127 lines
2.9 KiB
C
127 lines
2.9 KiB
C
#include "GL/gl.h"
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#include "GL/glu.h"
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#include "GL/glkos.h"
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void InitGL(int Width, int Height)
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{
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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glClearDepth(1.0);
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glDepthFunc(GL_LEQUAL);
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glEnable(GL_DEPTH_TEST);
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glShadeModel(GL_SMOOTH);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(45.0f,(GLfloat)Width/(GLfloat)Height,0.1f,100.0f);
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glMatrixMode(GL_MODELVIEW);
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/* We cut out a square in the middle of the viewport to render to */
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glEnable(GL_SCISSOR_TEST);
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glScissor(160, 120, 320, 240);
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}
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/* The function called when our window is resized (which shouldn't happen, because we're fullscreen) */
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void ReSizeGLScene(int Width, int Height)
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{
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if (Height == 0)
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Height = 1;
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glViewport(0, 0, Width, Height);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(45.0f,(GLfloat)Width/(GLfloat)Height,0.1f,100.0f);
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glMatrixMode(GL_MODELVIEW);
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}
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/* The main drawing function. */
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void DrawGLScene()
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glLoadIdentity();
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glTranslatef(-3.0f, 1.5f, -10.0f);
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glBegin(GL_TRIANGLES);
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glVertex3f( 0.0f, 1.0f, 0.0f);
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glVertex3f( 1.0f,-1.0f, 0.0f);
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glVertex3f(-1.0f,-1.0f, 0.0f);
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glEnd();
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glTranslatef(3.0f, 0.0f, 0.0f);
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glBegin(GL_QUADS);
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glVertex3f(-1.0f, 1.0f, 0.0f);
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glVertex3f( 1.0f, 1.0f, 0.0f);
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glVertex3f( 1.0f,-1.0f, 0.0f);
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glVertex3f(-1.0f,-1.0f, 0.0f);
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glEnd();
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glTranslatef(3.0f, 0.0f, 0.0f);
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glBegin(GL_POLYGON);
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glVertex3f(-0.0f, 1.0f, 0.0f);
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glVertex3f(-0.75f, 0.75f, 0.0f);
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glVertex3f(-1.0f, 0.0f, 0.0f);
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glVertex3f(-0.75f,-0.75f, 0.0f);
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glVertex3f(-0.0f,-1.0f, 0.0f);
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glVertex3f( 0.75f,-0.75f, 0.0f);
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glVertex3f( 1.0f, 0.0f, 0.0f);
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glVertex3f( 0.75f, 0.75f, 0.0f);
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glEnd();
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glTranslatef(-6.0f, -3.0f, 0.0f);
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glBegin(GL_POLYGON);
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glVertex3f( 0.0f, 1.0f, 0.0f);
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glVertex3f( 1.0f,-1.0f, 0.0f);
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glVertex3f(-1.0f,-1.0f, 0.0f);
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glEnd();
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glTranslatef(3.0f, 0.0f, 0.0f);
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glBegin(GL_POLYGON);
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glVertex3f(-1.0f, 1.0f, 0.0f);
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glVertex3f( 1.0f, 1.0f, 0.0f);
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glVertex3f( 1.0f,-1.0f, 0.0f);
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glVertex3f(-1.0f,-1.0f, 0.0f);
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glEnd();
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glTranslatef(3.0f, 0.0f, 0.0f);
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glBegin(GL_POLYGON);
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glVertex3f(-0.0f, 1.0f, 0.0f);
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glVertex3f(-0.75f, 0.75f, 0.0f);
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glVertex3f(-1.0f, 0.0f, 0.0f);
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glVertex3f(-0.75f,-0.75f, 0.0f);
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glVertex3f(-0.0f,-1.0f, 0.0f);
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glVertex3f( 0.75f,-0.75f, 0.0f);
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glVertex3f( 1.0f, 0.0f, 0.0f);
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glVertex3f( 0.75f, 0.75f, 0.0f);
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glEnd();
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glKosSwapBuffers();
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}
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int main(int argc, char **argv)
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{
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glKosInit();
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InitGL(640, 480);
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ReSizeGLScene(640, 480);
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while(1) {
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DrawGLScene();
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}
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return 0;
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}
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