[vulkan] Use separate tracy GPU context for light culling

My efforts (especially the collect zone (what was I thinking)) got
tracy's knickers in a twist resulting in vanishing zones in the server.
It looks like there are some synchronisation issues between cpu and gpu,
but I'm not *too* worried about it at this stage.

include/QF/Vulkan/qf_lighting.h

@@ -56,7 +56,7 @@ enum {
 enum {
 	lighting_main,
 	lighting_shadow,
-	lighting_debug,
+	lighting_hull,
 };
 
 typedef struct qfv_light_render_s {
@@ -100,6 +100,8 @@ typedef struct lightingframe_s {
 	light_queue_t stage_queue[LIGHTING_STAGES];
 	// map_id (0,5) first layer (5,11)
 	uint16_t   *stage_targets;
+
+	qftVkCtx_t *qftVkCtx;
 } lightingframe_t;
 
 typedef struct lightingframeset_s

include/vid_vulkan.h

@@ -45,7 +45,7 @@ static inline void __qftVkZoneEnd (___tracy_vkctx_scope ***zone)
 #define qftCVkContextHostCalibrated(instance, physdev, device, instanceProcAddr, deviceProcAddr)
 #define qftCVkContextDestroy(ctx)
 #define qftCVkContextName(ctx, name, size)
-#define qftCVkContextCollect(ctx, cmdbuf)
+#define qftCVkCollect(ctx, cmdbuf)
 
 #define qftVkZone(ctx, cmdbuf, name) \
 	do { (void)(ctx); (void) (cmdbuf); } while (0)

libs/video/renderer/vulkan/rp_main_def.plist

@@ -1374,7 +1374,7 @@ renderpasses = {
 						color = $color.lights;
 						tasks = (
 							{ func = lighting_bind_descriptors;
-							  params = (debug, none); },
+							  params = (hull, none); },
 							{ func = lighting_draw_hulls; },
 						);
 
@@ -1921,7 +1921,7 @@ renderpasses = {
 						color = $color.lights;
 						tasks = (
 							{ func = lighting_bind_descriptors;
-							  params = (debug, none); },
+							  params = (hull, none); },
 							{ func = lighting_draw_splats; },
 						);
 
@@ -1975,7 +1975,7 @@ renderpasses = {
 						color = $color.lights;
 						tasks = (
 							{ func = lighting_bind_descriptors;
-							  params = (debug, none); },
+							  params = (hull, none); },
 							{ func = lighting_draw_splats; },
 						);
 

libs/video/renderer/vulkan/vulkan_lighting.c

@@ -927,7 +927,7 @@ lighting_bind_descriptors (const exprval_t **params, exprval_t *result,
 	auto shadow_type = *(int *) params[0]->value;
 	auto stage = *(int *) params[1]->value;
 
-	if (stage == lighting_debug) {
+	if (stage == lighting_hull) {
 		VkDescriptorSet sets[] = {
 			Vulkan_Matrix_Descriptors (ctx, ctx->curFrame),
 			lframe->lights_set,
@@ -1009,12 +1009,13 @@ lighting_cull_lights (const exprval_t **params, exprval_t *result,
 		.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
 		.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT,
 	});
-	{
-		qftVkScopedZoneC (taskctx->frame->qftVkCtx, cmd, "reset", 0xc0a000);
-		dfunc->vkCmdResetQueryPool (cmd, lframe->query, 0, MaxLights);
-	}
+	qftCVkCollect (lframe->qftVkCtx, cmd);
+	dfunc->vkCmdResetQueryPool (cmd, lframe->query, 0, MaxLights);
+	auto qftVkCtx = taskctx->frame->qftVkCtx;
+	taskctx->frame->qftVkCtx = lframe->qftVkCtx;
 	auto renderpass = &render->renderpasses[0];
 	QFV_RunRenderPassCmd (cmd, ctx, renderpass, 0);
+	taskctx->frame->qftVkCtx = qftVkCtx;
 	dfunc->vkEndCommandBuffer (cmd);
 
 	qfMessageL ("submit");
@@ -1128,12 +1129,12 @@ static exprtype_t lighting_stage_type = {
 static int lighting_stage_values[] = {
 	lighting_main,
 	lighting_shadow,
-	lighting_debug,
+	lighting_hull,
 };
 static exprsym_t lighting_stage_symbols[] = {
 	{"main", &lighting_stage_type, lighting_stage_values + 0},
 	{"shadow", &lighting_stage_type, lighting_stage_values + 1},
-	{"debug", &lighting_stage_type, lighting_stage_values + 2},
+	{"hull", &lighting_stage_type, lighting_stage_values + 2},
 	{}
 };
 static exprtab_t lighting_stage_symtab = { .symbols = lighting_stage_symbols };
@@ -1672,6 +1673,15 @@ Vulkan_Lighting_Setup (vulkan_ctx_t *ctx)
 			.queryCount = MaxLights,
 		}, 0, &lframe->query);
 		lframe->fence = QFV_CreateFence (device, 1);
+#ifdef TRACY_ENABLE
+		auto instance = ctx->instance->instance;
+		auto physdev = ctx->device->physDev->dev;
+		auto gipa = ctx->vkGetInstanceProcAddr;
+		auto gdpa = ctx->instance->funcs->vkGetDeviceProcAddr;
+		lframe->qftVkCtx = qftCVkContextHostCalibrated (instance, physdev,
+														device->dev,
+														gipa, gdpa);
+#endif
 	}
 	size_t target_count = MaxLights * 6;
 	size_t target_size = frames * sizeof (uint16_t[target_count]);