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Separated PMA setting into two settings.

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This allows PMA blending modes to be used without color PMA being applied, for when the shader applies PMA.
This commit is contained in:
Nathan Sweet 2020-07-19 15:45:19 +02:00
parent 11fdba7000
commit ad5a64bb9e
1 changed files with 35 additions and 18 deletions
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53
spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/SkeletonRenderer.java
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@ -50,7 +50,7 @@ import com.esotericsoftware.spine.utils.TwoColorPolygonBatch;
public class SkeletonRenderer { public class SkeletonRenderer {
static private final short[] quadTriangles = {0, 1, 2, 2, 3, 0}; static private final short[] quadTriangles = {0, 1, 2, 2, 3, 0};
private boolean premultipliedAlpha; private boolean pmaColors, pmaBlendModes;
private final FloatArray vertices = new FloatArray(32); private final FloatArray vertices = new FloatArray(32);
private final SkeletonClipping clipper = new SkeletonClipping(); private final SkeletonClipping clipper = new SkeletonClipping();
private @Null VertexEffect vertexEffect; private @Null VertexEffect vertexEffect;
@ -83,7 +83,7 @@ public class SkeletonRenderer {
VertexEffect vertexEffect = this.vertexEffect; VertexEffect vertexEffect = this.vertexEffect;
if (vertexEffect != null) vertexEffect.begin(skeleton); if (vertexEffect != null) vertexEffect.begin(skeleton);
boolean premultipliedAlpha = this.premultipliedAlpha; boolean pmaColors = this.pmaColors, pmaBlendModes = this.pmaBlendModes;
BlendMode blendMode = null; BlendMode blendMode = null;
float[] vertices = this.vertices.items; float[] vertices = this.vertices.items;
Color skeletonColor = skeleton.color; Color skeletonColor = skeleton.color;
@ -98,16 +98,16 @@ public class SkeletonRenderer {
region.computeWorldVertices(slot.getBone(), vertices, 0, 5); region.computeWorldVertices(slot.getBone(), vertices, 0, 5);
Color color = region.getColor(), slotColor = slot.getColor(); Color color = region.getColor(), slotColor = slot.getColor();
float alpha = a * slotColor.a * color.a * 255; float alpha = a * slotColor.a * color.a * 255;
float multiplier = premultipliedAlpha ? alpha : 255; float multiplier = pmaColors ? alpha : 255;
BlendMode slotBlendMode = slot.data.getBlendMode(); BlendMode slotBlendMode = slot.data.getBlendMode();
if (slotBlendMode != blendMode) { if (slotBlendMode != blendMode) {
if (slotBlendMode == BlendMode.additive && premultipliedAlpha) { if (slotBlendMode == BlendMode.additive && pmaBlendModes) {
slotBlendMode = BlendMode.normal; slotBlendMode = BlendMode.normal;
alpha = 0; alpha = 0;
} }
blendMode = slotBlendMode; blendMode = slotBlendMode;
batch.setBlendFunction(blendMode.getSource(premultipliedAlpha), blendMode.getDest()); batch.setBlendFunction(blendMode.getSource(pmaBlendModes), blendMode.getDest());
} }
float c = NumberUtils.intToFloatColor((int)alpha << 24 // float c = NumberUtils.intToFloatColor((int)alpha << 24 //
@ -159,7 +159,7 @@ public class SkeletonRenderer {
VertexEffect vertexEffect = this.vertexEffect; VertexEffect vertexEffect = this.vertexEffect;
if (vertexEffect != null) vertexEffect.begin(skeleton); if (vertexEffect != null) vertexEffect.begin(skeleton);
boolean premultipliedAlpha = this.premultipliedAlpha; boolean pmaColors = this.pmaColors, pmaBlendModes = this.pmaBlendModes;
BlendMode blendMode = null; BlendMode blendMode = null;
int verticesLength = 0; int verticesLength = 0;
float[] vertices = null, uvs = null; float[] vertices = null, uvs = null;
@ -207,16 +207,16 @@ public class SkeletonRenderer {
if (texture != null) { if (texture != null) {
Color slotColor = slot.getColor(); Color slotColor = slot.getColor();
float alpha = a * slotColor.a * color.a * 255; float alpha = a * slotColor.a * color.a * 255;
float multiplier = premultipliedAlpha ? alpha : 255; float multiplier = pmaColors ? alpha : 255;
BlendMode slotBlendMode = slot.data.getBlendMode(); BlendMode slotBlendMode = slot.data.getBlendMode();
if (slotBlendMode != blendMode) { if (slotBlendMode != blendMode) {
if (slotBlendMode == BlendMode.additive && premultipliedAlpha) { if (slotBlendMode == BlendMode.additive && pmaBlendModes) {
slotBlendMode = BlendMode.normal; slotBlendMode = BlendMode.normal;
alpha = 0; alpha = 0;
} }
blendMode = slotBlendMode; blendMode = slotBlendMode;
batch.setBlendFunction(blendMode.getSource(premultipliedAlpha), blendMode.getDest()); batch.setBlendFunction(blendMode.getSource(pmaBlendModes), blendMode.getDest());
} }
float c = NumberUtils.intToFloatColor((int)alpha << 24 // float c = NumberUtils.intToFloatColor((int)alpha << 24 //
@ -281,8 +281,8 @@ public class SkeletonRenderer {
VertexEffect vertexEffect = this.vertexEffect; VertexEffect vertexEffect = this.vertexEffect;
if (vertexEffect != null) vertexEffect.begin(skeleton); if (vertexEffect != null) vertexEffect.begin(skeleton);
boolean premultipliedAlpha = this.premultipliedAlpha; boolean pmaColors = this.pmaColors, pmaBlendModes = this.pmaBlendModes;
batch.setPremultipliedAlpha(premultipliedAlpha); batch.setPremultipliedAlpha(pmaColors);
BlendMode blendMode = null; BlendMode blendMode = null;
int verticesLength = 0; int verticesLength = 0;
float[] vertices = null, uvs = null; float[] vertices = null, uvs = null;
@ -330,16 +330,16 @@ public class SkeletonRenderer {
if (texture != null) { if (texture != null) {
Color lightColor = slot.getColor(); Color lightColor = slot.getColor();
float alpha = a * lightColor.a * color.a * 255; float alpha = a * lightColor.a * color.a * 255;
float multiplier = premultipliedAlpha ? alpha : 255; float multiplier = pmaColors ? alpha : 255;
BlendMode slotBlendMode = slot.data.getBlendMode(); BlendMode slotBlendMode = slot.data.getBlendMode();
if (slotBlendMode != blendMode) { if (slotBlendMode != blendMode) {
if (slotBlendMode == BlendMode.additive && premultipliedAlpha) { if (slotBlendMode == BlendMode.additive && pmaBlendModes) {
slotBlendMode = BlendMode.normal; slotBlendMode = BlendMode.normal;
alpha = 0; alpha = 0;
} }
blendMode = slotBlendMode; blendMode = slotBlendMode;
batch.setBlendFunction(blendMode.getSource(premultipliedAlpha), blendMode.getDest()); batch.setBlendFunction(blendMode.getSource(pmaBlendModes), blendMode.getDest());
} }
float red = r * color.r * multiplier; float red = r * color.r * multiplier;
@ -440,12 +440,29 @@ public class SkeletonRenderer {
} }
} }
public boolean getPremultipliedAlpha () { public boolean getPremultipliedAlphaColors () {
return premultipliedAlpha; return pmaColors;
} }
public void setPremultipliedAlpha (boolean premultipliedAlpha) { /** If true, colors will be multiplied by alpha before being sent to the GPU. Set to false if premultiplied alpha is not being
this.premultipliedAlpha = premultipliedAlpha; * used or if the shader does the multiplication. Default is false. */
public void setPremultipliedAlphaColors (boolean pmaColors) {
this.pmaColors = pmaColors;
}
public boolean getPremultipliedAlphaBlendModes () {
return pmaBlendModes;
}
/** If true, blend modes for premultiplied alpha will be used. Set to false if premultiplied alpha is not being used. Default
* is false. */
public void setPremultipliedAlphaBlendModes (boolean pmaBlendModes) {
this.pmaBlendModes = pmaBlendModes;
}
public void setPremultipliedAlpha (boolean pmaColorsAndBlendModes) {
pmaColors = pmaColorsAndBlendModes;
pmaBlendModes = pmaColorsAndBlendModes;
} }
public @Null VertexEffect getVertexEffect () { public @Null VertexEffect getVertexEffect () {