Android/frameworks_base
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Transform shadow casters correctly in 3d

Browse Source 
Change-Id: I11067c5aa8c749089b6ee163ddafa91865cc0d9f
This commit is contained in:
Chris Craik
2014-01-16 16:21:10 -08:00
parent c46809e997
commit 7b3dfa4d13
1 changed files with 9 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
libs/hwui/ShadowTessellator.cpp
View File

@@ -45,28 +45,23 @@ static inline T max(T a, T b) {
*/
void ShadowTessellator::generateCasterPolygon(float width, float height,
const mat4& casterTransform, int vertexCount, Vector3* polygon) {
Vector3 pivot(width / 2, height / 2, 0.0f);
casterTransform.mapPoint3d(pivot);
// TODO: The zScaleFactor need to be mapped to the screen.
float zScaleFactor = 0.5;
Rect blockRect(pivot.x - width * zScaleFactor, pivot.y - height * zScaleFactor,
pivot.x + width * zScaleFactor, pivot.y + height * zScaleFactor);
// Generate the caster's polygon from the rect.
Rect blockRect(0, 0, width, height);
polygon[0].x = blockRect.left;
polygon[0].y = blockRect.top;
polygon[0].z = pivot.z;
polygon[0].z = 0;
polygon[1].x = blockRect.right;
polygon[1].y = blockRect.top;
polygon[1].z = pivot.z;
polygon[1].z = 0;
polygon[2].x = blockRect.right;
polygon[2].y = blockRect.bottom;
polygon[2].z = pivot.z;
polygon[2].z = 0;
polygon[3].x = blockRect.left;
polygon[3].y = blockRect.bottom;
polygon[3].z = pivot.z;
polygon[3].z = 0;
casterTransform.mapPoint3d(polygon[0]);
casterTransform.mapPoint3d(polygon[1]);
casterTransform.mapPoint3d(polygon[2]);
casterTransform.mapPoint3d(polygon[3]);
}
void ShadowTessellator::tessellateAmbientShadow(float width, float height,