SH-1682 Work in progress on using texture indexes to improve batch size (wow, super fast so far)

1 files changed, 28 insertions, 36 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
index 3429877397..30231039b0 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
@@ -9,56 +9,48 @@
 
 #extension GL_ARB_texture_rectangle : enable
 
-uniform sampler2D diffuseMap;
-uniform sampler2DRect depthMap;
-uniform sampler2D noiseMap;
-
-uniform vec4 shadow_clip;
-uniform vec2 screen_res;
+varying float vary_texture_index;
+
+uniform sampler2D tex0;
+uniform sampler2D tex1;
+uniform sampler2D tex2;
+uniform sampler2D tex3;
+uniform sampler2D tex4;
+uniform sampler2D tex5;
+uniform sampler2D tex6;
+uniform sampler2D tex7;
+
+vec4 textureLookup(vec2 texcoord)
+{
+	switch (int(vary_texture_index+0.25))
+	{
+		case 0: return texture2D(tex0, texcoord);
+		case 1: return texture2D(tex1, texcoord);
+		case 2: return texture2D(tex2, texcoord);
+		case 3: return texture2D(tex3, texcoord);
+		case 4: return texture2D(tex4, texcoord);
+		case 5: return texture2D(tex5, texcoord);
+		case 6: return texture2D(tex6, texcoord);
+		case 7: return texture2D(tex7, texcoord);
+	}
+
+	return vec4(0,0,0,0);
+}
 
 vec3 fullbrightAtmosTransport(vec3 light);
 vec3 fullbrightScaleSoftClip(vec3 light);
 
-varying vec3 vary_ambient;
-varying vec3 vary_directional;
-varying vec4 vary_position;
-varying vec3 vary_normal;
-varying vec3 vary_fragcoord;
-
-uniform mat4 inv_proj;
-
-vec4 getPosition(vec2 pos_screen)
-{
-	float depth = texture2DRect(depthMap, pos_screen.xy).a;
-	vec2 sc = pos_screen.xy*2.0;
-	sc /= screen_res;
-	sc -= vec2(1.0,1.0);
-	vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
-	vec4 pos = inv_proj * ndc;
-	pos /= pos.w;
-	pos.w = 1.0;
-	return pos;
-}
 
 void main() 
 {
-	vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
-	frag *= screen_res;
-	
-	vec3 samp_pos = getPosition(frag).xyz; 
-	
 	float shadow = 1.0;
-	vec4 pos = vary_position;
 
-	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy)*gl_Color;
+	vec4 color = textureLookup(gl_TexCoord[0].xy)*gl_Color;
 	
 	color.rgb = fullbrightAtmosTransport(color.rgb);
 
 	color.rgb = fullbrightScaleSoftClip(color.rgb);
 
-	//gl_FragColor = gl_Color;
 	gl_FragColor = color;
-	//gl_FragColor = vec4(1,0,1,1);
-	
 }