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authorCosmic Linden <cosmic@lindenlab.com>2024-07-11 15:54:24 -0700
committerCosmic Linden <cosmic@lindenlab.com>2024-08-06 16:28:47 -0700
commit6aa9110b2ae346da1a396500cae1b41e8e2d5b75 (patch)
tree93c83eb1a2c515feef3e00c349f33e16e06d56d2 /indra/newview/app_settings/shaders/class1/interface
parentae2ff22542a5882616778ffab50612f8ad41b71e (diff)
secondlife/viewer#1883: Local-only PBR terrain paintmap with developer tools
Diffstat (limited to 'indra/newview/app_settings/shaders/class1/interface')
-rw-r--r--indra/newview/app_settings/shaders/class1/interface/pbrTerrainBakeF.glsl62
-rw-r--r--indra/newview/app_settings/shaders/class1/interface/pbrTerrainBakeV.glsl42
2 files changed, 104 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/interface/pbrTerrainBakeF.glsl b/indra/newview/app_settings/shaders/class1/interface/pbrTerrainBakeF.glsl
new file mode 100644
index 0000000000..cf20653a0f
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/pbrTerrainBakeF.glsl
@@ -0,0 +1,62 @@
+/**
+ * @file terrainBakeF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+struct TerrainMix
+{
+ vec4 weight;
+ int type;
+};
+
+TerrainMix get_terrain_mix_weights(float alpha1, float alpha2, float alphaFinal);
+
+uniform sampler2D alpha_ramp;
+
+// vary_texcoord* are used for terrain composition
+in vec4 vary_texcoord0;
+in vec4 vary_texcoord1;
+
+void main()
+{
+ TerrainMix tm;
+ float alpha1 = texture(alpha_ramp, vary_texcoord0.zw).a;
+ float alpha2 = texture(alpha_ramp,vary_texcoord1.xy).a;
+ float alphaFinal = texture(alpha_ramp, vary_texcoord1.zw).a;
+
+ tm = get_terrain_mix_weights(alpha1, alpha2, alphaFinal);
+
+ // tm.weight.x can be ignored. The paintmap saves a channel by not storing
+ // swatch 1, and assuming the weights of the 4 swatches add to 1.
+ // TERRAIN_PAINT_PRECISION emulates loss of precision at lower bit depth
+ // when a corresponding low-bit image format is not available. Because
+ // integral values at one depth cannot be precisely represented at another
+ // bit depth, rounding is required. To maximize numerical stability for
+ // future conversions, bit depth conversions should round to the nearest
+ // integer, not floor or ceil.
+ frag_color = max(vec4(round(tm.weight.yzw * TERRAIN_PAINT_PRECISION) / TERRAIN_PAINT_PRECISION, 1.0), vec4(0));
+}
diff --git a/indra/newview/app_settings/shaders/class1/interface/pbrTerrainBakeV.glsl b/indra/newview/app_settings/shaders/class1/interface/pbrTerrainBakeV.glsl
new file mode 100644
index 0000000000..fd150b54ad
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/interface/pbrTerrainBakeV.glsl
@@ -0,0 +1,42 @@
+/**
+ * @file pbrTerrainBakeV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+ * $/LicenseInfo$
+ */
+
+uniform mat4 modelview_projection_matrix;
+
+in vec3 position;
+in vec2 texcoord1;
+
+out vec4 vary_texcoord0;
+out vec4 vary_texcoord1;
+
+void main()
+{
+ gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
+ vec2 tc = texcoord1.xy;
+ vary_texcoord0.zw = tc.xy;
+ vary_texcoord1.xy = tc.xy-vec2(2.0, 0.0);
+ vary_texcoord1.zw = tc.xy-vec2(1.0, 0.0);
+}
+