From e80bbe24186e3b0799436c318268cf8169e5e742 Mon Sep 17 00:00:00 2001
From: Roz K <roz@rozk.net>
Date: Sun, 1 Jan 2023 07:57:10 +0100
Subject: [PATCH] Remove begin_frame and end_frame, add clear_buffer.

---
 __init__.py                    | 11 ++++++-----
 cpp/render.hpp                 |  7 ++++---
 cpp/render/render_opengles.cpp | 10 +++++-----
 3 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/__init__.py b/__init__.py
index 2e64991..fcb86c6 100644
--- a/__init__.py
+++ b/__init__.py
@@ -385,8 +385,12 @@ create_batch.argtypes = (
     ctypes.c_uint, # max_meshes
     ctypes.c_char_p) # params_format
 
-begin_frame = _engine.rk_begin_frame
-begin_frame.restype = None
+clear_buffer = _engine.rk_clear_buffer
+clear_buffer.restype = None
+clear_buffer.argtypes = (
+    ctypes.c_bool, # pixels
+    ctypes.c_bool, # depth
+    ctypes.c_bool) # stencil
 
 select_shader = _engine.rk_select_shader
 select_shader.restype = None
@@ -460,9 +464,6 @@ unselect_shader.restype = None
 unselect_shader.argtypes = (
     ctypes.c_void_p,) # shader
 
-end_frame = _engine.rk_end_frame
-end_frame.restype = None
-
 destroy_batch = _engine.rk_destroy_batch
 destroy_batch.restype = None
 destroy_batch.argtypes = (
diff --git a/cpp/render.hpp b/cpp/render.hpp
index 9ee9d71..5bd2abd 100644
--- a/cpp/render.hpp
+++ b/cpp/render.hpp
@@ -124,7 +124,10 @@ RK_EXPORT rk_batch_t rk_create_batch(
     rk_uint max_meshes,
     rk_param_format const * params_format);
 
-RK_EXPORT void rk_begin_frame();
+RK_EXPORT void rk_clear_buffer(
+    rk_bool pixels,
+    rk_bool depth,
+    rk_bool stencil);
 
 RK_EXPORT void rk_select_shader(
     rk_shader_t _shader);
@@ -174,8 +177,6 @@ RK_EXPORT void rk_unselect_texture(
 RK_EXPORT void rk_unselect_shader(
     rk_shader_t shader);
 
-RK_EXPORT void rk_end_frame();
-
 RK_EXPORT void rk_destroy_batch(
     rk_batch_t batch);
 
diff --git a/cpp/render/render_opengles.cpp b/cpp/render/render_opengles.cpp
index c71b907..acd1320 100644
--- a/cpp/render/render_opengles.cpp
+++ b/cpp/render/render_opengles.cpp
@@ -676,8 +676,11 @@ rk_batch_t rk_create_batch(
     return reinterpret_cast<rk_batch_t>(batch);
 }
 
-void rk_begin_frame() {
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+void rk_clear_buffer(
+    rk_bool pixels,
+    rk_bool depth,
+    rk_bool stencil) {
+    glClear((GL_COLOR_BUFFER_BIT * pixels) | (GL_DEPTH_BUFFER_BIT * depth) | (GL_STENCIL_BUFFER_BIT * stencil));
 }
 
 void rk_select_shader(
@@ -908,9 +911,6 @@ void rk_unselect_shader(
     glUseProgram(0);
 }
 
-void rk_end_frame() {
-}
-
 void rk_destroy_batch(
     rk_batch_t _batch) {
     rk_batch * const batch = reinterpret_cast<rk_batch *>(_batch);