diff --git a/gfx/common/gl3_common.h b/gfx/common/gl3_common.h
index d24943c2d3..2ef4e6769b 100644
--- a/gfx/common/gl3_common.h
+++ b/gfx/common/gl3_common.h
@@ -153,8 +153,6 @@ void gl3_framebuffer_copy_partial(
       GLuint image,
       float rx, float ry);
 
-void gl3_build_default_matrix(float *data);
-
 uint32_t gl3_get_cross_compiler_target_version(void);
 
 RETRO_END_DECLS
diff --git a/gfx/drivers/gl3.c b/gfx/drivers/gl3.c
index e6c98d745a..f2cfe024b6 100644
--- a/gfx/drivers/gl3.c
+++ b/gfx/drivers/gl3.c
@@ -57,26 +57,6 @@
 
 static const struct video_ortho gl3_default_ortho = {0, 1, 0, 1, -1, 1};
 
-void gl3_build_default_matrix(float *data)
-{
-   data[0] = 2.0f;
-   data[1] = 0.0f;
-   data[2] = 0.0f;
-   data[3] = 0.0f;
-   data[4] = 0.0f;
-   data[5] = 2.0f;
-   data[6] = 0.0f;
-   data[7] = 0.0f;
-   data[8] = 0.0f;
-   data[9] = 0.0f;
-   data[10] = 2.0f;
-   data[11] = 0.0f;
-   data[12] = -1.0f;
-   data[13] = -1.0f;
-   data[14] = 0.0f;
-   data[15] = 1.0f;
-}
-
 void gl3_framebuffer_copy(
       GLuint fb_id,
       GLuint quad_program,
@@ -98,8 +78,12 @@ void gl3_framebuffer_copy(
    glUseProgram(quad_program);
    if (flat_ubo_vertex >= 0)
    {
-      float mvp[16];
-      gl3_build_default_matrix(mvp);
+      static float mvp[16] = { 
+                                2.0f, 0.0f, 0.0f, 0.0f,
+                                0.0f, 2.0f, 0.0f, 0.0f,
+                                0.0f, 0.0f, 2.0f, 0.0f,
+                               -1.0f,-1.0f, 0.0f, 1.0f
+                             };
       glUniform4fv(flat_ubo_vertex, 4, mvp);
    }
 
@@ -153,8 +137,12 @@ void gl3_framebuffer_copy_partial(
    glUseProgram(quad_program);
    if (flat_ubo_vertex >= 0)
    {
-      float mvp[16];
-      gl3_build_default_matrix(mvp);
+      static float mvp[16] = { 
+                                2.0f, 0.0f, 0.0f, 0.0f,
+                                0.0f, 2.0f, 0.0f, 0.0f,
+                                0.0f, 0.0f, 2.0f, 0.0f,
+                               -1.0f,-1.0f, 0.0f, 1.0f
+                             };
       glUniform4fv(flat_ubo_vertex, 4, mvp);
    }
    glDisable(GL_CULL_FACE);
diff --git a/gfx/drivers_shader/shader_gl3.cpp b/gfx/drivers_shader/shader_gl3.cpp
index 49e9d70d00..aac9322151 100644
--- a/gfx/drivers_shader/shader_gl3.cpp
+++ b/gfx/drivers_shader/shader_gl3.cpp
@@ -1400,8 +1400,25 @@ void Pass::build_semantics(uint8_t *buffer,
          memcpy(buffer + offset,
                mvp, sizeof(float) * 16);
       else
-         gl3_build_default_matrix(reinterpret_cast<float *>(
-                  buffer + offset));
+      {
+         float *mvp = reinterpret_cast<float *>(buffer + offset);
+         mvp[0]     = 2.0f;
+         mvp[1]     = 0.0f;
+         mvp[2]     = 0.0f;
+         mvp[3]     = 0.0f;
+         mvp[4]     = 0.0f;
+         mvp[5]     = 2.0f;
+         mvp[6]     = 0.0f;
+         mvp[7]     = 0.0f;
+         mvp[8]     = 0.0f;
+         mvp[9]     = 0.0f;
+         mvp[10]    = 2.0f;
+         mvp[11]    = 0.0f;
+         mvp[12]    = -1.0f;
+         mvp[13]    = -1.0f;
+         mvp[14]    = 0.0f;
+         mvp[15]    = 1.0f;
+      }
    }
 
    if (reflection.semantics[SLANG_SEMANTIC_MVP].push_constant)
@@ -1413,8 +1430,25 @@ void Pass::build_semantics(uint8_t *buffer,
          memcpy(push_constant_buffer.data() + offset,
                mvp, sizeof(float) * 16);
       else
-         gl3_build_default_matrix(reinterpret_cast<float *>(
-                  push_constant_buffer.data() + offset));
+      {
+         float *mvp = reinterpret_cast<float *>(push_constant_buffer.data() + offset);
+         mvp[0]     = 2.0f;
+         mvp[1]     = 0.0f;
+         mvp[2]     = 0.0f;
+         mvp[3]     = 0.0f;
+         mvp[4]     = 0.0f;
+         mvp[5]     = 2.0f;
+         mvp[6]     = 0.0f;
+         mvp[7]     = 0.0f;
+         mvp[8]     = 0.0f;
+         mvp[9]     = 0.0f;
+         mvp[10]    = 2.0f;
+         mvp[11]    = 0.0f;
+         mvp[12]    = -1.0f;
+         mvp[13]    = -1.0f;
+         mvp[14]    = 0.0f;
+         mvp[15]    = 1.0f;
+      }
    }
 
    /* Output information */