SH-2908 Rework indexed texture rendering to use a uvec4 instead of a float for texture indices in the data stream. Also rework gl_FragColor overrides to not collide with some odd driver implementations.

8 files changed, 47 insertions, 31 deletions

diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
index 1179b212ae..373a6c157b 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor;
 #endif
 
 VARYING vec4 vertex_color;
@@ -125,6 +127,6 @@ void main()
 
 	color.rgb += diff.rgb * vary_pointlight_col.rgb;
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl
index 0df557f2aa..04460ea7c0 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor;
 #endif
 
 uniform sampler2DRectShadow shadowMap0;
@@ -138,6 +140,6 @@ void main()
 
 	color.rgb += diff.rgb * vary_pointlight_col.rgb;
 
-	gl_FragColor = color;	
+	frag_color = color;	
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl
index 331dbc7079..c50145f753 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/alphaNonIndexedNoColorF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor;
 #endif
 
 uniform sampler2DRectShadow shadowMap0;
@@ -137,6 +139,6 @@ void main()
 
 	color.rgb += diff.rgb * vary_pointlight_col.rgb;
 
-	gl_FragColor = color;
+	frag_color = color;
 }
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
index 14a683971a..7d78a888a5 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/multiSpotLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor;
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -253,6 +255,6 @@ void main()
 		}
 	}
 	
-	gl_FragColor.rgb = col;	
-	gl_FragColor.a = 0.0;
+	frag_color.rgb = col;	
+	frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
index 27ea77b5a2..f73163898e 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor;
 #endif
 
 uniform sampler2DRect diffuseRect;
@@ -330,6 +332,6 @@ void main()
 		col = diffuse.rgb;
 	}
 		
-	gl_FragColor.rgb = col;
-	gl_FragColor.a = bloom;
+	frag_color.rgb = col;
+	frag_color.a = bloom;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
index 31bd0c79da..7cc621b1f6 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/spotLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor;
 #endif
 
 VARYING vec4 vertex_color;
@@ -201,6 +203,6 @@ void main()
 		}
 	}
 	
-	gl_FragColor.rgb = col;	
-	gl_FragColor.a = 0.0;
+	frag_color.rgb = col;	
+	frag_color.a = 0.0;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
index 229c2f4b67..a92a9fc8e8 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
@@ -26,7 +26,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor;
 #endif
 
 //class 2, shadows, no SSAO
@@ -129,7 +131,7 @@ void main()
 	
 	/*if (pos.z == 0.0) // do nothing for sky *FIX: REMOVE THIS IF/WHEN THE POSITION MAP IS BEING USED AS A STENCIL
 	{
-		gl_FragColor = vec4(0.0); // doesn't matter
+		frag_color = vec4(0.0); // doesn't matter
 		return;
 	}*/
 	
@@ -198,19 +200,19 @@ void main()
 		shadow = 1.0;
 	}
 	
-	gl_FragColor[0] = shadow;
-	gl_FragColor[1] = 1.0;
+	frag_color[0] = shadow;
+	frag_color[1] = 1.0;
 	
 	spos = vec4(shadow_pos+norm*spot_shadow_offset, 1.0);
 	
 	//spotlight shadow 1
 	vec4 lpos = shadow_matrix[4]*spos;
-	gl_FragColor[2] = pcfShadow(shadowMap4, lpos, 0.8); 
+	frag_color[2] = pcfShadow(shadowMap4, lpos, 0.8); 
 	
 	//spotlight shadow 2
 	lpos = shadow_matrix[5]*spos;
-	gl_FragColor[3] = pcfShadow(shadowMap5, lpos, 0.8); 
+	frag_color[3] = pcfShadow(shadowMap5, lpos, 0.8); 
 
-	//gl_FragColor.rgb = pos.xyz;
-	//gl_FragColor.b = shadow;
+	//frag_color.rgb = pos.xyz;
+	//frag_color.b = shadow;
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
index 6b420833b9..45b8db5adc 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
@@ -25,7 +25,9 @@
 #extension GL_ARB_texture_rectangle : enable
 
 #ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor;
 #endif
 
 //class 2 -- shadows and SSAO
@@ -190,7 +192,7 @@ void main()
 	
 	/*if (pos.z == 0.0) // do nothing for sky *FIX: REMOVE THIS IF/WHEN THE POSITION MAP IS BEING USED AS A STENCIL
 	{
-		gl_FragColor = vec4(0.0); // doesn't matter
+		frag_color = vec4(0.0); // doesn't matter
 		return;
 	}*/
 	
@@ -259,19 +261,19 @@ void main()
 		shadow = 1.0;
 	}
 	
-	gl_FragColor[0] = shadow;
-	gl_FragColor[1] = calcAmbientOcclusion(pos, norm);
+	frag_color[0] = shadow;
+	frag_color[1] = calcAmbientOcclusion(pos, norm);
 	
 	spos = vec4(shadow_pos+norm*spot_shadow_offset, 1.0);
 	
 	//spotlight shadow 1
 	vec4 lpos = shadow_matrix[4]*spos;
-	gl_FragColor[2] = pcfShadow(shadowMap4, lpos, 0.8); 
+	frag_color[2] = pcfShadow(shadowMap4, lpos, 0.8); 
 	
 	//spotlight shadow 2
 	lpos = shadow_matrix[5]*spos;
-	gl_FragColor[3] = pcfShadow(shadowMap5, lpos, 0.8); 
+	frag_color[3] = pcfShadow(shadowMap5, lpos, 0.8); 
 
-	//gl_FragColor.rgb = pos.xyz;
-	//gl_FragColor.b = shadow;
+	//frag_color.rgb = pos.xyz;
+	//frag_color.b = shadow;
 }