diff --git a/source/blender/draw/engines/eevee/eevee_motion_blur.c b/source/blender/draw/engines/eevee/eevee_motion_blur.c
index f60c2661cb0..fe3705f1fbb 100644
--- a/source/blender/draw/engines/eevee/eevee_motion_blur.c
+++ b/source/blender/draw/engines/eevee/eevee_motion_blur.c
@@ -490,7 +490,7 @@ void EEVEE_motion_blur_swap_data(EEVEE_Data *vedata)
   BLI_assert((effects->enabled_effects & EFFECT_MOTION_BLUR) != 0);
 
   /* Camera Data. */
-  effects->motion_blur.camera[MB_PREV] = effects->motion_blur.camera[MB_CURR];
+  effects->motion_blur.camera[MB_PREV] = effects->motion_blur.camera[MB_NEXT];
 
   /* Object Data. */
   for (BLI_ghashIterator_init(&ghi, effects->motion_blur.object);
diff --git a/source/blender/draw/engines/eevee/shaders/effect_velocity_resolve_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_velocity_resolve_frag.glsl
index 145939cefb2..9182171bab4 100644
--- a/source/blender/draw/engines/eevee/shaders/effect_velocity_resolve_frag.glsl
+++ b/source/blender/draw/engines/eevee/shaders/effect_velocity_resolve_frag.glsl
@@ -13,16 +13,19 @@ void main()
 {
   /* Extract pixel motion vector from camera movement. */
   ivec2 texel = ivec2(gl_FragCoord.xy);
-  vec2 uv = gl_FragCoord.xy / vec2(textureSize(depthBuffer, 0).xy);
+  vec2 uv_curr = gl_FragCoord.xy / vec2(textureSize(depthBuffer, 0).xy);
 
   float depth = texelFetch(depthBuffer, texel, 0).r;
 
-  vec3 world_position = project_point(currViewProjMatrixInv, vec3(uv, depth) * 2.0 - 1.0);
-  vec2 uv_prev = project_point(prevViewProjMatrix, world_position).xy * 0.5 + 0.5;
-  vec2 uv_next = project_point(nextViewProjMatrix, world_position).xy * 0.5 + 0.5;
+  uv_curr = uv_curr * 2.0 - 1.0;
+  depth = depth * 2.0 - 1.0;
 
-  outData.xy = uv_prev - uv;
-  outData.zw = uv_next - uv;
+  vec3 world_position = project_point(currViewProjMatrixInv, vec3(uv_curr, depth));
+  vec2 uv_prev = project_point(prevViewProjMatrix, world_position).xy;
+  vec2 uv_next = project_point(nextViewProjMatrix, world_position).xy;
+
+  outData.xy = uv_prev - uv_curr;
+  outData.zw = uv_next - uv_curr;
 
   /* Encode to unsigned normalized 16bit texture. */
   outData = outData * 0.5 + 0.5;
diff --git a/source/blender/gpu/intern/gpu_framebuffer_private.hh b/source/blender/gpu/intern/gpu_framebuffer_private.hh
index 87f0f3823e6..7afa56bfe3d 100644
--- a/source/blender/gpu/intern/gpu_framebuffer_private.hh
+++ b/source/blender/gpu/intern/gpu_framebuffer_private.hh
@@ -100,10 +100,10 @@ class FrameBuffer {
   /** Debug name. */
   char name_[DEBUG_NAME_LEN];
   /** Frame-buffer state. */
-  int viewport_[4];
-  int scissor_[4];
+  int viewport_[4] = {0};
+  int scissor_[4] = {0};
   bool scissor_test_ = false;
-  bool dirty_state_;
+  bool dirty_state_ = true;
 
  public:
   FrameBuffer(const char *name);
diff --git a/source/blender/gpu/intern/gpu_immediate_private.hh b/source/blender/gpu/intern/gpu_immediate_private.hh
index e6c11120d7e..9fcbe2bdc0b 100644
--- a/source/blender/gpu/intern/gpu_immediate_private.hh
+++ b/source/blender/gpu/intern/gpu_immediate_private.hh
@@ -47,7 +47,7 @@ class Immediate {
 
   /** Current draw call specification. */
   GPUPrimType prim_type = GPU_PRIM_NONE;
-  GPUVertFormat vertex_format;
+  GPUVertFormat vertex_format = {};
   GPUShader *shader = NULL;
   /** Enforce strict vertex count (disabled when using immBeginAtMost). */
   bool strict_vertex_len = true;
diff --git a/source/blender/gpu/opengl/gl_state.cc b/source/blender/gpu/opengl/gl_state.cc
index 3a474da8b8e..5483f889a8a 100644
--- a/source/blender/gpu/opengl/gl_state.cc
+++ b/source/blender/gpu/opengl/gl_state.cc
@@ -437,6 +437,13 @@ void GLStateManager::set_blend(const eGPUBlend value)
     }
   }
 
+  if (value == GPU_BLEND_SUBTRACT) {
+    glBlendEquation(GL_FUNC_REVERSE_SUBTRACT);
+  }
+  else {
+    glBlendEquation(GL_FUNC_ADD);
+  }
+
   /* Always set the blend function. This avoid a rendering error when blending is disabled but
    * GPU_BLEND_CUSTOM was used just before and the frame-buffer is using more than 1 color target.
    */