Mason Wheeler to sdl I updated SDL, and suddenly my SDL frames stopped working. They'd "initialize" full of gibberish, and I couldn't render anything to them. After a bit of digging, I found a problem: the renderer initialization routine in my SDL frame code wasn't getting called anymore. procedure TSdlFrame.Paint; begin if SDL_SelectRenderer(FWindowID) = -1 then CreateRenderer; SDL_RenderPresent; end; function TSdlFrame.CreateRenderer: boolean; const pf: tagPIXELFORMATDESCRIPTOR = (nSize: sizeof(pf); nVersion: 1; dwFlags: PFD_DRAW_TO_WINDOW or PFD_SUPPORT_OPENGL or PFD_DOUBLEBUFFER; iPixelType: PFD_TYPE_RGBA; cColorBits: 24; cAlphaBits: 8; iLayerType: PFD_MAIN_PLANE); RENDERERS: array[TRendererType] of AnsiString = ('software', 'gdi', 'opengl', 'd3d'); var pFormat: integer; begin if (SDL_SelectRenderer(FWindowID) = 0) then begin result := true; Exit; end; if FRendererType = rtOpenGL then begin pFormat := ChoosePixelFormat(canvas.Handle, @pf); if not SetPixelFormat(canvas.Handle, pFormat, @pf) then outputDebugString(PChar(SysErrorMessage(GetLastError))); if wglCreateContext(canvas.Handle) = 0 then outputDebugString(PChar(SysErrorMessage(GetLastError))); end; if (SDL_CreateRenderer(FWindowID, SDL_RendererIndex(RENDERERS[FRendererType]), [sdlrPresentFlip3, sdlrAccelerated]) = 0) then begin SDL_ShowWindow(FWindowID); assert(SDL_SetRenderDrawColor(0, 0, 0, 255) = 0); FFlags := SDL_GetWindowFlags(FWindowID); if assigned(FOnAvailable) then FOnAvailable(self); end else outputDebugString(pChar(format('SDL_CreateRenderer failed: %s', [sdl_GetError]))); result := SDL_SelectRenderer(FWindowID) = 0; end; This is a critical issue. The Paint method gets called when the control receives a WM_PAINT message from Windows. I can't create the renderer before then, or it will fail and cause trouble. And when I do create it, it needs to be created with certain parameters. So imagine my surprise when I started debugging into the DLL and found that SDL_SelectRenderer was trying to be "helpful" by creating the renderer for me if it didn't already exist! Now not only does my initialization code not get called, I end up with the wrong renderer and so things don't render as expected when I try to use the window.

# Makefile to build the pandora SDL library

AR	= arm-none-linux-gnueabi-ar
RANLIB	= arm-none-linux-gnueabi-ranlib
CC = arm-none-linux-gnueabi-gcc
CXX = arm-none-linux-gnueabi-g++
STRIP = arm-none-linux-gnueabi-strip

CFLAGS  = -O3 -march=armv7-a -mcpu=cortex-a8 -mtune=cortex-a8 -mfloat-abi=softfp \
	-mfpu=neon -ftree-vectorize -ffast-math -fomit-frame-pointer -fno-strict-aliasing -fsingle-precision-constant \
	-I./include -I$(PNDSDK)/usr/include -DSDL_REVISION=0

TARGET  = libSDL.a

SOURCES = ./src/*.c ./src/audio/*.c ./src/cdrom/*.c ./src/cpuinfo/*.c ./src/events/*.c \
	./src/file/*.c ./src/stdlib/*.c ./src/thread/*.c ./src/timer/*.c ./src/video/*.c \
	./src/joystick/*.c ./src/haptic/*.c ./src/power/*.c ./src/video/dummy/*.c ./src/audio/disk/*.c \
	./src/audio/dummy/*.c ./src/loadso/dlopen/*.c ./src/audio/dsp/*.c ./src/audio/dma/*.c \
	./src/thread/pthread/SDL_systhread.c ./src/thread/pthread/SDL_syssem.c \
	./src/thread/pthread/SDL_sysmutex.c ./src/thread/pthread/SDL_syscond.c \
	./src/joystick/linux/*.c ./src/haptic/linux/*.c ./src/timer/unix/*.c ./src/cdrom/dummy/*.c \
	./src/video/pandora/SDL_pandora.o ./src/video/pandora/SDL_pandora_events.o ./src/video/x11/*.c
	

OBJECTS = $(shell echo $(SOURCES) | sed -e 's,\.c,\.o,g')

CONFIG_H = $(shell cp include/SDL_config_pandora.h include/SDL_config.h && touch include/SDL_revision.h)

all: $(TARGET)

$(TARGET): $(CONFIG_H) $(OBJECTS)
	$(AR) crv $@ $^
	$(RANLIB) $@

clean:
	rm -f $(TARGET) $(OBJECTS)