nuclear@1: #include <stdio.h>
nuclear@1: #include <stdlib.h>
nuclear@1: #include <string.h>
nuclear@1: #include "opengl.h"
nuclear@1: 
nuclear@1: namespace gph {
nuclear@1: 
nuclear@1: GLCaps glcaps;
nuclear@1: 
nuclear@1: static void fill_glcaps();
nuclear@1: static void print_glcaps(GLCaps *caps);
nuclear@1: 
nuclear@1: bool init_opengl()
nuclear@1: {
nuclear@1: 	glewInit();
nuclear@1: 	fill_glcaps();
nuclear@1: 	return true;
nuclear@1: }
nuclear@1: 
nuclear@1: static void fill_glcaps()
nuclear@1: {
nuclear@1: 	memset(&glcaps, 0, sizeof glcaps);
nuclear@1: 
nuclear@1: 	glcaps.version = strdup((const char*)glGetString(GL_VERSION));
nuclear@1: 	glcaps.renderer = strdup((const char*)glGetString(GL_RENDERER));
nuclear@1: 	glcaps.vendor = strdup((const char*)glGetString(GL_VENDOR));
nuclear@1: 
nuclear@1: 	glcaps.sdr = GLEW_ARB_shading_language_100;
nuclear@1: 	if(glcaps.sdr) {
nuclear@1: 		glcaps.sdr_ver = strdup((const char*)glGetString(GL_SHADING_LANGUAGE_VERSION));
nuclear@1: 	}
nuclear@1: 
nuclear@1: 	glcaps.fbo = GLEW_ARB_framebuffer_object || GLEW_EXT_framebuffer_object;
nuclear@1: 	glcaps.tex_float = GLEW_ARB_texture_float;
nuclear@1: 	glcaps.npow2_tex = GLEW_ARB_texture_non_power_of_two;
nuclear@1: 	glcaps.fsaa = GLEW_ARB_multisample;
nuclear@1: 
nuclear@1: 	glGetIntegerv(GL_MAX_TEXTURE_UNITS, &glcaps.max_tex_units);
nuclear@1: 	if(glcaps.fbo) {
nuclear@1: 		glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &glcaps.max_mrt);
nuclear@1: 	}
nuclear@1: 	if(glcaps.fsaa) {
nuclear@1: 		glGetIntegerv(GL_MAX_SAMPLES, &glcaps.max_samples);
nuclear@1: 	} else {
nuclear@1: 		glcaps.max_samples = 1;
nuclear@1: 	}
nuclear@1: 	if(GLEW_EXT_texture_filter_anisotropic) {
nuclear@1: 		glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &glcaps.max_aniso);
nuclear@1: 	} else {
nuclear@1: 		glcaps.max_aniso = 1.0f;
nuclear@1: 	}
nuclear@1: 
nuclear@1: 	print_glcaps(&glcaps);
nuclear@1: }
nuclear@1: 
nuclear@1: static void print_glcaps(GLCaps *caps)
nuclear@1: {
nuclear@1: 	printf("OpenGL %s - %s - %s\n", caps->version, caps->vendor, caps->renderer);
nuclear@1: 
nuclear@1: 	printf("--- capabilities ---\n");
nuclear@1: 	printf("       GLSL shaders: %s\n", caps->sdr ? "yes" : "no");
nuclear@1: 	if(caps->sdr) {
nuclear@1: 		printf("       GLSL version: %s\n", caps->sdr_ver);
nuclear@1: 	}
nuclear@1: 	printf("framebuffer objects: %s\n", caps->fbo ? "yes" : "no");
nuclear@1: 	if(caps->fbo) {
nuclear@1: 		printf(" max render targets: %d\n", caps->max_mrt);
nuclear@1: 	}
nuclear@1: 	printf("       antialiasing: %s\n", caps->fsaa ? "yes" : "no");
nuclear@1: 	if(caps->fsaa) {
nuclear@1: 		printf("        max samples: %d\n", caps->max_samples);
nuclear@1: 	}
nuclear@1: 	printf("     float textures: %s\n", caps->tex_float ? "yes" : "no");
nuclear@1: 	printf("  non-pow2 textures: %s\n", caps->npow2_tex ? "yes" : "no");
nuclear@1: 	printf("      texture units: %d\n", caps->max_tex_units);
nuclear@1: 	printf("--------------------\n");
nuclear@1: }
nuclear@1: 
nuclear@1: }	// namespace gph