-
Notifications
You must be signed in to change notification settings - Fork 1.2k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
27 changed files
with
1,986 additions
and
967 deletions.
There are no files selected for viewing
Large diffs are not rendered by default.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| The file "dfg.raw" is a raw image file of dimensions 64x64 with two color | ||
| channels stored in 16-bit floats. It can be regenerated by using the script | ||
| "generate_dfg_texture.py" provided in the ARCore SDK under /tools/. |
Binary file not shown.
118 changes: 118 additions & 0 deletions
118
samples/hello_ar_java/app/src/main/assets/shaders/cubemap_filter.frag
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| #version 300 es | ||
| /* | ||
| * Copyright 2020 Google LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| precision mediump float; | ||
|
|
||
| // The number of mipmap levels in the cubemap is equal to the number of | ||
| // roughness levels that we precalculate for filtering the cubemap for roughness | ||
| // in real-time. | ||
| const int kNumberOfRoughnessLevels = NUMBER_OF_MIPMAP_LEVELS; | ||
|
|
||
| // The number of importance samples to use for roughness filtering of the | ||
| // cubemap. | ||
| const int kNumberOfImportanceSamples = NUMBER_OF_IMPORTANCE_SAMPLES; | ||
|
|
||
| struct ImportanceSampleCacheEntry { | ||
| vec3 direction; // Direction to sample in tangent space | ||
| float contribution; // Weighted contribution of the sample's radiance | ||
| float level; // The mipmap level to sample from the cubemap. Can be | ||
| // in-between integer levels for trilinear filtering. | ||
| }; | ||
|
|
||
| struct ImportanceSampleCache { | ||
| int number_of_entries; | ||
| ImportanceSampleCacheEntry entries[kNumberOfImportanceSamples]; | ||
| }; | ||
|
|
||
| // This array's length is one less than the number of roughness levels since the | ||
| // first roughness level can be skipped. | ||
| uniform ImportanceSampleCache | ||
| u_ImportanceSampleCaches[kNumberOfRoughnessLevels - 1]; | ||
|
|
||
| // The source radiance cubemap to be filtered. | ||
| uniform samplerCube u_Cubemap; | ||
|
|
||
| // The roughness level that we are filtering for. | ||
| uniform int u_RoughnessLevel; | ||
|
|
||
| in vec2 v_Position; | ||
|
|
||
| #ifdef PX_LOCATION | ||
| layout(location = PX_LOCATION) out vec4 o_FragColorPX; | ||
| #endif | ||
| #ifdef NX_LOCATION | ||
| layout(location = NX_LOCATION) out vec4 o_FragColorNX; | ||
| #endif | ||
| #ifdef PY_LOCATION | ||
| layout(location = PY_LOCATION) out vec4 o_FragColorPY; | ||
| #endif | ||
| #ifdef NY_LOCATION | ||
| layout(location = NY_LOCATION) out vec4 o_FragColorNY; | ||
| #endif | ||
| #ifdef PZ_LOCATION | ||
| layout(location = PZ_LOCATION) out vec4 o_FragColorPZ; | ||
| #endif | ||
| #ifdef NZ_LOCATION | ||
| layout(location = NZ_LOCATION) out vec4 o_FragColorNZ; | ||
| #endif | ||
|
|
||
| vec4 Filter(const vec3 n) { | ||
| if (u_RoughnessLevel == 0) { | ||
| // Roughness level 0 is just a straight copy. | ||
| return vec4(textureLod(u_Cubemap, n, 0.0).rgb, 1.0); | ||
| } | ||
|
|
||
| vec3 up = abs(n.z) < 0.9999 ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0); | ||
|
|
||
| mat3 tangentToWorld; | ||
| tangentToWorld[0] = normalize(cross(up, n)); | ||
| tangentToWorld[1] = cross(n, tangentToWorld[0]); | ||
| tangentToWorld[2] = n; | ||
|
|
||
| ImportanceSampleCache cache = u_ImportanceSampleCaches[u_RoughnessLevel - 1]; | ||
| vec3 radiance = vec3(0.0); | ||
| for (int i = 0; i < cache.number_of_entries; ++i) { | ||
| ImportanceSampleCacheEntry entry = cache.entries[i]; | ||
| radiance += | ||
| textureLod(u_Cubemap, tangentToWorld * entry.direction, entry.level) | ||
| .rgb * | ||
| entry.contribution; | ||
| } | ||
| return vec4(radiance, 1.0); | ||
| } | ||
|
|
||
| void main() { | ||
| float u = v_Position.x; | ||
| float v = v_Position.y; | ||
| #ifdef PX_LOCATION | ||
| o_FragColorPX = Filter(normalize(vec3(+1, -v, -u))); | ||
| #endif | ||
| #ifdef NX_LOCATION | ||
| o_FragColorNX = Filter(normalize(vec3(-1, -v, +u))); | ||
| #endif | ||
| #ifdef PY_LOCATION | ||
| o_FragColorPY = Filter(normalize(vec3(+u, +1, +v))); | ||
| #endif | ||
| #ifdef NY_LOCATION | ||
| o_FragColorNY = Filter(normalize(vec3(+u, -1, -v))); | ||
| #endif | ||
| #ifdef PZ_LOCATION | ||
| o_FragColorPZ = Filter(normalize(vec3(+u, -v, +1))); | ||
| #endif | ||
| #ifdef NZ_LOCATION | ||
| o_FragColorNZ = Filter(normalize(vec3(-u, -v, -1))); | ||
| #endif | ||
| } |
25 changes: 25 additions & 0 deletions
25
samples/hello_ar_java/app/src/main/assets/shaders/cubemap_filter.vert
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| #version 300 es | ||
| /* | ||
| * Copyright 2020 Google LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| layout(location = 0) in vec4 a_Position; | ||
|
|
||
| out vec2 v_Position; | ||
|
|
||
| void main() { | ||
| gl_Position = a_Position; | ||
| v_Position = a_Position.xy; | ||
| } |
Oops, something went wrong.