diff --git a/src/gl/renderer/gl_postprocess.cpp b/src/gl/renderer/gl_postprocess.cpp
index c6535c2df..b8553bde1 100644
--- a/src/gl/renderer/gl_postprocess.cpp
+++ b/src/gl/renderer/gl_postprocess.cpp
@@ -154,8 +154,8 @@ void FGLRenderer::BloomScene()
 	{
 		const auto &level = mBuffers->BloomLevels[i];
 		const auto &next = mBuffers->BloomLevels[i + 1];
-		mBlurShader->BlurHorizontal(mVBO, blurAmount, sampleCount, level.VTexture, level.HFramebuffer, level.Width, level.Height);
-		mBlurShader->BlurVertical(mVBO, blurAmount, sampleCount, level.HTexture, next.VFramebuffer, next.Width, next.Height);
+		mBlurShader->BlurHorizontal(this, blurAmount, sampleCount, level.VTexture, level.HFramebuffer, level.Width, level.Height);
+		mBlurShader->BlurVertical(this, blurAmount, sampleCount, level.HTexture, next.VFramebuffer, next.Width, next.Height);
 	}
 
 	// Blur and upscale:
@@ -164,8 +164,8 @@ void FGLRenderer::BloomScene()
 		const auto &level = mBuffers->BloomLevels[i];
 		const auto &next = mBuffers->BloomLevels[i - 1];
 
-		mBlurShader->BlurHorizontal(mVBO, blurAmount, sampleCount, level.VTexture, level.HFramebuffer, level.Width, level.Height);
-		mBlurShader->BlurVertical(mVBO, blurAmount, sampleCount, level.HTexture, level.VFramebuffer, level.Width, level.Height);
+		mBlurShader->BlurHorizontal(this, blurAmount, sampleCount, level.VTexture, level.HFramebuffer, level.Width, level.Height);
+		mBlurShader->BlurVertical(this, blurAmount, sampleCount, level.HTexture, level.VFramebuffer, level.Width, level.Height);
 
 		// Linear upscale:
 		glBindFramebuffer(GL_FRAMEBUFFER, next.VFramebuffer);
@@ -179,8 +179,8 @@ void FGLRenderer::BloomScene()
 		RenderScreenQuad();
 	}
 
-	mBlurShader->BlurHorizontal(mVBO, blurAmount, sampleCount, level0.VTexture, level0.HFramebuffer, level0.Width, level0.Height);
-	mBlurShader->BlurVertical(mVBO, blurAmount, sampleCount, level0.HTexture, level0.VFramebuffer, level0.Width, level0.Height);
+	mBlurShader->BlurHorizontal(this, blurAmount, sampleCount, level0.VTexture, level0.HFramebuffer, level0.Width, level0.Height);
+	mBlurShader->BlurVertical(this, blurAmount, sampleCount, level0.HTexture, level0.VFramebuffer, level0.Width, level0.Height);
 
 	// Add bloom back to scene texture:
 	mBuffers->BindCurrentFB();
diff --git a/src/gl/shaders/gl_blurshader.cpp b/src/gl/shaders/gl_blurshader.cpp
index 10168148b..6154c17ce 100644
--- a/src/gl/shaders/gl_blurshader.cpp
+++ b/src/gl/shaders/gl_blurshader.cpp
@@ -49,6 +49,7 @@
 #include "gl/system/gl_cvars.h"
 #include "gl/shaders/gl_blurshader.h"
 #include "gl/data/gl_vertexbuffer.h"
+#include "gl/renderer/gl_renderer.h"
 
 //==========================================================================
 //
@@ -56,9 +57,9 @@
 //
 //==========================================================================
 
-void FBlurShader::BlurVertical(FFlatVertexBuffer *vbo, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height)
+void FBlurShader::BlurVertical(FGLRenderer *renderer, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height)
 {
-	Blur(vbo, blurAmount, sampleCount, inputTexture, outputFrameBuffer, width, height, true);
+	Blur(renderer, blurAmount, sampleCount, inputTexture, outputFrameBuffer, width, height, true);
 }
 
 //==========================================================================
@@ -67,9 +68,9 @@ void FBlurShader::BlurVertical(FFlatVertexBuffer *vbo, float blurAmount, int sam
 //
 //==========================================================================
 
-void FBlurShader::BlurHorizontal(FFlatVertexBuffer *vbo, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height)
+void FBlurShader::BlurHorizontal(FGLRenderer *renderer, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height)
 {
-	Blur(vbo, blurAmount, sampleCount, inputTexture, outputFrameBuffer, width, height, false);
+	Blur(renderer, blurAmount, sampleCount, inputTexture, outputFrameBuffer, width, height, false);
 }
 
 //==========================================================================
@@ -78,7 +79,7 @@ void FBlurShader::BlurHorizontal(FFlatVertexBuffer *vbo, float blurAmount, int s
 //
 //==========================================================================
 
-void FBlurShader::Blur(FFlatVertexBuffer *vbo, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height, bool vertical)
+void FBlurShader::Blur(FGLRenderer *renderer, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height, bool vertical)
 {
 	BlurSetup *setup = GetSetup(blurAmount, sampleCount);
 	if (vertical)
@@ -111,12 +112,7 @@ void FBlurShader::Blur(FFlatVertexBuffer *vbo, float blurAmount, int sampleCount
 	glViewport(0, 0, width, height);
 	glDisable(GL_BLEND);
 
-	FFlatVertex *ptr = vbo->GetBuffer();
-	ptr->Set(-1.0f, -1.0f, 0, 0.0f, 0.0f); ptr++;
-	ptr->Set(-1.0f, 1.0f, 0, 0.0f, 1.0f); ptr++;
-	ptr->Set(1.0f, -1.0f, 0, 1.0f, 0.0f); ptr++;
-	ptr->Set(1.0f, 1.0f, 0, 1.0f, 1.0f); ptr++;
-	vbo->RenderCurrent(ptr, GL_TRIANGLE_STRIP);
+	renderer->RenderScreenQuad();
 }
 
 //==========================================================================
diff --git a/src/gl/shaders/gl_blurshader.h b/src/gl/shaders/gl_blurshader.h
index 9af5a9101..92ef5f115 100644
--- a/src/gl/shaders/gl_blurshader.h
+++ b/src/gl/shaders/gl_blurshader.h
@@ -4,16 +4,16 @@
 #include "gl_shaderprogram.h"
 #include <memory>
 
-class FFlatVertexBuffer;
+class FGLRenderer;
 
 class FBlurShader
 {
 public:
-	void BlurVertical(FFlatVertexBuffer *vbo, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height);
-	void BlurHorizontal(FFlatVertexBuffer *vbo, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height);
+	void BlurVertical(FGLRenderer *renderer, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height);
+	void BlurHorizontal(FGLRenderer *renderer, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height);
 
 private:
-	void Blur(FFlatVertexBuffer *vbo, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height, bool vertical);
+	void Blur(FGLRenderer *renderer, float blurAmount, int sampleCount, GLuint inputTexture, GLuint outputFrameBuffer, int width, int height, bool vertical);
 
 	struct BlurSetup
 	{