diff --git a/renderer/HardwareBaseGPU.cpp b/renderer/HardwareBaseGPU.cpp
index 812f5955a..fda7d4075 100644
--- a/renderer/HardwareBaseGPU.cpp
+++ b/renderer/HardwareBaseGPU.cpp
@@ -284,25 +284,12 @@ void rend_DrawChunkedBitmap(chunked_bitmap *chunk, int x, int y, uint8_t alpha)
   int piece_w = bm_w(bm_array[0], 0);
   int piece_h = bm_h(bm_array[0], 0);
   int screen_w, screen_h;
-  int i, t;
   rend_SetZBufferState(0);
   rend_GetProjectionParameters(&screen_w, &screen_h);
-  for (i = 0; i < h; i++) {
-    for (t = 0; t < w; t++) {
+  for (int i = 0; i < h; i++) {
+    for (int t = 0; t < w; t++) {
       int dx = x + (piece_w * t);
       int dy = y + (piece_h * i);
-      int dw, dh;
-      if ((dx + piece_w) > screen_w)
-        dw = piece_w - ((dx + piece_w) - screen_w);
-      else
-        dw = piece_w;
-      if ((dy + piece_h) > screen_h)
-        dh = piece_h - ((dy + piece_h) - screen_h);
-      else
-        dh = piece_h;
-
-      float u2 = (float)dw / (float)piece_w;
-      float v2 = (float)dh / (float)piece_h;
       rend_DrawSimpleBitmap(bm_array[i * w + t], dx, dy);
     }
   }
diff --git a/renderer/HardwareOpenGL.cpp b/renderer/HardwareOpenGL.cpp
index fac46c4eb..0fbff8f45 100644
--- a/renderer/HardwareOpenGL.cpp
+++ b/renderer/HardwareOpenGL.cpp
@@ -268,9 +268,9 @@ int opengl_MakeTextureObject(int tn) {
 
 int opengl_InitCache() {
 
-  OpenGL_bitmap_remap = (uint16_t *)mem_malloc(MAX_BITMAPS * 2);
+  OpenGL_bitmap_remap = mem_rmalloc<uint16_t>(MAX_BITMAPS);
   ASSERT(OpenGL_bitmap_remap);
-  OpenGL_lightmap_remap = (uint16_t *)mem_malloc(MAX_LIGHTMAPS * 2);
+  OpenGL_lightmap_remap = mem_rmalloc<uint16_t>(MAX_LIGHTMAPS);
   ASSERT(OpenGL_lightmap_remap);
 
   OpenGL_bitmap_states = mem_rmalloc<uint8_t>(MAX_BITMAPS);
@@ -573,9 +573,9 @@ int opengl_Init(oeApplication *app, renderer_preferred_state *pref_state) {
   opengl_InitCache();
 
   if (OpenGL_packed_pixels) {
-    opengl_packed_Upload_data = (uint16_t *)mem_malloc(2048 * 2048 * 2);
-    opengl_packed_Translate_table = (uint16_t *)mem_malloc(65536 * 2);
-    opengl_packed_4444_translate_table = (uint16_t *)mem_malloc(65536 * 2);
+    opengl_packed_Upload_data = mem_rmalloc<uint16_t>(2048 * 2048);
+    opengl_packed_Translate_table = mem_rmalloc<uint16_t>(65536);
+    opengl_packed_4444_translate_table = mem_rmalloc<uint16_t>(65536);
 
     ASSERT(opengl_packed_Upload_data);
     ASSERT(opengl_packed_Translate_table);
@@ -620,9 +620,9 @@ int opengl_Init(oeApplication *app, renderer_preferred_state *pref_state) {
       opengl_packed_4444_translate_table[i] = INTEL_INT(pix);
     }
   } else {
-    opengl_Upload_data = (uint32_t *)mem_malloc(2048 * 2048 * 4);
-    opengl_Translate_table = (uint32_t *)mem_malloc(65536 * 4);
-    opengl_4444_translate_table = (uint32_t *)mem_malloc(65536 * 4);
+    opengl_Upload_data = mem_rmalloc<uint32_t>(2048 * 2048);
+    opengl_Translate_table = mem_rmalloc<uint32_t>(65536);
+    opengl_4444_translate_table = mem_rmalloc<uint32_t>(65536);
 
     ASSERT(opengl_Upload_data);
     ASSERT(opengl_Translate_table);
@@ -1683,10 +1683,6 @@ void rend_DrawSpecialLine(g3Point *p0, g3Point *p1) {
 
 // Takes a screenshot of the current frame and puts it into the handle passed
 std::unique_ptr<NewBitmap> rend_Screenshot() {
-  uint16_t *dest_data;
-  uint32_t *temp_data;
-
-  int total = gpu_state.screen_width * gpu_state.screen_height;
   auto result = std::make_unique<NewBitmap>(gpu_state.screen_width, gpu_state.screen_height, PixelDataFormat::RGBA32, true);
 
   if (!result || result->getData() == nullptr) {
@@ -1712,8 +1708,8 @@ void rend_Screenshot(int bm_handle) {
 
   uint16_t* dest_data = bm_data(bm_handle, 0);
 
-  for (int i = 0; i < h; i++) {
-    for (int t = 0; t < w; t++) {
+  for (std::size_t i = 0; i < h; i++) {
+    for (std::size_t t = 0; t < w; t++) {
       uint32_t spix = temp_data[i * w + t];
 
       int r = spix & 0xff;
diff --git a/renderer/ShaderProgram.h b/renderer/ShaderProgram.h
index 90ce5acb1..3bdb52293 100644
--- a/renderer/ShaderProgram.h
+++ b/renderer/ShaderProgram.h
@@ -67,7 +67,7 @@ struct VertexBuffer {
                   initialData,
                   bufferType);
 
-    for (GLint i{}; i < attribs.size(); i++) {
+    for (std::size_t i{}; i < attribs.size(); i++) {
       dglEnableVertexAttribArray(i);
       dglVertexAttribPointer(i,
                              attribs[i].size,