SL-18485: Render GLTF materials with extension KHR_texture_transform with approprate texture transforms

4 files changed, 80 insertions, 73 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl
index d0d76fd0cb..19bca098e8 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl
@@ -44,29 +44,32 @@ uniform mat4 modelview_projection_matrix;
     VARYING vec3 vary_position;
 #endif
 
-uniform mat4 texture_matrix0;
+uniform mat3 texture_basecolor_matrix;
+uniform mat3 texture_normal_matrix;
+uniform mat3 texture_metallic_roughness_matrix;
+uniform mat3 texture_emissive_matrix;
 
 #ifdef HAS_SUN_SHADOW
-VARYING vec3 vary_fragcoord;
+out vec3 vary_fragcoord;
 uniform float near_clip;
 #endif
 
-ATTRIBUTE vec3 position;
-ATTRIBUTE vec4 diffuse_color;
-ATTRIBUTE vec3 normal;
-ATTRIBUTE vec4 tangent;
-ATTRIBUTE vec2 texcoord0;
-ATTRIBUTE vec2 texcoord1;
-ATTRIBUTE vec2 texcoord2;
-
-
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-VARYING vec2 vary_texcoord1;
-VARYING vec2 vary_texcoord2;
-VARYING vec3 vary_normal;
-VARYING vec3 vary_tangent;
+in vec3 position;
+in vec4 diffuse_color;
+in vec3 normal;
+in vec4 tangent;
+in vec2 texcoord0;
+
+out vec2 basecolor_texcoord;
+out vec2 normal_texcoord;
+out vec2 metallic_roughness_texcoord;
+out vec2 emissive_texcoord;
+
+out vec4 vertex_color;
+
+out vec3 vary_tangent;
 flat out float vary_sign;
+out vec3 vary_normal;
 
 
 void main()
@@ -89,9 +92,10 @@ void main()
     vary_fragcoord.xyz = vert.xyz + vec3(0,0,near_clip);
 #endif
 
-	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
-	vary_texcoord1 = (texture_matrix0 * vec4(texcoord1,0,1)).xy;
-	vary_texcoord2 = (texture_matrix0 * vec4(texcoord2,0,1)).xy;
+	basecolor_texcoord = (texture_basecolor_matrix * vec3(texcoord0,1)).xy;
+	normal_texcoord = (texture_normal_matrix * vec3(texcoord0,1)).xy;
+	metallic_roughness_texcoord = (texture_metallic_roughness_matrix * vec3(texcoord0,1)).xy;
+	emissive_texcoord = (texture_emissive_matrix * vec3(texcoord0,1)).xy;
 
 #ifdef HAS_SKIN
 	vec3 n = (mat*vec4(normal.xyz+position.xyz,1.0)).xyz-pos.xyz;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
index 7376e9eb47..39419e9d78 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
@@ -36,15 +36,16 @@ uniform sampler2D specularMap; // Packed: Occlusion, Metal, Roughness
 
 out vec4 frag_data[4];
 
-VARYING vec3 vary_position;
-VARYING vec4 vertex_color;
-VARYING vec3 vary_normal;
-VARYING vec3 vary_tangent;
+in vec3 vary_position;
+in vec4 vertex_color;
+in vec3 vary_normal;
+in vec3 vary_tangent;
 flat in float vary_sign;
 
-VARYING vec2 vary_texcoord0;
-VARYING vec2 vary_texcoord1;
-VARYING vec2 vary_texcoord2;
+in vec2 basecolor_texcoord;
+in vec2 normal_texcoord;
+in vec2 metallic_roughness_texcoord;
+in vec2 emissive_texcoord;
 
 uniform float minimum_alpha; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
 
@@ -56,19 +57,16 @@ uniform mat3 normal_matrix;
 
 void main()
 {
-// IF .mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
-//    vec3 col = vertex_color.rgb * diffuseLookup(vary_texcoord0.xy).rgb;
-// else
-    vec4 albedo = texture2D(diffuseMap, vary_texcoord0.xy).rgba;
-    if (albedo.a < minimum_alpha)
+    vec4 basecolor = texture2D(diffuseMap, basecolor_texcoord.xy).rgba;
+    if (basecolor.a < minimum_alpha)
     {
         discard;
     }
 
-    vec3 col = vertex_color.rgb * srgb_to_linear(albedo.rgb);
+    vec3 col = vertex_color.rgb * srgb_to_linear(basecolor.rgb);
 
     // from mikktspace.com
-    vec3 vNt = texture2D(bumpMap, vary_texcoord1.xy).xyz*2.0-1.0;
+    vec3 vNt = texture2D(bumpMap, normal_texcoord.xy).xyz*2.0-1.0;
     float sign = vary_sign;
     vec3 vN = vary_normal;
     vec3 vT = vary_tangent.xyz;
@@ -81,13 +79,13 @@ void main()
     //   occlusion 1.0
     //   roughness 0.0
     //   metal     0.0
-    vec3 spec = texture2D(specularMap, vary_texcoord2.xy).rgb;
+    vec3 spec = texture2D(specularMap, metallic_roughness_texcoord.xy).rgb;
     
     spec.g *= roughnessFactor;
     spec.b *= metallicFactor;
 
     vec3 emissive = emissiveColor;
-    emissive *= srgb_to_linear(texture2D(emissiveMap, vary_texcoord0.xy).rgb);
+    emissive *= srgb_to_linear(texture2D(emissiveMap, emissive_texcoord.xy).rgb);
 
     tnorm *= gl_FrontFacing ? 1.0 : -1.0;
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueV.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueV.glsl
index 5573c02a60..25bf19b4ec 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueV.glsl
@@ -37,25 +37,27 @@ uniform mat3 normal_matrix;
 uniform mat4 modelview_projection_matrix;
 #endif
 
-uniform mat4 texture_matrix0;
+uniform mat3 texture_basecolor_matrix;
+uniform mat3 texture_normal_matrix;
+uniform mat3 texture_metallic_roughness_matrix;
+uniform mat3 texture_emissive_matrix;
 
-ATTRIBUTE vec3 position;
-ATTRIBUTE vec4 diffuse_color;
-ATTRIBUTE vec3 normal;
-ATTRIBUTE vec4 tangent;
-ATTRIBUTE vec2 texcoord0;
-ATTRIBUTE vec2 texcoord1;
-ATTRIBUTE vec2 texcoord2;
+in vec3 position;
+in vec4 diffuse_color;
+in vec3 normal;
+in vec4 tangent;
+in vec2 texcoord0;
 
-VARYING vec2 vary_texcoord0;
-VARYING vec2 vary_texcoord1;
-VARYING vec2 vary_texcoord2;
+out vec2 basecolor_texcoord;
+out vec2 normal_texcoord;
+out vec2 metallic_roughness_texcoord;
+out vec2 emissive_texcoord;
  
-VARYING vec4 vertex_color;
+out vec4 vertex_color;
 
-VARYING vec3 vary_tangent;
+out vec3 vary_tangent;
 flat out float vary_sign;
-VARYING vec3 vary_normal;
+out vec3 vary_normal;
 
 void main()
 {
@@ -73,9 +75,11 @@ void main()
 	gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0); 
 #endif
 	
-	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
-	vary_texcoord1 = (texture_matrix0 * vec4(texcoord1,0,1)).xy;
-	vary_texcoord2 = (texture_matrix0 * vec4(texcoord2,0,1)).xy;
+	basecolor_texcoord = (texture_basecolor_matrix * vec3(texcoord0,1)).xy;
+	normal_texcoord = (texture_normal_matrix * vec3(texcoord0,1)).xy;
+	metallic_roughness_texcoord = (texture_metallic_roughness_matrix * vec3(texcoord0,1)).xy;
+	emissive_texcoord = (texture_emissive_matrix * vec3(texcoord0,1)).xy;
+
 #ifdef HAS_SKIN
 	vec3 n = (mat*vec4(normal.xyz+position.xyz,1.0)).xyz-pos.xyz;
 	vec3 t = (mat*vec4(tangent.xyz+position.xyz,1.0)).xyz-pos.xyz;
diff --git a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
index b39f834e41..6500c4bb1f 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
@@ -45,17 +45,21 @@ uniform vec3 moon_dir;
 out vec4 frag_color;
 
 #ifdef HAS_SUN_SHADOW
-  VARYING vec3 vary_fragcoord;
+  in vec3 vary_fragcoord;
   uniform vec2 screen_res;
 #endif
 
-VARYING vec3 vary_position;
-VARYING vec4 vertex_color;
-VARYING vec2 vary_texcoord0;
-VARYING vec2 vary_texcoord1;
-VARYING vec2 vary_texcoord2;
-VARYING vec3 vary_normal;
-VARYING vec3 vary_tangent;
+in vec3 vary_position;
+
+in vec2 basecolor_texcoord;
+in vec2 normal_texcoord;
+in vec2 metallic_roughness_texcoord;
+in vec2 emissive_texcoord;
+
+in vec4 vertex_color;
+
+in vec3 vary_normal;
+in vec3 vary_tangent;
 flat in float vary_sign;
 
 
@@ -155,21 +159,18 @@ void main()
 
     waterClip(pos);
 
-// IF .mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
-//    vec3 col = vertex_color.rgb * diffuseLookup(vary_texcoord0.xy).rgb;
-// else
-    vec4 albedo = texture(diffuseMap, vary_texcoord0.xy).rgba;
-    albedo.rgb = srgb_to_linear(albedo.rgb);
+    vec4 basecolor = texture(diffuseMap, basecolor_texcoord.xy).rgba;
+    basecolor.rgb = srgb_to_linear(basecolor.rgb);
 #ifdef HAS_ALPHA_MASK
-    if (albedo.a < minimum_alpha)
+    if (basecolor.a < minimum_alpha)
     {
         discard;
     }
 #endif
 
-    vec3 baseColor = vertex_color.rgb * albedo.rgb;
+    vec3 col = vertex_color.rgb * basecolor.rgb;
 
-    vec3 vNt = texture(bumpMap, vary_texcoord1.xy).xyz*2.0-1.0;
+    vec3 vNt = texture(bumpMap, normal_texcoord.xy).xyz*2.0-1.0;
     float sign = vary_sign;
     vec3 vN = vary_normal;
     vec3 vT = vary_tangent.xyz;
@@ -192,7 +193,7 @@ void main()
     scol = sampleDirectionalShadow(pos.xyz, norm.xyz, frag);
 #endif
 
-    vec3 orm = texture(specularMap, vary_texcoord2.xy).rgb; //orm is packed into "emissiveRect" to keep the data in linear color space
+    vec3 orm = texture(specularMap, metallic_roughness_texcoord.xy).rgb; //orm is packed into "emissiveRect" to keep the data in linear color space
 
     float perceptualRoughness = orm.g * roughnessFactor;
     float metallic = orm.b * metallicFactor;
@@ -201,7 +202,7 @@ void main()
     // emissiveColor is the emissive color factor from GLTF and is already in linear space
     vec3 colorEmissive = emissiveColor;
     // emissiveMap here is a vanilla RGB texture encoded as sRGB, manually convert to linear
-    colorEmissive *= srgb_to_linear(texture2D(emissiveMap, vary_texcoord0.xy).rgb);
+    colorEmissive *= srgb_to_linear(texture2D(emissiveMap, emissive_texcoord.xy).rgb);
 
     // PBR IBL
     float gloss      = 1.0 - perceptualRoughness;
@@ -214,7 +215,7 @@ void main()
 
     vec3 diffuseColor;
     vec3 specularColor;
-    calcDiffuseSpecular(baseColor.rgb, metallic, diffuseColor, specularColor);
+    calcDiffuseSpecular(col.rgb, metallic, diffuseColor, specularColor);
 
     vec3 v = -normalize(pos.xyz);
     color = pbrBaseLight(diffuseColor, specularColor, metallic, v, norm.xyz, perceptualRoughness, light_dir, sunlit, scol, radiance, irradiance, colorEmissive, ao, additive, atten);
@@ -235,5 +236,5 @@ void main()
     color.rgb += light.rgb;
 
     
-    frag_color = vec4(color.rgb,albedo.a * vertex_color.a);
+    frag_color = vec4(color.rgb,basecolor.a * vertex_color.a);
 }