nuclear@44: #include <limits.h>
nuclear@15: #include "opengl.h"
nuclear@15: #include "renderer.h"
nuclear@23: #include "level.h"
nuclear@15: #include "sdr.h"
nuclear@15: #include "datapath.h"
nuclear@15: 
nuclear@41: static unsigned int load_sdr(const char *vfname, const char *pfname);
nuclear@35: 
nuclear@41: Renderer *rend;
nuclear@18: 
nuclear@15: 
nuclear@41: Renderer::Renderer()
nuclear@41: {
nuclear@41: 	width = height = 0;
nuclear@41: }
nuclear@17: 
nuclear@41: Renderer::~Renderer()
nuclear@41: {
nuclear@41: }
nuclear@17: 
nuclear@41: bool Renderer::init(int xsz, int ysz)
nuclear@41: {
nuclear@41: 	width = xsz;
nuclear@41: 	height = ysz;
nuclear@17: 
nuclear@41: 	rend = this;
nuclear@41: 	return true;
nuclear@41: }
nuclear@15: 
nuclear@41: int Renderer::get_tangent_location() const
nuclear@41: {
nuclear@41: 	return -1;
nuclear@41: }
nuclear@15: 
nuclear@41: unsigned int Renderer::get_current_program() const
nuclear@41: {
nuclear@41: 	return 0;
nuclear@41: }
nuclear@21: 
nuclear@41: void Renderer::resize(int xsz, int ysz)
nuclear@41: {
nuclear@41: 	width = xsz;
nuclear@41: 	height = ysz;
nuclear@41: }
nuclear@21: 
nuclear@41: 
nuclear@41: // ---- fallback forward renderer ----
nuclear@41: FwdRenderer::FwdRenderer()
nuclear@17: {
nuclear@41: 	sdrprog = 0;
nuclear@41: 	tang_attr = -1;
nuclear@41: }
nuclear@41: 
nuclear@41: FwdRenderer::~FwdRenderer()
nuclear@41: {
nuclear@41: 	if(sdrprog) {
nuclear@41: 		free_program(sdrprog);
nuclear@32: 	}
nuclear@41: }
nuclear@21: 
nuclear@41: bool FwdRenderer::init(int xsz, int ysz)
nuclear@41: {
nuclear@41: 	width = xsz;
nuclear@41: 	height = ysz;
nuclear@19: 
nuclear@41: 	if(glUseProgram && (sdrprog = load_sdr("fallback.v.glsl", "fallback.p.glsl"))) {
nuclear@41: 		tang_attr = get_attrib_loc(sdrprog, "attr_tangent");
nuclear@41: 		set_uniform_int(sdrprog, "tex_dif", 0);
nuclear@41: 		set_uniform_int(sdrprog, "tex_norm", 1);
nuclear@23: 	}
nuclear@17: 	return true;
nuclear@17: }
nuclear@17: 
nuclear@41: int FwdRenderer::get_tangent_location() const
nuclear@17: {
nuclear@41: 	return tang_attr;
nuclear@17: }
nuclear@17: 
nuclear@41: unsigned int FwdRenderer::get_current_program() const
nuclear@33: {
nuclear@41: 	return sdrprog;
nuclear@33: }
nuclear@33: 
nuclear@41: void FwdRenderer::render(const Level *level) const
nuclear@35: {
nuclear@41: 	glPushAttrib(GL_ENABLE_BIT);
nuclear@51: 	glEnable(GL_LIGHTING);
nuclear@51: 	glEnable(GL_FOG);
nuclear@51: 	glFogi(GL_FOG_MODE, GL_LINEAR);
nuclear@51: 	glFogf(GL_FOG_START, 3.0f);
nuclear@51: 	glFogf(GL_FOG_END, 6.0f);
nuclear@51: 
nuclear@41: 	glUseProgram(sdrprog);
nuclear@35: 
nuclear@23: 	level->draw();
nuclear@20: 
nuclear@46: 	glUseProgram(0);
nuclear@46: 	level->draw_post();
nuclear@46: 
nuclear@41: 	glPopAttrib();
nuclear@17: }
nuclear@17: 
nuclear@18: static unsigned int load_sdr(const char *vfname, const char *pfname)
nuclear@15: {
nuclear@15: 	char vsfile[PATH_MAX], psfile[PATH_MAX];
nuclear@15: 	const char *fname;
nuclear@18: 	unsigned int prog;
nuclear@15: 
nuclear@18: 	if((fname = datafile_path(vfname))) {
nuclear@17: 		strcpy(vsfile, fname);
nuclear@17: 	} else {
nuclear@17: 		vsfile[0] = 0;
nuclear@17: 	}
nuclear@18: 	if((fname = datafile_path(pfname))) {
nuclear@17: 		strcpy(psfile, fname);
nuclear@17: 	} else {
nuclear@17: 		psfile[0] = 0;
nuclear@17: 	}
nuclear@18: 	if(!(prog = create_program_load(vsfile, psfile))) {
nuclear@18: 		fprintf(stderr, "failed to load shader program (%s, %s)\n", vsfile, psfile);
nuclear@18: 		return 0;
nuclear@15: 	}
nuclear@18: 	return prog;
nuclear@15: }