Created on 23.11.2004 - 13:45

.slv

uniform vec4 OGL2Param;
uniform vec4 OGL2Size;
varying vec2 TCoord;

void main()
{
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;

TCoord = gl_MultiTexCoord0.xy;

}

.slf

uniform vec4 OGL2Param;
uniform vec4 OGL2Size;
uniform sampler2D OGL2Texture;
varying vec2 TCoord;

void main()
{
float offsetx = 1.0/OGL2Size.x;
float offsety = 1.0/OGL2Size.y;
float param = OGL2Param.z;
float tmp;
vec3 togray;


togray.x = 0.10000000;
togray.y = 0.19666667;
togray.z = 0.03666667;

vec4 c = texture2D(OGL2Texture, TCoord); //center
vec4 bl = texture2D(OGL2Texture, TCoord + vec2(-offsetx,-offsety)); //bottom-left
vec4 l = texture2D(OGL2Texture, TCoord + vec2(-offsetx, 0.0)); //left
vec4 tl = texture2D(OGL2Texture, TCoord + vec2(-offsetx, offsety)); //top-left
vec4 t = texture2D(OGL2Texture, TCoord + vec2( 0.0, offsety)); //top
vec4 tr = texture2D(OGL2Texture, TCoord + vec2( offsetx, offsety)); //top-right
vec4 r = texture2D(OGL2Texture, TCoord + vec2( offsetx, 0.0)); //right
vec4 br = texture2D(OGL2Texture, TCoord + vec2( offsetx, offsety)); //bottom-right
vec4 b = texture2D(OGL2Texture, TCoord + vec2( 0.0,-offsety)); //bottom

vec4 border = (bl - c) + (l - c) + (tl - c) + (t - c) + (tr - c) + (r - c) + (br - c) + (b - c);

tmp = (border.x * togray.x + border.y * togray.y + border.z * togray.z);

if ( tmp >= (0.4 - 0.1 * param))

gl_FragColor = (c + bl + l + tl + t + tr + r + br + b)/9.0;
}

Created on 25.11.2004 - 13:58

Hi Guest
for example:
if ( tmp >= (0.3 - 0.1 * param))...
have you tried this?
what do you think about?
Bye

Created on 25.11.2004 - 15:50

correction...

.slf

uniform vec4 OGL2Param;
uniform vec4 OGL2Size;
uniform sampler2D OGL2Texture;
varying vec2 TCoord;

void main()
{
float offsetx = 1.0/OGL2Size.x;
float offsety = 1.0/OGL2Size.y;
float param = OGL2Param.z;
float tmp;
vec3 togray;


togray.x = 0.30;
togray.y = 0.59;
togray.z = 0.11;

vec4 c = texture2D(OGL2Texture, TCoord); //center
vec4 bl = texture2D(OGL2Texture, TCoord + vec2(-offsetx,-offsety)); //bottom-left
vec4 l = texture2D(OGL2Texture, TCoord + vec2(-offsetx, 0.0)); //left
vec4 tl = texture2D(OGL2Texture, TCoord + vec2(-offsetx, offsety)); //top-left
vec4 t = texture2D(OGL2Texture, TCoord + vec2( 0.0, offsety)); //top
vec4 tr = texture2D(OGL2Texture, TCoord + vec2( offsetx, offsety)); //top-right
vec4 r = texture2D(OGL2Texture, TCoord + vec2( offsetx, 0.0)); //right
vec4 br = texture2D(OGL2Texture, TCoord + vec2( offsetx, offsety)); //bottom-right
vec4 b = texture2D(OGL2Texture, TCoord + vec2( 0.0,-offsety)); //bottom

vec4 border = (bl - c) + (l - c) + (tl - c) + (t - c) + (tr - c) + (r - c) + (br - c) + (b - c);

tmp = (border.x * togray.x + border.y * togray.y + border.z * togray.z);

if ( tmp >= (0.4 - 0.1 * param)) // or (tmp >= 0.3 - 0.1 * param)

gl_FragColor = (c + bl + l + tl + t + tr + r + br + b)/9.0;
}

Created on 30.07.2005 - 11:15

There are manny nice shaders on this board which are not yet fully optimised.

I, on my behalf, am thinking about making a revision and add better texel maping and so.

With swizzling or diagonal-coord-sharing speedups up to 30% can be achieved.

PS: Perhaps Pete could help you out to delete the "obsolete" shaders of the ShadX(nr).

Created on 15.08.2005 - 18:35

I like it



[Dieser Beitrag wurde am 15.08.2005 - 18:41 von Superman aktualisiert]