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

4 files changed, 39 insertions, 51 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
index 35cfb80c93..f71d9f0b49 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseF.glsl
@@ -20,3 +20,4 @@ void main()
 	vec3 nvn = normalize(vary_normal);
 	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
 }
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseV.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseV.glsl
index 03d3322cb6..b8de629fc8 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/diffuseV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseV.glsl
@@ -8,13 +8,15 @@
 #version 120
 
 varying vec3 vary_normal;
+varying float vary_texture_index;
 
 void main()
 {
 	//transform vertex
-	gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; 
+	gl_Position = gl_ModelViewProjectionMatrix * vec4(gl_Vertex.xyz, 1.0); 
 	gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
 	
+	vary_texture_index = gl_Vertex.w;
 	vary_normal = normalize(gl_NormalMatrix * gl_Normal);
 
 	gl_FrontColor = gl_Color;
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);
-	
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightV.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightV.glsl
index 6c38d220e2..6890360c56 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightV.glsl
@@ -14,30 +14,23 @@ vec3 atmosAffectDirectionalLight(float lightIntensity);
 vec3 scaleDownLight(vec3 light);
 vec3 scaleUpLight(vec3 light);
 
-varying vec3 vary_ambient;
-varying vec3 vary_directional;
-varying vec3 vary_normal;
-varying vec3 vary_fragcoord;
-uniform float near_clip;
-varying vec4 vary_position;
+varying float vary_texture_index;
 
 void main()
 {
 	//transform vertex
-	gl_Position = ftransform(); 
+	vec4 vert = vec4(gl_Vertex.xyz, 1.0);
+	vary_texture_index = gl_Vertex.w;
+
+	gl_Position = gl_ModelViewProjectionMatrix*vert; 
 	
 	gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
 	
-	vec4 pos = (gl_ModelViewMatrix * gl_Vertex);
-	vary_position = pos;
-		
+	vec4 pos = (gl_ModelViewMatrix * vert);
+				
 	calcAtmospherics(pos.xyz);
 	
 	gl_FrontColor = gl_Color;
 
 	gl_FogFragCoord = pos.z;
-	
-	pos = gl_ModelViewProjectionMatrix * gl_Vertex;
-	vary_fragcoord.xyz = pos.xyz + vec3(0,0,near_clip);
-	
 }