Eevee: Prepare for fullres tracing

3 files changed, 6 insertions, 6 deletions

diff --git a/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl b/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl
index fae310be90b..bda3c648bb6 100644
--- a/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl
@@ -60,8 +60,9 @@ vec2 get_ao_dir(float jitter)
 
 void get_max_horizon_grouped(vec4 co1, vec4 co2, vec3 x, float lod, inout float h)
 {
-	co1 *= mipRatio[int(lod + 1.0)].xyxy; /* +1 because we are using half res top level */
-	co2 *= mipRatio[int(lod + 1.0)].xyxy; /* +1 because we are using half res top level */
+	int mip = int(lod) + hizMipOffset;
+	co1 *= mipRatio[mip].xyxy;
+	co2 *= mipRatio[mip].xyxy;
 
 	float depth1 = textureLod(maxzBuffer, co1.xy, floor(lod)).r;
 	float depth2 = textureLod(maxzBuffer, co1.zw, floor(lod)).r;
diff --git a/source/blender/draw/engines/eevee/shaders/common_uniforms_lib.glsl b/source/blender/draw/engines/eevee/shaders/common_uniforms_lib.glsl
index d6abb7dc175..1666d766225 100644
--- a/source/blender/draw/engines/eevee/shaders/common_uniforms_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/common_uniforms_lib.glsl
@@ -36,6 +36,8 @@ layout(std140) uniform common_block {
 	int prbIrradianceVisSize;
 	float prbLodCubeMax;
 	float prbLodPlanarMax;
+	/* Misc*/
+	int hizMipOffset;
 };
 
 /* aoParameters */
diff --git a/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl b/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
index d035a4329b1..7dd460004ae 100644
--- a/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
@@ -9,10 +9,7 @@ float sample_depth(vec2 uv, int index, float lod)
 	else {
 #endif
 		/* Correct UVs for mipmaping mis-alignment */
-		/* + 1.0 because we are using half res maxzBuffer
-		 * and mipRatio starts at on mip 0. */
-		int mip = int(lod + 1.0);
-		uv *= mipRatio[mip];
+		uv *= mipRatio[int(lod) + hizMipOffset];
 		return textureLod(maxzBuffer, uv, lod).r;
 #ifdef PLANAR_PROBE_RAYTRACE
 	}