Cleanup: Nuke most of G.main from GPU code.

source/blender/gpu/intern/gpu_draw.c

@@ -274,7 +274,7 @@ static struct GPUTextureState {
 
 /* Mipmap settings */
 
-void GPU_set_gpu_mipmapping(int gpu_mipmap)
+void GPU_set_gpu_mipmapping(Main *bmain, int gpu_mipmap)
 {
 	int old_value = GTS.gpu_mipmap;
 
@@ -282,7 +282,7 @@ void GPU_set_gpu_mipmapping(int gpu_mipmap)
 	GTS.gpu_mipmap = gpu_mipmap && GLEW_EXT_framebuffer_object;
 
 	if (old_value != GTS.gpu_mipmap) {
-		GPU_free_images();
+		GPU_free_images(bmain);
 	}
 }
 
@@ -309,10 +309,10 @@ static void gpu_generate_mipmap(GLenum target)
 		glDisable(target);
 }
 
-void GPU_set_mipmap(bool mipmap)
+void GPU_set_mipmap(Main *bmain, bool mipmap)
 {
 	if (GTS.domipmap != mipmap) {
-		GPU_free_images();
+		GPU_free_images(bmain);
 		GTS.domipmap = mipmap;
 	}
 }
@@ -360,10 +360,10 @@ static GLenum gpu_get_mipmap_filter(bool mag)
 }
 
 /* Anisotropic filtering settings */
-void GPU_set_anisotropic(float value)
+void GPU_set_anisotropic(Main *bmain, float value)
 {
 	if (GTS.anisotropic != value) {
-		GPU_free_images();
+		GPU_free_images(bmain);
 
 		/* Clamp value to the maximum value the graphics card supports */
 		const float max = GPU_max_texture_anisotropy();
@@ -1152,7 +1152,7 @@ int GPU_set_tpage(MTexPoly *mtexpoly, int mipmap, int alphablend)
  * temporary disabling/enabling mipmapping on all images for quick texture
  * updates with glTexSubImage2D. images that didn't change don't have to be
  * re-uploaded to OpenGL */
-void GPU_paint_set_mipmap(bool mipmap)
+void GPU_paint_set_mipmap(Main *bmain, bool mipmap)
 {
 	if (!GTS.domipmap)
 		return;
@@ -1160,7 +1160,7 @@ void GPU_paint_set_mipmap(bool mipmap)
 	GTS.texpaint = !mipmap;
 
 	if (mipmap) {
-		for (Image *ima = G.main->image.first; ima; ima = ima->id.next) {
+		for (Image *ima = bmain->image.first; ima; ima = ima->id.next) {
 			if (BKE_image_has_bindcode(ima)) {
 				if (ima->tpageflag & IMA_MIPMAP_COMPLETE) {
 					if (ima->bindcode[TEXTARGET_TEXTURE_2D]) {
@@ -1183,7 +1183,7 @@ void GPU_paint_set_mipmap(bool mipmap)
 
 	}
 	else {
-		for (Image *ima = G.main->image.first; ima; ima = ima->id.next) {
+		for (Image *ima = bmain->image.first; ima; ima = ima->id.next) {
 			if (BKE_image_has_bindcode(ima)) {
 				if (ima->bindcode[TEXTARGET_TEXTURE_2D]) {
 					glBindTexture(GL_TEXTURE_2D, ima->bindcode[TEXTARGET_TEXTURE_2D]);
@@ -1355,9 +1355,9 @@ void GPU_paint_update_image(Image *ima, ImageUser *iuser, int x, int y, int w, i
 	BKE_image_release_ibuf(ima, ibuf, NULL);
 }
 
-void GPU_update_images_framechange(void)
+void GPU_update_images_framechange(Main *bmain)
 {
-	for (Image *ima = G.main->image.first; ima; ima = ima->id.next) {
+	for (Image *ima = bmain->image.first; ima; ima = ima->id.next) {
 		if (ima->tpageflag & IMA_TWINANIM) {
 			if (ima->twend >= ima->xrep * ima->yrep)
 				ima->twend = ima->xrep * ima->yrep - 1;
@@ -1480,7 +1480,7 @@ static void gpu_queue_image_for_free(Image *ima)
 	BLI_thread_unlock(LOCK_OPENGL);
 }
 
-void GPU_free_unused_buffers(void)
+void GPU_free_unused_buffers(Main *bmain)
 {
 	if (!BLI_thread_is_main())
 		return;
@@ -1492,7 +1492,7 @@ void GPU_free_unused_buffers(void)
 		Image *ima = node->link;
 
 		/* check in case it was freed in the meantime */
-		if (G.main && BLI_findindex(&G.main->image, ima) != -1)
+		if (bmain && BLI_findindex(&bmain->image, ima) != -1)
 			GPU_free_image(ima);
 	}
 
@@ -1536,24 +1536,29 @@ void GPU_free_image(Image *ima)
 	ima->tpageflag &= ~(IMA_MIPMAP_COMPLETE | IMA_GLBIND_IS_DATA);
 }
 
-void GPU_free_images(void)
+void GPU_free_images(Main *bmain)
 {
-	if (G.main)
-		for (Image *ima = G.main->image.first; ima; ima = ima->id.next)
+	if (bmain) {
+		for (Image *ima = bmain->image.first; ima; ima = ima->id.next) {
 			GPU_free_image(ima);
+		}
+	}
 }
 
 /* same as above but only free animated images */
-void GPU_free_images_anim(void)
+void GPU_free_images_anim(Main *bmain)
 {
-	if (G.main)
-		for (Image *ima = G.main->image.first; ima; ima = ima->id.next)
-			if (BKE_image_is_animated(ima))
+	if (bmain) {
+		for (Image *ima = bmain->image.first; ima; ima = ima->id.next) {
+			if (BKE_image_is_animated(ima)) {
 				GPU_free_image(ima);
+			}
+		}
+	}
 }
 
 
-void GPU_free_images_old(void)
+void GPU_free_images_old(Main *bmain)
 {
 	static int lasttime = 0;
 	int ctime = (int)PIL_check_seconds_timer();
@@ -1571,7 +1576,7 @@ void GPU_free_images_old(void)
 
 	lasttime = ctime;
 
-	Image *ima = G.main->image.first;
+	Image *ima = bmain->image.first;
 	while (ima) {
 		if ((ima->flag & IMA_NOCOLLECT) == 0 && ctime - ima->lastused > U.textimeout) {
 			/* If it's in GL memory, deallocate and set time tag to current time