Function Clear_N64DepthBuffer

Source/HLEGraphics/DLParser.cpp:1073–1099

Clear framebuffer, thanks Gonetz! http://www.emutalk.net/threads/15818-How-to-implement-quot-emulate-clear-quot-Answer-and-Question This fixes the jumpy camera in DK64, also the sun and flames glare in Zelda

//Clear framebuffer, thanks Gonetz! http://www.emutalk.net/threads/15818-How-to-implement-quot-emulate-clear-quot-Answer-and-Question
//This fixes the jumpy camera in DK64, also the sun and flames glare in Zelda
void Clear_N64DepthBuffer( MicroCodeCommand command )
{
	u32 x0 {(u32)(command.fillrect.x0 + 1)};
	u32 x1 {(u32)(command.fillrect.x1 + 1)};
	u32 y1 {command.fillrect.y1};
	u32 y0 {command.fillrect.y0};

	// Using s32 to force min/max to be done in a single op code for the PSP
	x0 = Min<s32>(Max<s32>(x0, scissors.left), scissors.right);
	x1 = Min<s32>(Max<s32>(x1, scissors.left), scissors.right);
	y1 = Min<s32>(Max<s32>(y1, scissors.top), scissors.bottom);
	y0 = Min<s32>(Max<s32>(y0, scissors.top), scissors.bottom);
	x0 >>= 1;
	x1 >>= 1;
	u32 zi_width_in_dwords {g_CI.Width >> 1};
	u32 fill_colour {gRenderer->GetFillColour()};
	u32 * dst {(u32*)(g_pu8RamBase + g_CI.Address) + y0 * zi_width_in_dwords};

	for( u32 y = y0; y <y1; y++ )
	{
		for( u32 x = x0; x < x1; x++ )
		{
			dst[x] = fill_colour;
		}
		dst += zi_width_in_dwords;
	}
}

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