nuclear@2: #include <stdio.h>
nuclear@2: #include <assert.h>
nuclear@3: #include <unistd.h>
nuclear@1: #include "opengl.h"
nuclear@0: #include "istereo.h"
nuclear@2: #include "sanegl.h"
nuclear@2: #include "sdr.h"
nuclear@4: #include "respath.h"
nuclear@4: 
nuclear@6: void dbg_draw(void);
nuclear@4: static unsigned int get_shader_program(const char *vfile, const char *pfile);
nuclear@2: 
nuclear@2: unsigned int prog;
nuclear@0: 
nuclear@0: int init(void)
nuclear@0: {
nuclear@4: 	add_resource_path("sdr");
nuclear@3: 
nuclear@4: 	if(!(prog = get_shader_program("test.v.glsl", "test.p.glsl"))) {
nuclear@2: 		fprintf(stderr, "failed to load shader program\n");
nuclear@2: 		return -1;
nuclear@2: 	}
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: void cleanup(void)
nuclear@0: {
nuclear@2: 	free_program(prog);
nuclear@0: }
nuclear@0: 
nuclear@0: void redraw(void)
nuclear@0: {
nuclear@5: 	glClearColor(0.4, 0.6, 1.0, 1.0);
nuclear@0: 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@2: 
nuclear@2: 	bind_program(prog);
nuclear@2: 
nuclear@2: 	gl_matrix_mode(GL_MODELVIEW);
nuclear@2: 	gl_load_identity();
nuclear@2: 	gl_translatef(0, 0, -8);
nuclear@2: 
nuclear@6: 	dbg_draw();
nuclear@6: 
nuclear@9: 	/*gl_begin(GL_QUADS);
nuclear@2: 	gl_color3f(1, 0, 0);
nuclear@2: 	gl_vertex3f(-1, -1, 0);
nuclear@2: 	gl_color3f(0, 1, 0);
nuclear@2: 	gl_vertex3f(1, -1, 0);
nuclear@2: 	gl_color3f(0, 0, 1);
nuclear@2: 	gl_vertex3f(1, 1, 0);
nuclear@2: 	gl_color3f(1, 1, 0);
nuclear@2: 	gl_vertex3f(-1, 1, 0);
nuclear@9: 	gl_end();*/
nuclear@2: 
nuclear@2: 	assert(glGetError() == GL_NO_ERROR);
nuclear@0: }
nuclear@2: 
nuclear@2: void reshape(int x, int y)
nuclear@2: {
nuclear@2: 	glViewport(0, 0, x, y);
nuclear@2: 
nuclear@2: 	gl_matrix_mode(GL_PROJECTION);
nuclear@2: 	gl_load_identity();
nuclear@2: 	glu_perspective(45.0, (float)x / (float)y, 1.0, 1000.0);
nuclear@2: }
nuclear@4: 
nuclear@4: static unsigned int get_shader_program(const char *vfile, const char *pfile)
nuclear@4: {
nuclear@4: 	unsigned int prog, vs, ps;
nuclear@4: 
nuclear@4: 	if(!(vs = get_vertex_shader(find_resource(vfile, 0, 0)))) {
nuclear@4: 		return -1;
nuclear@4: 	}
nuclear@4: 	if(!(ps = get_pixel_shader(find_resource(pfile, 0, 0)))) {
nuclear@4: 		return -1;
nuclear@4: 	}
nuclear@4: 
nuclear@4: 	if(!(prog = create_program_link(vs, ps))) {
nuclear@4: 		return -1;
nuclear@4: 	}
nuclear@10: 
nuclear@10: 	glBindAttribLocation(prog, 0, "attr_vertex");
nuclear@10: 	glBindAttribLocation(prog, 1, "attr_color");
nuclear@10: 	glLinkProgram(prog);
nuclear@10: 
nuclear@4: 	return prog;
nuclear@4: }
nuclear@6: 
nuclear@6: void dbg_draw(void)
nuclear@6: {
nuclear@9: 	static const GLfloat squareVertices[] = {
nuclear@9:         -0.5f, -0.33f,
nuclear@9:          0.5f, -0.33f,
nuclear@9:         -0.5f,  0.33f,
nuclear@9:          0.5f,  0.33f,
nuclear@9:     };
nuclear@9: 
nuclear@9:     static const GLubyte squareColors[] = {
nuclear@9:         255, 255,   0, 255,
nuclear@9:         0,   255, 255, 255,
nuclear@9:         0,     0,   0,   0,
nuclear@9:         255,   0, 255, 255,
nuclear@9:     };
nuclear@9: 
nuclear@6: 	int vloc, cloc;
nuclear@6: 
nuclear@9:     glUseProgram(prog);
nuclear@9: 
nuclear@6: 	gl_apply_xform(prog);
nuclear@6: 
nuclear@10: 	vloc = 0;//glGetAttribLocation(prog, "attr_vertex");
nuclear@10: 	cloc = 1;//glGetAttribLocation(prog, "attr_color");
nuclear@9: 	assert(vloc >= 0 && cloc >= 0);
nuclear@6: 
nuclear@9:     glVertexAttribPointer(vloc, 2, GL_FLOAT, 0, 0, squareVertices);
nuclear@9:     glEnableVertexAttribArray(vloc);
nuclear@9:     glVertexAttribPointer(cloc, 4, GL_UNSIGNED_BYTE, 1, 0, squareColors);
nuclear@9:     glEnableVertexAttribArray(cloc);
nuclear@8: 
nuclear@9:     glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
nuclear@6: 
nuclear@6: 	glDisableVertexAttribArray(vloc);
nuclear@6: 	glDisableVertexAttribArray(cloc);
nuclear@6: }