initial

2026-10-24 10:12:37 +00:00 · 2024-01-19 23:55:07 +02:00
commit 156021347f
29 changed files with 4960 additions and 0 deletions
@@ -0,0 +1,11 @@
+package glx
+
+RENDER_TYPE										:: 0x8011
+RGBA_BIT											:: 0x00000001
+DEPTH_SIZE										:: 12
+DOUBLEBUFFER									:: 5
+SAMPLES												:: 100001
+CONTEXT_MAJOR_VERSION_ARB			:: 0x2091
+CONTEXT_MINOR_VERSION_ARB			:: 0x2092
+CONTEXT_PROFILE_MASK_ARB			:: 0x9126
+CONTEXT_CORE_PROFILE_BIT_ARB  :: 0x00000001
@@ -0,0 +1,97 @@
+package glx
+
+import x11 "vendor:x11/xlib"
+foreign import glx "system:GL"
+
+Drawable :: x11.XID
+
+@private
+__FBConfigRec :: struct {
+	visualType: i32,
+
+	transparentType: i32,
+	transparentRed, transparentGreen, transparentBlue, transparentAlpha: i32,
+	transparentIndex: i32,
+
+	visualCaveat: i32,
+
+	associatedVisualId: i32,
+	screen: i32,
+
+	drawableType: i32,
+	renderType: i32,
+
+	maxPbufferWidth, maxPbufferHeight, maxPbufferPixels: i32,
+	optimalPbufferWidth, optimalPbufferHeight: i32,  /* for SGIX_pbuffer */
+
+	visualSelectGroup: i32,	/* visuals grouped by select priority */
+
+	id: u32,
+
+	rgbMode: b8,
+	colorIndexMode: b8,
+	doubleBufferMode: b8,
+	stereoMode: b8,
+	haveAccumBuffer: b8,
+	haveDepthBuffer: b8,
+	haveStencilBuffer: b8,
+
+	/* The number of bits present in various buffers */
+	accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits: i32,
+	depthBits: i32,
+	stencilBits: i32,
+	indexBits: i32,
+	redBits, greenBits, blueBits, alphaBits: i32,
+	redMask, greenMask, blueMask, alphaMask: u32,
+
+	multiSampleSize: u32,/* Number of samples per pixel (0 if no ms) */
+
+	nMultiSampleBuffers: u32,/* Number of available ms buffers */
+	maxAuxBuffers: i32,
+
+	/* frame buffer level */
+	level: i32,
+
+	/* color ranges (for SGI_color_range) */
+	extendedRange: b8,
+	minRed, maxRed: f64,
+	minGreen, maxGreen: f64,
+	minBlue, maxBlue: f64,
+	minAlpha, maxAlpha: f64,
+}
+
+// apparently this isn't defined anywhere ???
+// so we define a minimal one according to this
+// https://dri.freedesktop.org/docs/gallium/glxapi_8h-source.html
+// see also: https://github.com/Tarnyko/EGLX/blob/b82af86a8a0daf3408fb7a6e7b07b02b01476626/EGLX.h#L280
+@private
+__ContextRec :: struct {
+	currentDpy: ^x11.Display,
+	isDirect: b8,
+	currentDrawable: Drawable,
+	currentReadable: Drawable,
+	xid: x11.XID
+}
+
+FBConfig :: ^__FBConfigRec
+Context :: ^__ContextRec
+
+foreign glx {
+	@(link_name = "glXGetProcAddressARB")
+	GetProcAddressARB				:: proc(name: ^u8) -> rawptr ---
+	@(link_name = "glXSwapBuffers")
+	SwapBuffers							:: proc(display: ^x11.Display, drawable: Drawable) ---
+	@(link_name = "glXQueryVersion")
+	QueryVersion						:: proc(display: ^x11.Display, major: ^i32, minor: ^i32) -> bool ---
+	@(link_name = "glXChooseFBConfig")
+	ChooseFBConfig					:: proc(display: ^x11.Display, screen: i32, attrib_list: ^i32, nelements: ^i32) -> [^]FBConfig ---
+	@(link_name = "glXCreateContextAttribsARB")
+	CreateContextAttribsARB	:: proc(display: ^x11.Display, config: FBConfig, share_context: Context, direct: bool, attrib_list: ^i32) -> Context ---
+	@(link_name = "glXDestroyContext")
+	DestroyContext					:: proc(display: ^x11.Display, ctx: Context) ---
+	@(link_name = "glXSwapIntervalEXT")
+	SwapIntervalEXT					:: proc(display: ^x11.Display, drawable: Drawable, interval: i32) -> bool ---
+	@(link_name = "glXMakeCurrent")
+	MakeCurrent							:: proc(display: ^x11.Display, drawable: Drawable, ctx: Context) -> bool ---
+}
+