Eevee: Cascaded Shadow Maps, follow up.

- Compute coarse bounding box of split frustum. Can be improved
- Make use of 4 cascade.
- View dependant glitches are fixed.
- Optimized shader code.

1 files changed, 3 insertions, 8 deletions

diff --git a/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl b/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
index b907adc2323..5762ca45b71 100644
--- a/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
@@ -59,16 +59,11 @@ struct ShadowMapData {
 
 struct ShadowCascadeData {
 	mat4 shadowmat[MAX_CASCADE_NUM];
-	vec4 bias_count;
-	float near[MAX_CASCADE_NUM];
-	float far[MAX_CASCADE_NUM];
+	/* arrays of float are not aligned so use vec4 */
+	vec4 split_distances;
+	vec4 bias;
 };
 
-/* convenience aliases */
-#define sh_cascade_bias   bias_count.x
-#define sh_cascade_count  bias_count.y
-
-
 struct AreaData {
 	vec3 corner[4];
 	float solid_angle;