mirror of
https://github.com/lxsang/meta-rpi-diya.git
synced 2024-09-08 04:16:39 +02:00
166 lines
4.3 KiB
C
166 lines
4.3 KiB
C
// To compile with gcc: (tested on Ubuntu 14.04 64bit):
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// g++ sdl2_opengl.cpp -lSDL2 -lGL
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// To compile with msvc: (tested on Windows 7 64bit)
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// cl sdl2_opengl.cpp /I C:\sdl2path\include /link C:\path\SDL2.lib C:\path\SDL2main.lib /SUBSYSTEM:CONSOLE /NODEFAULTLIB:libcmtd.lib opengl32.lib
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#include <stdio.h>
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#include <stdint.h>
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#include <assert.h>
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_opengl.h>
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#include <GLES/gl.h>
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typedef int32_t i32;
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typedef uint32_t u32;
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typedef int32_t b32;
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#define WinWidth 480
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#define WinHeight 640
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int main(int ArgCount, char **Args)
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{
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u32 WindowFlags = SDL_WINDOW_OPENGL;
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SDL_Window *Window = SDL_CreateWindow("OpenGL Test", 0, 0, 0, 0, WindowFlags);
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assert(Window);
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SDL_GLContext Context = SDL_GL_CreateContext(Window);
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static GLfloat v0[] = {-1.0f, -1.0f, 1.0f};
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static GLfloat v1[] = {1.0f, -1.0f, 1.0f};
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static GLfloat v2[] = {1.0f, 1.0f, 1.0f};
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static GLfloat v3[] = {-1.0f, 1.0f, 1.0f};
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static GLfloat v4[] = {-1.0f, -1.0f, -1.0f};
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static GLfloat v5[] = {1.0f, -1.0f, -1.0f};
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static GLfloat v6[] = {1.0f, 1.0f, -1.0f};
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static GLfloat v7[] = {-1.0f, 1.0f, -1.0f};
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static GLubyte red[] = {255, 0, 0, 255};
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static GLubyte green[] = {0, 255, 0, 255};
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static GLubyte blue[] = {0, 0, 255, 255};
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static GLubyte white[] = {255, 255, 255, 255};
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static GLubyte yellow[] = {0, 255, 255, 255};
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static GLubyte black[] = {0, 0, 0, 255};
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static GLubyte orange[] = {255, 255, 0, 255};
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static GLubyte purple[] = {255, 0, 255, 0};
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SDL_SetWindowFullscreen(Window,SDL_WINDOW_FULLSCREEN);
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SDL_DisplayMode DM;
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SDL_GetCurrentDisplayMode(0, &DM);
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printf("Display size %dx%d\n", DM.w, DM.h);
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int Running = 1;
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while (Running)
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{
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SDL_Event Event;
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while (SDL_PollEvent(&Event))
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{
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if (Event.type == SDL_KEYDOWN)
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{
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switch (Event.key.keysym.sym)
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{
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case SDLK_ESCAPE:
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Running = 0;
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break;
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default:
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break;
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}
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}
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else if (Event.type == SDL_QUIT)
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{
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Running = 0;
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}
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}
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glViewport(0, 0, DM.w, DM.h);
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glClearColor(1.f, 0.f, 1.f, 0.f);
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glClear(GL_COLOR_BUFFER_BIT);
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/* Send our triangle data to the pipeline. */
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glBegin(GL_TRIANGLES);
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glColor4ubv(red);
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glVertex3fv(v0);
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glColor4ubv(green);
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glVertex3fv(v1);
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glColor4ubv(blue);
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glVertex3fv(v2);
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glColor4ubv(red);
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glVertex3fv(v0);
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glColor4ubv(blue);
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glVertex3fv(v2);
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glColor4ubv(white);
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glVertex3fv(v3);
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glColor4ubv(green);
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glVertex3fv(v1);
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glColor4ubv(black);
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glVertex3fv(v5);
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glColor4ubv(orange);
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glVertex3fv(v6);
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glColor4ubv(green);
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glVertex3fv(v1);
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glColor4ubv(orange);
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glVertex3fv(v6);
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glColor4ubv(blue);
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glVertex3fv(v2);
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glColor4ubv(black);
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glVertex3fv(v5);
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glColor4ubv(yellow);
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glVertex3fv(v4);
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glColor4ubv(purple);
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glVertex3fv(v7);
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glColor4ubv(black);
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glVertex3fv(v5);
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glColor4ubv(purple);
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glVertex3fv(v7);
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glColor4ubv(orange);
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glVertex3fv(v6);
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glColor4ubv(yellow);
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glVertex3fv(v4);
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glColor4ubv(red);
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glVertex3fv(v0);
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glColor4ubv(white);
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glVertex3fv(v3);
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glColor4ubv(yellow);
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glVertex3fv(v4);
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glColor4ubv(white);
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glVertex3fv(v3);
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glColor4ubv(purple);
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glVertex3fv(v7);
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glColor4ubv(white);
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glVertex3fv(v3);
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glColor4ubv(blue);
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glVertex3fv(v2);
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glColor4ubv(orange);
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glVertex3fv(v6);
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glColor4ubv(white);
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glVertex3fv(v3);
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glColor4ubv(orange);
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glVertex3fv(v6);
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glColor4ubv(purple);
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glVertex3fv(v7);
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glColor4ubv(green);
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glVertex3fv(v1);
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glColor4ubv(red);
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glVertex3fv(v0);
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glColor4ubv(yellow);
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glVertex3fv(v4);
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glColor4ubv(green);
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glVertex3fv(v1);
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glColor4ubv(yellow);
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glVertex3fv(v4);
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glColor4ubv(black);
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glVertex3fv(v5);
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glEnd();
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SDL_GL_SwapWindow(Window);
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}
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return 0;
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} |