neercs: do not pass the texture coordinates from the application to

the GL server; instead, simply deduce them from the vertex coordinates
and interpolate them in the fragment shader.

neercs/video/blurh.lolfx

@@ -2,23 +2,27 @@
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 void main()
 {
     gl_Position = gl_Vertex;
-    gl_TexCoord[0] = gl_MultiTexCoord0;
+    pass_TexCoord = vec2(0.5, 0.5) + 0.5 * gl_Vertex.xy;
 }
 
 [frag.glsl]
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 uniform sampler2D texture;
 uniform vec2 radius;
 
 void main(void)
 {
     vec4 total = vec4(0.0);
-    vec2 p = gl_TexCoord[0].xy;
+    vec2 p = pass_TexCoord;
     float mask = 2.0-p.x*(6.0-p.x*6.0)*p.y*(6.0-p.y*6.0);
     float b = radius.x+radius.y*mask;
     total += texture2D(texture,vec2(p.x-b*4.0,p.y))*0.04;

neercs/video/blurv.lolfx

@@ -2,23 +2,27 @@
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 void main()
 {
     gl_Position = gl_Vertex;
-    gl_TexCoord[0] = gl_MultiTexCoord0;
+    pass_TexCoord = vec2(0.5, 0.5) + 0.5 * gl_Vertex.xy;
 }
 
 [frag.glsl]
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 uniform sampler2D texture;
 uniform vec2 radius;
 
 void main(void)
 {
     vec4 total = vec4(0.0);
-    vec2 p = gl_TexCoord[0].xy;
+    vec2 p = pass_TexCoord;
     float mask = 2.0-p.x*(6.0-p.x*6.0)*p.y*(6.0-p.y*6.0);
     float b = radius.x+radius.y*mask;
     total += texture2D(texture,vec2(p.x,p.y-b*4.0))*0.04;

neercs/video/color.lolfx

@@ -5,7 +5,6 @@
 void main()
 {
     gl_Position = gl_Vertex;
-    gl_TexCoord[0] = gl_MultiTexCoord0;
 }
 
 [frag.glsl]
@@ -20,7 +19,7 @@ uniform float flash;
 
 void main(void)
 {
-    vec2 p = gl_FragCoord.xy/screen_size.xy;
+    vec2 p = gl_FragCoord.xy / screen_size.xy;
     vec3 c = texture2D(texture,p).xyz;
 
     float a = (c.x + c.y + c.z) / 3.0;
@@ -32,4 +31,4 @@ void main(void)
     c += flash;                                // flash
 
     gl_FragColor = vec4(c, 1.0);
-}
+}

neercs/video/copper.lolfx

@@ -2,16 +2,20 @@
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 void main()
 {
     gl_Position = gl_Vertex;
-    gl_TexCoord[0] = gl_MultiTexCoord0;
+    pass_TexCoord = vec2(0.5, 0.5) + 0.5 * gl_Vertex.xy;
 }
 
 [frag.glsl]
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 uniform sampler2D texture;
 uniform vec2 screen_size;
 uniform float time;
@@ -20,7 +24,7 @@ uniform vec3 mask_color;
 
 void main(void)
 {
-    vec2 p = gl_TexCoord[0].xy;
+    vec2 p = pass_TexCoord;
     vec3 source = texture2D(texture, p).xyz;
 
     vec3 color = vec3(0.5);
@@ -35,4 +39,4 @@ void main(void)
     color.z = float(int(color.z * 8.0) * 32) / 256.0;
 
     gl_FragColor = vec4((source == mask_color) ? color : source, 1.0);
-}
+}

neercs/video/glow.lolfx

@@ -2,21 +2,27 @@
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 void main()
 {
     gl_Position = gl_Vertex;
-    gl_TexCoord[0] = gl_MultiTexCoord0;
+    pass_TexCoord = vec2(0.5, 0.5) + 0.5 * gl_Vertex.xy;
 }
 
 [frag.glsl]
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 uniform sampler2D glow;
 uniform sampler2D source;
 uniform vec2 mix;
 
 void main(void)
 {
-    gl_FragColor = texture2D(source,gl_TexCoord[0].xy)*mix.x+texture2D(glow,gl_TexCoord[0].xy)*mix.y;
+    gl_FragColor = texture2D(source, pass_TexCoord) * mix.x
+                 + texture2D(glow, pass_TexCoord) * mix.y;
 }
+

neercs/video/mirror.lolfx

@@ -2,23 +2,27 @@
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 void main()
 {
     gl_Position = gl_Vertex;
-    gl_TexCoord[0] = gl_MultiTexCoord0;
+    pass_TexCoord = vec2(0.5, 0.5) + 0.5 * gl_Vertex.xy;
 }
 
 [frag.glsl]
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 uniform sampler2D texture;
 uniform vec2 screen_size;
 uniform vec4 mirror;
 
 void main(void)
 {
-    vec2 p = gl_TexCoord[0].xy;
+    vec2 p = pass_TexCoord;
     vec3 s = texture2D(texture, p).xyz;
 
     vec3 c = vec3(0.0);
@@ -28,4 +32,4 @@ void main(void)
     if(p.y > 1.0 - mirror.y) c += texture2D(texture, vec2(p.x * (0.8 + 2.0 * (1.0 - p.y)) + 0.1 - 1.0 * (1.0 - p.y), - mirror.y - (mirror.y + p.y) * mirror.w)).xyz * (mirror.z / mirror.y * (1.0 - p.y));
 
     gl_FragColor = vec4(s + c, 1.0);
-}
+}

neercs/video/noise.lolfx

@@ -4,8 +4,7 @@
 
 void main()
 {
-    gl_Position=gl_Vertex;
-    gl_TexCoord[0]=gl_MultiTexCoord0;
+    gl_Position = gl_Vertex;
 }
 
 [frag.glsl]
@@ -19,9 +18,9 @@ uniform vec2 offset;
 uniform float noise;
 uniform vec3 retrace;
 
-float rand(in vec2 p,in float t,in float v)
+float rand(in vec2 p, in float t, in float v)
 {
-    return fract(sin(dot(p+mod(t,1.0),vec2(12.9898,78.2333)))*v);
+    return fract(sin(dot(p + mod(t, 1.0), vec2(12.9898, 78.2333))) * v);
 }
 
 void main(void)
@@ -36,4 +35,4 @@ void main(void)
     c*=1.0+(noise-noise*2.0*r1);                                // noise
     c-=retrace.x*0.01*mod(p.y*retrace.y+time*retrace.z,1.0);    // retrace
     gl_FragColor=vec4(c,1.0);
-}
+}

neercs/video/postfx.lolfx

@@ -4,8 +4,7 @@
 
 void main()
 {
-    gl_Position=gl_Vertex;
-    gl_TexCoord[0]=gl_MultiTexCoord0;
+    gl_Position = gl_Vertex;
 }
 
 [frag.glsl]
@@ -104,4 +103,4 @@ void main(void)
     c*=letterbox(z,corner.x+2.0,corner.y,corner.z);          // corner
     c+=(g3+g4)*glass.z;                                      // glass
     gl_FragColor=vec4(c,1.0);
-}
+}

neercs/video/radial.lolfx

@@ -2,16 +2,20 @@
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 void main()
 {
     gl_Position = gl_Vertex;
-    gl_TexCoord[0] = gl_MultiTexCoord0;
+    pass_TexCoord = vec2(0.5, 0.5) + 0.5 * gl_Vertex.xy;
 }
 
 [frag.glsl]
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 uniform sampler2D texture;
 uniform vec2 screen_size;
 uniform vec4 radial;
@@ -25,7 +29,7 @@ vec3 deform(in vec2 p)
 
 void main(void)
 {
-    vec2 p = -1.0+2.0*gl_TexCoord[0].xy;
+    vec2 p = -1.0 + 2.0 * pass_TexCoord;
     vec2 s = p;
     vec3 source=deform(s);
 
@@ -41,4 +45,4 @@ void main(void)
         s += d;
         }
     gl_FragColor = vec4(source + color * radial.w, 1.0);
-}
+}

neercs/video/remanence.lolfx

@@ -2,24 +2,28 @@
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 void main()
 {
     gl_Position = gl_Vertex;
-    gl_TexCoord[0] = gl_MultiTexCoord0;
+    pass_TexCoord = vec2(0.5, 0.5) + 0.5 * gl_Vertex.xy;
 }
 
 [frag.glsl]
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 uniform sampler2D source;
 uniform sampler2D buffer;
 uniform vec2 mix;
 
 void main(void)
 {
-    vec4 old_color = texture2D(buffer, gl_TexCoord[0].xy);
-    vec4 new_color = texture2D(source, gl_TexCoord[0].xy);
+    vec4 old_color = texture2D(buffer, pass_TexCoord);
+    vec4 new_color = texture2D(source, pass_TexCoord);
 
     /* The old way */
     //gl_FragColor = new_color * mix.x + old_color * mix.y;

neercs/video/render.cpp

@@ -67,8 +67,13 @@ float main_angle = 0.0f;   // main angle
 float part_angle = 0.0f;   // part angle
 float fx_angle;            // current angle
 /* fs_quad variable */
-float fs_quad_vtx[] = {-1.0f, 1.0f, 0, 1.0f, -1.0f, -1.0f, 0, 1.0f, 1.0f, -1.0f, 0, 1.0f, 1.0f, 1.0f, 0, 1.0f};
-float fs_quad_tex[] = {0, 1.0f, 0, 0, 1.0f, 0, 1.0f, 1.0f};
+float fs_quad_vtx[] =
+{
+    -1.0f,  1.0f, 0, 1.0f,
+    -1.0f, -1.0f, 0, 1.0f,
+     1.0f, -1.0f, 0, 1.0f,
+     1.0f,  1.0f, 0, 1.0f
+};
 /* flash variable */
 bool flash_flag = false;   // flag
 float flash_angle = 0;     // angle
@@ -1471,7 +1476,7 @@ void Render::Draw2D()
     glLoadMatrixf(&m[0][0]);
     glMatrixMode(GL_MODELVIEW);
 
-    fx_angle=main_angle-part_angle;
+    fx_angle = main_angle - part_angle;
 }
 
 void Render::Draw3D()
@@ -1485,9 +1490,6 @@ void Render::Draw3D()
     glEnableClientState(GL_VERTEX_ARRAY);
     glVertexPointer(4, GL_FLOAT, 0, fs_quad_vtx);
 
-    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-    glTexCoordPointer(2, GL_FLOAT, 0, fs_quad_tex);
-
     if (m_shader_copper)
     {
         // shader copper
@@ -1723,11 +1725,10 @@ void Render::Draw3D()
     ShaderSimple(fbo_front, 0);
 
     glDisableClientState(GL_VERTEX_ARRAY);
-    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 }
 
 Render::~Render()
 {
     if (m_fps_debug)
         Ticker::Unref(m_fps_debug);
-}
+}

neercs/video/simple.lolfx

@@ -2,20 +2,24 @@
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 void main()
 {
     gl_Position = gl_Vertex;
-    gl_TexCoord[0] = gl_MultiTexCoord0;
+    pass_TexCoord = vec2(0.5, 0.5) + 0.5 * gl_Vertex.xy;
 }
 
 [frag.glsl]
 
 #version 120
 
+varying vec2 pass_TexCoord;
+
 uniform sampler2D texture;
 
 void main(void)
 {
-    gl_FragColor = texture2D(texture, gl_TexCoord[0].xy);
+    gl_FragColor = texture2D(texture, pass_TexCoord);
 }