nuclear@0: #include <GLES2/gl2.h>
nuclear@0: #include <gmath/gmath.h>
nuclear@0: #include "spycam.h"
nuclear@0: #include "sdr.h"
nuclear@0: 
nuclear@0: static unsigned int sdr_prog, tex;
nuclear@0: static Mat4 world_matrix, view_matrix, proj_matrix;
nuclear@0: static int win_width, win_height;
nuclear@0: 
nuclear@0: bool app_init()
nuclear@0: {
nuclear@0: 	glClearColor(0.2, 0.2, 0.2, 1);
nuclear@0: 
nuclear@0: 	if(!(sdr_prog = create_program_load("sdr/vertex.glsl", "sdr/pixel.glsl"))) {
nuclear@0: 		fprintf(stderr, "failed to load shader program\n");
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: 	glUseProgram(sdr_prog);
nuclear@0: 	glBindAttribLocation(sdr_prog, 0, "a_vertex");
nuclear@0: 	glBindAttribLocation(sdr_prog, 1, "a_texcoord");
nuclear@0: 
nuclear@0: 	unsigned char *pixels = new unsigned char[256 * 256 * 3];
nuclear@0: 	unsigned char *pptr = pixels;
nuclear@0: 	for(int i=0; i<256; i++) {
nuclear@0: 		for(int j=0; j<256; j++) {
nuclear@0: 			bool chess = ((i >> 4) & 1) == ((j >> 4) & 1);
nuclear@0: 			*pptr++ = chess ? 255 : 64;
nuclear@0: 			*pptr++ = 128;
nuclear@0: 			*pptr++ = chess ? 64 : 255;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	glGenTextures(1, &tex);
nuclear@0: 	glBindTexture(GL_TEXTURE_2D, tex);
nuclear@0: 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
nuclear@0: 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
nuclear@0: 	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 256, 256, 0, GL_RGB, GL_UNSIGNED_BYTE, pixels);
nuclear@0: 	glGenerateMipmap(GL_TEXTURE_2D);
nuclear@0: 	delete [] pixels;
nuclear@0: 
nuclear@0: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: void app_cleanup()
nuclear@0: {
nuclear@0: }
nuclear@0: 
nuclear@0: void app_draw()
nuclear@0: {
nuclear@0: 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@0: 
nuclear@0: 	glUseProgram(sdr_prog);
nuclear@0: 	set_uniform_matrix4(sdr_prog, "world_mat", world_matrix[0]);
nuclear@0: 	set_uniform_matrix4(sdr_prog, "view_mat", view_matrix[0]);
nuclear@0: 	set_uniform_matrix4(sdr_prog, "proj_mat", proj_matrix[0]);
nuclear@0: 
nuclear@0: 	glBindTexture(GL_TEXTURE_2D, tex);
nuclear@0: 
nuclear@0: 	static const float quad_verts[] = {-1, -1, 1, -1, 1, 1, -1, 1};
nuclear@0: 	static const float quad_texcoords[] = {0, 0, 1, 0, 1, 1, 0, 1};
nuclear@0: 	static const unsigned int quad_idx[] = {0, 1, 2, 0, 2, 3};
nuclear@0: 
nuclear@0: 	glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, quad_verts);
nuclear@0: 	glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, quad_texcoords);
nuclear@0: 	glEnableVertexAttribArray(0);
nuclear@0: 	glEnableVertexAttribArray(1);
nuclear@0: 
nuclear@0: 	glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, quad_idx);
nuclear@0: 
nuclear@0: 	glDisableVertexAttribArray(0);
nuclear@0: 	glDisableVertexAttribArray(1);
nuclear@0: }
nuclear@0: 
nuclear@0: void app_reshape(int x, int y)
nuclear@0: {
nuclear@0: 	win_width = x;
nuclear@0: 	win_height = y;
nuclear@0: 	glViewport(0, 0, x, y);
nuclear@0: }
nuclear@0: 
nuclear@0: void app_keyboard(int key, bool press)
nuclear@0: {
nuclear@0: 	if(press) {
nuclear@0: 		switch(key) {
nuclear@0: 		case 27:
nuclear@0: 			app_quit();
nuclear@0: 			break;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: void app_mouse_button(int bn, bool press, int x, int y)
nuclear@0: {
nuclear@0: }
nuclear@0: 
nuclear@0: void app_mouse_motion(int x, int y)
nuclear@0: {
nuclear@0: }