Attachment 47657 Details for Bug 37028 – simple test app

simple test app

query.cpp (text/plain), 2.95 KB, created by Pierre-Eric Pelloux-Prayer on 2011-06-07 05:18:56 UTC

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Creator: Pierre-Eric Pelloux-Prayer

Created: 2011-06-07 05:18:56 UTC

Size: 2.95 KB

patch

obsolete

>/*
>Compile with :
>g++ query.cpp -g -lglfw -lGL -lGLEW -lGLU -o query
>
>*/
>#include <GL/glew.h>
>#include <GL/glfw.h>
>#include <GL/gl.h>
>#include <cassert>
>#include <iostream>
>#include <cmath>
>#include <cstdlib>
>#include <climits>
>
>GLfloat n[6][3] = {  /* Normals for the 6 faces of a cube. */
>  {-1.0, 0.0, 0.0}, {0.0, 1.0, 0.0}, {1.0, 0.0, 0.0},
>  {0.0, -1.0, 0.0}, {0.0, 0.0, 1.0}, {0.0, 0.0, -1.0} };
>GLint faces[6][4] = {  /* Vertex indices for the 6 faces of a cube. */
>  {0, 1, 2, 3}, {3, 2, 6, 7}, {7, 6, 5, 4},
>  {4, 5, 1, 0}, {5, 6, 2, 1}, {7, 4, 0, 3} };
>GLfloat v[8][3];  /* Will be filled in with X,Y,Z vertexes. */
>
>void drawBox(void) {
>	for (int i = 0; i < 6; i++) {
>		glBegin(GL_QUADS);
>		glNormal3fv(&n[i][0]);
>		glVertex3fv(&v[faces[i][0]][0]);
>		glVertex3fv(&v[faces[i][1]][0]);
>		glVertex3fv(&v[faces[i][2]][0]);
>		glVertex3fv(&v[faces[i][3]][0]);
>		glEnd();
>	}
>}
>
>#define CHECK_GL_ERROR {GLenum err = glGetError(); if (err != GL_NO_ERROR) { std::cout << "Error : " << gluErrorString(err) << std::endl; assert(false); }}
>
>float randf() {
>	return rand() / (float)INT_MAX;
>}
>
>int main(int argc, char** argv) {
>	glfwInit();
>
>	int num_queries = 50;
>	if (argc > 1) num_queries = atoi(argv[1]);
>
>	int w = 640, h =400 ;
>	glfwOpenWindow(w, h, 8, 8, 8, 8, 24, 8, GLFW_WINDOW);
>
>	glewInit();
>    
>	// setup camera
>	glMatrixMode(GL_PROJECTION);
>	glLoadIdentity();
>	gluPerspective(70, w / (float)h, 0.1, 200);
>	glMatrixMode(GL_MODELVIEW);
>	glLoadIdentity();
>	gluLookAt(0.0, 0.0, 5.0,  /* eye is at (0,0,5) */
>			0.0, 0.0, 0.0,      /* center is at (0,0,0) */
>			0.0, 1.0, 0.);      /* up is in positive Y direction */
>	glClearColor(1,1,1,1);
>	glColor3f(1,0,0);
>
>	/* Setup cube vertex data. */
>	v[0][0] = v[1][0] = v[2][0] = v[3][0] = -1;
>	v[4][0] = v[5][0] = v[6][0] = v[7][0] = 1;
>	v[0][1] = v[1][1] = v[4][1] = v[5][1] = -1;
>	v[2][1] = v[3][1] = v[6][1] = v[7][1] = 1;
>	v[0][2] = v[3][2] = v[4][2] = v[7][2] = 1;
>	v[1][2] = v[2][2] = v[5][2] = v[6][2] = -1;
>
>	
>	GLuint queryIds[num_queries];
>	glGenQueries(num_queries, queryIds);
>
>   while(true) {
>		CHECK_GL_ERROR
>
>		glMatrixMode(GL_MODELVIEW);
>		glLoadIdentity();
>		gluLookAt(0.0, 0.0, 5.0,  /* eye is at (0,0,5) */
>    			0.0, 0.0, 0.0,      /* center is at (0,0,0) */
>    			0.0, 1.0, 0.);      /* up is in positive Y direction */
>
>		/* Change cube position */
>		glTranslatef(randf(), randf(), randf());
>		glRotatef(60, 1.0, 0.0, 0.0);
>		glRotatef(-20, 0.0, 0.0, 1.0);
>
>		int prev = -1;
>		for(int i=0; i<num_queries; ++i) {
>			glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
>			glBeginQuery(GL_SAMPLES_PASSED, queryIds[i]);
>			drawBox();
>			glEndQuery(GL_SAMPLES_PASSED);
>
>			GLint param;
>			glGetQueryObjectiv(queryIds[i], GL_QUERY_RESULT, &param);
>
>			if (prev < 0) prev = param;
>			else {
>				if (prev != param) {
>					std::cout << "query error : " << prev << " != " << param << std::endl;
>					assert(false);
>				}
>			}
>		}
>      
>		glfwSwapBuffers();
>
>		if (glfwGetKey( GLFW_KEY_ESC ) || !glfwGetWindowParam( GLFW_OPENED )) break;
>	}
>
>	return 0;
>}

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Attachments on bug 37028: 46492 | 46493 | 46494 | 47127 | 47128 | 47621 | 47657 | 47666 | 47669 | 47680

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