[CORE,RLGL] Fix scale issues when ending a mode (#3746)

* Only restore GL scale back to screen scale if we are returning to a screen, not a render texture.

* blankspace

* reset back to default screen scale when ending a render texture since we are back on the default fbo

1 files changed, 12 insertions, 0 deletions

diff --git a/src/rlgl.h b/src/rlgl.h
index 6ad6394d..6dd3eb2c 100644
--- a/src/rlgl.h
+++ b/src/rlgl.h
@@ -621,6 +621,7 @@ RLAPI void rlDisableShader(void);                       // Disable shader progra
 // Framebuffer state
 RLAPI void rlEnableFramebuffer(unsigned int id);        // Enable render texture (fbo)
 RLAPI void rlDisableFramebuffer(void);                  // Disable render texture (fbo), return to default framebuffer
+RLAPI unsigned int rlGetActiveFramebuffer(void);        // Returns the active render texture (fbo), 0 for default framebuffer
 RLAPI void rlActiveDrawBuffers(int count);              // Activate multiple draw color buffers
 RLAPI void rlBlitFramebuffer(int srcX, int srcY, int srcWidth, int srcHeight, int dstX, int dstY, int dstWidth, int dstHeight, int bufferMask); // Blit active framebuffer to main framebuffer
 RLAPI void rlBindFramebuffer(unsigned int target, unsigned int framebuffer); // Bind framebuffer (FBO) 
@@ -1725,6 +1726,17 @@ void rlEnableFramebuffer(unsigned int id)
 #endif
 }
 
+// return the active render texture (fbo)
+unsigned int rlGetActiveFramebuffer(void)
+{
+#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES3)) && defined(RLGL_RENDER_TEXTURES_HINT)
+    GLint fboId = 0;
+    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &fboId);
+    return fboId;
+#endif
+    return 0;
+}
+
 // Disable rendering to texture
 void rlDisableFramebuffer(void)
 {