Refactor EGL/GL API loading

Remove glapi.sh code generation, replace it with hand-written loading
code that checks extension strings before calling eglGetProcAddress.

The GLES2 renderer still uses global state because of:

- {PUSH,POP}_GLES2_DEBUG macros
- wlr_gles2_texture_from_* taking a wlr_egl instead of the renderer

2 files changed, 29 insertions, 5 deletions

diff --git a/include/render/gles2.h b/include/render/gles2.h
index 7a629d69..817ec62d 100644
--- a/include/render/gles2.h
+++ b/include/render/gles2.h
@@ -14,6 +14,16 @@
 #include <wlr/render/wlr_texture.h>
 #include <wlr/util/log.h>
 
+struct wlr_gles2_procs {
+	PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES;
+	PFNGLDEBUGMESSAGECALLBACKKHRPROC glDebugMessageCallbackKHR;
+	PFNGLDEBUGMESSAGECONTROLKHRPROC glDebugMessageControlKHR;
+	PFNGLPOPDEBUGGROUPKHRPROC glPopDebugGroupKHR;
+	PFNGLPUSHDEBUGGROUPKHRPROC glPushDebugGroupKHR;
+};
+
+extern struct wlr_gles2_procs gles2_procs;
+
 struct wlr_gles2_pixel_format {
 	enum wl_shm_format wl_format;
 	GLint gl_format, gl_type;
@@ -33,7 +43,6 @@ struct wlr_gles2_renderer {
 	struct wlr_renderer wlr_renderer;
 
 	struct wlr_egl *egl;
-	const char *exts_str;
 
 	struct {
 		bool read_format_bgra_ext;
diff --git a/include/wlr/render/egl.h b/include/wlr/render/egl.h
index efded0b6..2853f8ed 100644
--- a/include/wlr/render/egl.h
+++ b/include/wlr/render/egl.h
@@ -22,6 +22,8 @@
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
+// TODO: remove eglmesaext.h
+#include <EGL/eglmesaext.h>
 #include <pixman.h>
 #include <stdbool.h>
 #include <wayland-server-core.h>
@@ -34,8 +36,6 @@ struct wlr_egl {
 	EGLConfig config;
 	EGLContext context;
 
-	const char *exts_str;
-
 	struct {
 		bool bind_wayland_display_wl;
 		bool buffer_age_ext;
@@ -43,10 +43,25 @@ struct wlr_egl {
 		bool image_dma_buf_export_mesa;
 		bool image_dmabuf_import_ext;
 		bool image_dmabuf_import_modifiers_ext;
-		bool swap_buffers_with_damage_ext;
-		bool swap_buffers_with_damage_khr;
+		bool swap_buffers_with_damage;
 	} exts;
 
+	struct {
+		PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT;
+		PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC eglCreatePlatformWindowSurfaceEXT;
+		PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR;
+		PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR;
+		PFNEGLQUERYWAYLANDBUFFERWL eglQueryWaylandBufferWL;
+		PFNEGLBINDWAYLANDDISPLAYWL eglBindWaylandDisplayWL;
+		PFNEGLUNBINDWAYLANDDISPLAYWL eglUnbindWaylandDisplayWL;
+		PFNEGLSWAPBUFFERSWITHDAMAGEEXTPROC eglSwapBuffersWithDamage; // KHR or EXT
+		PFNEGLQUERYDMABUFFORMATSEXTPROC eglQueryDmaBufFormatsEXT;
+		PFNEGLQUERYDMABUFMODIFIERSEXTPROC eglQueryDmaBufModifiersEXT;
+		PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC eglExportDMABUFImageQueryMESA;
+		PFNEGLEXPORTDMABUFIMAGEMESAPROC eglExportDMABUFImageMESA;
+		PFNEGLDEBUGMESSAGECONTROLKHRPROC eglDebugMessageControlKHR;
+	} procs;
+
 	struct wl_display *wl_display;
 
 	struct wlr_drm_format_set dmabuf_formats;