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Merge pull request #205 from AnalyticalGraphicsInc/diffuse-alpha-same

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Short circuits the image combining if diffuse and alpha textures are the same
This commit is contained in:
Sean Lilley 2019-07-22 18:30:05 -04:00 committed by GitHub
commit 64a12c70b3
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 42 additions and 6 deletions
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16
lib/loadMtl.js
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@ -387,6 +387,10 @@ function createDiffuseAlphaTexture(diffuseTexture, alphaTexture, options) {
return diffuseTexture;
}
if (diffuseTexture.path === alphaTexture.path) {
return diffuseTexture;
}
if (!defined(diffuseTexture.pixels) || !defined(alphaTexture.pixels)) {
options.logger('Could not get decoded texture data for ' + diffuseTexture.path + ' or ' + alphaTexture.path + '. The material will be created without an alpha texture.');
return diffuseTexture;
@ -586,7 +590,7 @@ function createSpecularGlossinessMaterial(material, options) {
emissiveFactor = [1.0, 1.0, 1.0];
}
if (defined(diffuseTexture)) {
if (defined(diffuseAlphaTexture)) {
diffuseFactor = [1.0, 1.0, 1.0, 1.0];
}
@ -607,8 +611,8 @@ function createSpecularGlossinessMaterial(material, options) {
transparent = alpha < 1.0;
}
if (defined(diffuseTexture)) {
transparent = transparent || diffuseTexture.transparent;
if (defined(diffuseAlphaTexture)) {
transparent = transparent || diffuseAlphaTexture.transparent;
}
const doubleSided = transparent;
@ -658,7 +662,7 @@ function createMetallicRoughnessMaterial(material, options) {
emissiveFactor = [1.0, 1.0, 1.0];
}
if (defined(baseColorTexture)) {
if (defined(diffuseAlphaTexture)) {
baseColorFactor = [1.0, 1.0, 1.0, 1.0];
}
@ -679,8 +683,8 @@ function createMetallicRoughnessMaterial(material, options) {
transparent = alpha < 1.0;
}
if (defined(baseColorTexture)) {
transparent = transparent || baseColorTexture.transparent;
if (defined(diffuseAlphaTexture)) {
transparent = transparent || diffuseAlphaTexture.transparent;
}
const doubleSided = transparent;

32
specs/lib/loadMtlSpec.js
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@ -321,6 +321,22 @@ describe('loadMtl', () => {
expect(material.alphaMode).toBe('BLEND');
expect(material.doubleSided).toBe(true);
});
it('uses diffuse texture if diffuse and alpha are the same', async () => {
options.metallicRoughness = true;
// The transparent property will be modified so make a copy
const diffuseTextureCopy = await loadTexture(diffuseTexturePath, decodeOptions);
const material = loadMtl._createMaterial({
diffuseTexture : diffuseTextureCopy,
alphaTexture : diffuseTexture
}, options);
const pbr = material.pbrMetallicRoughness;
expect(pbr.baseColorTexture).toBe(diffuseTextureCopy);
expect(material.alphaMode).toBe('BLEND');
expect(material.doubleSided).toBe(true);
});
});
describe('specularGlossiness', () => {
@ -416,5 +432,21 @@ describe('loadMtl', () => {
expect(material.alphaMode).toBe('BLEND');
expect(material.doubleSided).toBe(true);
});
it('uses diffuse texture if diffuse and alpha are the same', async () => {
options.specularGlossiness = true;
// The transparent property will be modified so make a copy
const diffuseTextureCopy = await loadTexture(diffuseTexturePath, decodeOptions);
const material = loadMtl._createMaterial({
diffuseTexture : diffuseTextureCopy,
alphaTexture : diffuseTexture
}, options);
const pbr = material.extensions.KHR_materials_pbrSpecularGlossiness;
expect(pbr.diffuseTexture).toEqual(diffuseTextureCopy);
expect(material.alphaMode).toBe('BLEND');
expect(material.doubleSided).toBe(true);
});
});
});