View Full Version : help needed in deferred shading

03-11-2008, 12:57 PM
i'm busy with creating an editor, recently i've switched to deferred shading as opposed of forward shading, everything is working so far i've set up my fbo's and render a full screen quad. but i'm having difficulties to get the actual light working. I've uploaded the binary to this site :

http://home.hccnet.nl/pj.holverda/ (binary.rar)

there is a basic map included in the rar, which can be loaded.
the actual deffered pass is in data/glsl/deferred_light.frag/vert
can you guys please, modify this, to add a point light(and maybe a directional light ) at a specific location.



03-11-2008, 08:29 PM
Your problem is too broad, try to narrow it down to the point where its a specific question and you'll have more luck. Most people are unwilling (or unable) to download a random binary and work through large amounts of other peoples source.

03-12-2008, 01:34 AM
okay i'm sorry:), but try to download it anyway, the editor is coming along nicely;)

here are the relevant shaders
varying vec4 view;
varying vec3 eyeLight;
varying vec2 texCoord;

void main(void)
gl_Position = ftransform();
view = (gl_ModelViewMatrix * gl_Vertex);
//eyeLight = (gl_ModelViewMatrix * vec4(0.0,0.0, 256.0, 1.0)).xyz;
texCoord = gl_MultiTexCoord0.xy;


uniform sampler2D tex0; //diffusetex
uniform sampler2D tex1; //normaltex(in eye space)
uniform sampler2D tex2; //depth texture
uniform vec3 lightPos;
uniform vec2 planes;
varying vec4 view;

varying vec3 lightVec;
varying vec3 eyeLight;

varying vec2 texCoord;

void main(){
vec4 base = texture2D(tex0, texCoord);
vec3 bump = texture2D(tex1, texCoord).xyz ;
float depth = texture2D(tex2, texCoord).r ;

float z = planes.y/(planes.x - depth);

//view = normalize(view);
vec3 modelView = vec3 (view.xy/view.z * z, z);

// compute light vector
vec3 LightVector = normalize( eyeLight-modelView );

float NdotL = dot( bump, LightVector );
//gl_FragData[0] = vec4(bump, 1.0);
gl_FragData[0] = base;//pow( depth, 100.0 );

i've think i'm almost there, i just need some pointers(no pun intended)