Differential D17069 Diff 59808 source/blender/draw/intern/shaders/draw_command_generate_comp.glsl

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source/blender/draw/intern/shaders/draw_command_generate_comp.glsl


	/**			/**
	* Convert DrawPrototype into draw commands.			* Convert DrawPrototype into draw commands.
	*/			*/

	#pragma BLENDER_REQUIRE(common_math_lib.glsl)			#pragma BLENDER_REQUIRE(common_math_lib.glsl)

	#define atomicAddAndGet(dst, val) (atomicAdd(dst, val) + val)			#define atomicAddAndGet(dst, val) (atomicAdd(dst, val) + val)

	/* This is only called by the last thread executed over the group's prototype draws. */			/* This is only called by the last thread executed over the group's prototype draws. */
	void write_draw_call(DrawGroup group, uint group_id)			void write_draw_call(DrawGroup group, uint group_id)
	{			{
	DrawCommand cmd;			DrawCommand cmd;
	cmd.vertex_len = group.vertex_len;			cmd.vertex_len = group.vertex_len;
	cmd.vertex_first = group.vertex_first;			cmd.vertex_first = group.vertex_first;
	if (group.base_index != -1) {			bool indexed_draw = group.base_index != -1;
				if (indexed_draw) {
	cmd.base_index = group.base_index;			cmd.base_index = group.base_index;
	cmd.instance_first_indexed = group.start;			cmd.instance_first_indexed = group.start;
	}			}
	else {			else {
	cmd._instance_first_array = group.start;			cmd._instance_first_array = group.start;
	}			}
	/* Back-facing command. */			/* Back-facing command. */
	cmd.instance_len = group_buf[group_id].back_facing_counter;			cmd.instance_len = group_buf[group_id].back_facing_counter;
	command_buf[group_id * 2 + 0] = cmd;			command_buf[group_id * 2 + 0] = cmd;

	/* Front-facing command. */			/* Front-facing command. */
				uint front_facing_start = group.start + (group.len - group.front_facing_len);
				if (indexed_draw) {
				cmd.instance_first_indexed = front_facing_start;
				}
				else {
				cmd._instance_first_array = front_facing_start;
				}
	cmd.instance_len = group_buf[group_id].front_facing_counter;			cmd.instance_len = group_buf[group_id].front_facing_counter;
	command_buf[group_id * 2 + 1] = cmd;			command_buf[group_id * 2 + 1] = cmd;

	/* Reset the counters for a next command gen dispatch. Avoids resending the whole data just			/* Reset the counters for a next command gen dispatch. Avoids resending the whole data just
	* for this purpose. Only the last thread will execute this so it is thread-safe. */			* for this purpose. Only the last thread will execute this so it is thread-safe. */
	group_buf[group_id].front_facing_counter = 0u;			group_buf[group_id].front_facing_counter = 0u;
	group_buf[group_id].back_facing_counter = 0u;			group_buf[group_id].back_facing_counter = 0u;
	group_buf[group_id].total_counter = 0u;			group_buf[group_id].total_counter = 0u;
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