[rlsw] Some platform fixes

[Bigfoot71]

Fixes compilation errors for DRM and handles resizing for SDL and WIN32

• Fixes [drm] Software renderer, missing/incorrect functions #5714
• Fixes [rlsw] Window resize not supported, segmentation fault on sw_color8_to_color() #5715

---

A little validation for WIN32 would be preferable; I don't have a Windows machine to test on, but I simply added this to HandleWindowResize:

#if defined(GRAPHICS_API_OPENGL_SOFTWARE)
swResize(clientSize.cx, clientSize.cy);
#endif

Also, I had added it for RGFW, but when I tried to test it I realized that blitting is not implemented, black screen, so I didn't do anything.

[Bigfoot71]

Also, a small detail, LibraryConfigurations.cmake might need to be reviewed when compiling for DRM with rlsw.

Because it initially forces GLES 2.0 and still tries to link egl-gbm:

raylib/cmake/LibraryConfigurations.cmake

Lines 97 to 114 in 6ff51d3

	elseif ("${PLATFORM}" STREQUAL "DRM")
	set(PLATFORM_CPP "PLATFORM_DRM")
	set(GRAPHICS "GRAPHICS_API_OPENGL_ES2")
	add_definitions(-D_DEFAULT_SOURCE)
	add_definitions(-DEGL_NO_X11)
	add_definitions(-DPLATFORM_DRM)
	find_library(GLESV2 GLESv2)
	find_library(EGL EGL)
	find_library(DRM drm)
	find_library(GBM gbm)
	if (NOT CMAKE_CROSSCOMPILING OR NOT CMAKE_SYSROOT)
	include_directories(/usr/include/libdrm)
	endif ()
	set(LIBS_PRIVATE ${GLESV2} ${EGL} ${DRM} ${GBM} atomic pthread dl)
	set(LIBS_PUBLIC m)

It works fine via rlsw afterwards though, I realized this because I didn't have the dev install for it.

[raysan5]

@Bigfoot71 Thanks for the quick fix! I'm testing the Win32 platform and reporting.

In the meantime, maybe @Peter0x44 @manuel5975p @VictorHM or @JohnnyCena123 (on my list of CMake maintainers) can take a look to the CMake issue?

[raysan5]

@Bigfoot71 Reviewing PLATFORM_DESKTOP_WIN32 but it still crashes, despite it seems the framebuffer is scaled correctly, or at least the size values in RLSW.framebuffer are correct:

trying to increment size but just two pixels width (from 800 to 802) and it works, swResize() is called but I got:

Any idea?

[Bigfoot71]

@raysan5 No real idea right now; everything works under SDL. I'd need to create a Windows VM to inspect it in more detail. I'll keep you posted.

The only thing that comes to mind is to check if clientSize.cx, clientSize.cy corresponds to the drawable area of ​​the window, and not something else... Although I don't see why that would produce this.

[raysan5]

@Bigfoot71 Yeah, I checked the clientSize and it seems good, also RLGL.framebuffer properties, it seems the framebuffer is correctly allocated... No worries, I'll keep investigating it after the release.