT,
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SDL_WINDOW_OPENGL);
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if (!window)
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{
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printf("Failed to create window!\n");
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SDL_Quit();
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return 1;
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}
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SDL_GLContext gl_context = SDL_GL_CreateContext(window);
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init();
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display(window);
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SDL_Event event;
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while (SDL_WaitEvent(&event))
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{
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if (event.type == SDL_QUIT)
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break;
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else if (event.type == SDL_KEYDOWN)
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{
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if (event.key.keysym.sym == SDLK_ESCAPE)
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break;
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if (event.key.keysym.sym == SDLK_RETURN)
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display(window);
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}
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}
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return 0;
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}
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static void init()
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{
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VertexShader vs;
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FragmentShader fs;
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Program program;
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VertexArray cube;
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Buffer verts;
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vs.Source("#version 330\n"
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"uniform mat4 projection;\n"
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"uniform mat4 modelview;\n"
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"in vec4 position;\n"
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"in vec3 normal;\n"
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"in vec2 texture;\n"
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"out vec3 normal_i;\n"
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"out vec2 texture_i;\n"
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"void main(void)\n"
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"{\n"
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" normal_i = normal;\n"
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" texture_i = texture;\n"
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" gl_Position = projection * modelview * position\n"
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"}");
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vs.Compile();
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fs.Source("#version 330\n"
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"in vec3 normal_i;\n"
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"in vec2 texture_i;\n"
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"out vec4 frag_color;\n"
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"void main(void)\n"
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"{\n"
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" frag_color = vec4(texture_i, 1.0, 1.0);\n"
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"}");
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fs.Compile();
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}
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static void display(SDL_Window * window)
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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SDL_GL_SwapWindow(window);
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}
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