DRW: Split ViewProjectionMatrix in order to increase precision

This also removes the need to compute the persmat and saves some memory
from the `ViewInfos` struct. This is needed to allow multiview support.

Initial testing found no major performance regression during vertex
heavy workload.

Test file: {F13610017}

Results:
| Platform | Master | Split Matrix|
| Linux + Mesa + AMD W6600 | 48 fps | 47 fps |
| Macbook Pro M1 | 50 fps | 51 fps |
| Linux + NVidia 1080Ti | 51 fps | 52 fps |
| Linux + Radeon Vega 64 | 25.6 fps | 26.7 fps |

Increased precision when far from origin:
{F13610024}

{F13610025}

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D16125

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/draw/engines/eevee_next/shaders/eevee_nodetree_lib.glsl b/source/blender/draw/engines/eevee_next/shaders/eevee_nodetree_lib.glsl
index dd047709afd..9422cb726b7 100644
--- a/source/blender/draw/engines/eevee_next/shaders/eevee_nodetree_lib.glsl
+++ b/source/blender/draw/engines/eevee_next/shaders/eevee_nodetree_lib.glsl
@@ -344,7 +344,7 @@ vec3 coordinate_screen(vec3 P)
   }
   else {
     /* TODO(fclem): Actual camera transform. */
-    window.xy = project_point(ViewProjectionMatrix, P).xy * 0.5 + 0.5;
+    window.xy = project_point(ProjectionMatrix, transform_point(ViewMatrix, P)).xy * 0.5 + 0.5;
     window.xy = window.xy * CameraTexCoFactors.xy + CameraTexCoFactors.zw;
   }
   return window;