1.1 --- a/prototype/src/renderer.cc	Tue Aug 28 03:34:56 2012 +0300
     1.2 +++ b/prototype/src/renderer.cc	Tue Aug 28 06:28:22 2012 +0300
     1.3 @@ -9,13 +9,18 @@
     1.4  #include "sdr.h"
     1.5  #include "datapath.h"
     1.6  
     1.7 +#undef DBG_VIS_MRT
     1.8 +
     1.9 +#ifdef DBG_VIS_MRT
    1.10 +static void deferred_debug();
    1.11 +#endif
    1.12  
    1.13  static bool create_fbo(int xsz, int ysz);
    1.14  static unsigned int load_sdr(const char *vfname, const char *pfname);
    1.15  static int round_pow2(int x);
    1.16  
    1.17  
    1.18 -#define MRT_COUNT	4
    1.19 +#define MRT_COUNT	3
    1.20  static unsigned int mrt_tex[MRT_COUNT];
    1.21  
    1.22  static unsigned int mrt_prog;
    1.23 @@ -102,6 +107,11 @@
    1.24  	return deferred_omni;
    1.25  }
    1.26  
    1.27 +int get_tangent_location(void)
    1.28 +{
    1.29 +	return get_attrib_loc(mrt_prog, "attr_tangent");
    1.30 +}
    1.31 +
    1.32  void resize_renderer(int xsz, int ysz)
    1.33  {
    1.34  	fb_xsz = xsz;
    1.35 @@ -143,6 +153,9 @@
    1.36  
    1.37  	glBindFramebufferEXT(GL_FRAMEBUFFER, 0);
    1.38  
    1.39 +#ifdef DBG_VIS_MRT
    1.40 +	deferred_debug();
    1.41 +#else
    1.42  
    1.43  	// post-process lighting
    1.44  	glPushAttrib(GL_ENABLE_BIT | GL_POLYGON_BIT);
    1.45 @@ -172,12 +185,14 @@
    1.46  
    1.47  	glUseProgram(0);
    1.48  	glPopAttrib();
    1.49 +#endif	// DBG_VIS_MRT
    1.50  }
    1.51  
    1.52  static bool create_fbo(int xsz, int ysz)
    1.53  {
    1.54 -	unsigned int clamp = GL_ARB_texture_border_clamp ? GL_CLAMP_TO_EDGE : GL_CLAMP;
    1.55 +	unsigned int clamp = GLEW_ARB_texture_border_clamp ? GL_CLAMP_TO_EDGE : GL_CLAMP;
    1.56  
    1.57 +	// round the texture size up to the next power of 2
    1.58  	tex_xsz = round_pow2(xsz);
    1.59  	tex_ysz = round_pow2(ysz);
    1.60  	fb_xsz = xsz;
    1.61 @@ -262,3 +277,50 @@
    1.62  	x = (x >> 16) | x;
    1.63  	return x + 1;
    1.64  }
    1.65 +
    1.66 +#ifdef DBG_VIS_MRT
    1.67 +// visualize the MRT buffers
    1.68 +static void deferred_debug()
    1.69 +{
    1.70 +	glPushAttrib(GL_ENABLE_BIT | GL_POLYGON_BIT);
    1.71 +	glUseProgram(deferred_debug);
    1.72 +	glDisable(GL_DEPTH_TEST);
    1.73 +
    1.74 +	glMatrixMode(GL_PROJECTION);
    1.75 +	glPushMatrix();
    1.76 +	glLoadIdentity();
    1.77 +	glMatrixMode(GL_MODELVIEW);
    1.78 +	glPushMatrix();
    1.79 +	glLoadIdentity();
    1.80 +
    1.81 +	for(int i=0; i<MRT_COUNT; i++) {
    1.82 +		glActiveTexture(GL_TEXTURE0 + i);
    1.83 +		glBindTexture(GL_TEXTURE_2D, mrt_tex[i]);
    1.84 +		glEnable(GL_TEXTURE_2D);
    1.85 +	}
    1.86 +
    1.87 +	glBegin(GL_QUADS);
    1.88 +	glTexCoord2f(0, 0);
    1.89 +	glVertex2f(-1, -1);
    1.90 +	glTexCoord2f(1, 0);
    1.91 +	glVertex2f(1, -1);
    1.92 +	glTexCoord2f(1, 1);
    1.93 +	glVertex2f(1, 1);
    1.94 +	glTexCoord2f(0, 1);
    1.95 +	glVertex2f(-1, 1);
    1.96 +	glEnd();
    1.97 +
    1.98 +	for(int i=0; i<MRT_COUNT; i++) {
    1.99 +		glActiveTexture(GL_TEXTURE0 + MRT_COUNT - i - 1);
   1.100 +		glDisable(GL_TEXTURE_2D);
   1.101 +	}
   1.102 +
   1.103 +	glMatrixMode(GL_PROJECTION);
   1.104 +	glPopMatrix();
   1.105 +	glMatrixMode(GL_MODELVIEW);
   1.106 +	glPopMatrix();
   1.107 +
   1.108 +	glUseProgram(0);
   1.109 +	glPopAttrib();
   1.110 +}
   1.111 +#endif