ppsspp/GPU/Null/NullGpu.cpp

// Copyright (c) 2012- PPSSPP Project.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.


#include "NullGpu.h"
#include "../GPUState.h"
#include "../ge_constants.h"
#include "../../Core/MemMap.h"

struct DisplayState 
{
	u32 pc;
	u32 stallAddr;
};

static DisplayState dcontext;

struct DisplayList
{
	int id;
	u32 listpc;
	u32 stall;
};

static std::vector<DisplayList> dlQueue;

static u32 prev;
static u32 stack[2];
static u32 stackptr = 0;
static bool finished;

static int dlIdGenerator = 1;

bool NullGPU::ProcessDLQueue()
{
	std::vector<DisplayList>::iterator iter = dlQueue.begin();
	while (!(iter == dlQueue.end()))
	{
		DisplayList &l = *iter;
		dcontext.pc = l.listpc;
		dcontext.stallAddr = l.stall;
//		DEBUG_LOG(G3D,"Okay, starting DL execution at %08 - stall = %08x", context.pc, stallAddr);
		if (!InterpretList())
		{
			l.listpc = dcontext.pc;
			l.stall = dcontext.stallAddr;
			return false;
		}
		else
		{
			//At the end, we can remove it from the queue and continue
			dlQueue.erase(iter);
			//this invalidated the iterator, let's fix it
			iter = dlQueue.begin();
		}
	}
	return true; //no more lists!
}

u32 NullGPU::EnqueueList(u32 listpc, u32 stall)
{
	DisplayList dl;
	dl.id = dlIdGenerator++;
	dl.listpc = listpc&0xFFFFFFF;
	dl.stall = stall&0xFFFFFFF;
	dlQueue.push_back(dl);
	if (!ProcessDLQueue())
		return dl.id;
	else
		return 0;
}

void NullGPU::UpdateStall(int listid, u32 newstall)
{
	// this needs improvement....
	for (std::vector<DisplayList>::iterator iter = dlQueue.begin(); iter != dlQueue.end(); iter++)
	{
		DisplayList &l = *iter;
		if (l.id == listid)
		{
			l.stall = newstall & 0xFFFFFFF;
		}
	}
	
	ProcessDLQueue();
}

void NullGPU::ExecuteOp(u32 op, u32 diff)
{
	u32 cmd = op >> 24;
	u32 data = op & 0xFFFFFF;

	// Handle control and drawing commands here directly. The others we delegate.
	switch (cmd)
	{
	case GE_CMD_BASE:
		DEBUG_LOG(G3D,"DL BASE: %06x", data);
		break;

	case GE_CMD_VADDR:		/// <<8????
		gstate.vertexAddr = (gstate.base<<8)|data;
		DEBUG_LOG(G3D,"DL VADDR: %06x", gstate.vertexAddr);
		break;

	case GE_CMD_IADDR:
		gstate.indexAddr	= (gstate.base<<8)|data;
		DEBUG_LOG(G3D,"DL IADDR: %06x", gstate.indexAddr);
		break;

	case GE_CMD_PRIM:
		{
			u32 count = data & 0xFFFF;
			u32 type = data >> 16;
			static const char* types[7] = {
				"POINTS=0,",
				"LINES=1,",
				"LINE_STRIP=2,",
				"TRIANGLES=3,",
				"TRIANGLE_STRIP=4,",
				"TRIANGLE_FAN=5,",
				"RECTANGLES=6,",
			};
			DEBUG_LOG(G3D, "DL DrawPrim type: %s count: %i vaddr= %08x, iaddr= %08x", type<7 ? types[type] : "INVALID", count, gstate.vertexAddr, gstate.indexAddr);
		}
		break;

	// The arrow and other rotary items in Puzbob are bezier patches, strangely enough.
	case GE_CMD_BEZIER:
		{
			int bz_ucount = data & 0xFF;
			int bz_vcount = (data >> 8) & 0xFF;
			DEBUG_LOG(G3D,"DL DRAW BEZIER: %i x %i", bz_ucount, bz_vcount);
		}
		break;

	case GE_CMD_SPLINE:
		{
			int sp_ucount = data & 0xFF;
			int sp_vcount = (data >> 8) & 0xFF;
			int sp_utype = (data >> 16) & 0x3;
			int sp_vtype = (data >> 18) & 0x3;
			//drawSpline(sp_ucount, sp_vcount, sp_utype, sp_vtype);
			DEBUG_LOG(G3D,"DL DRAW SPLINE: %i x %i, %i x %i", sp_ucount, sp_vcount, sp_utype, sp_vtype);
		}
		break;

	case GE_CMD_JUMP: 
		{
			u32 target = ((gstate.base << 8) | (op & 0xFFFFFC)) & 0x0FFFFFFF;
			DEBUG_LOG(G3D,"DL CMD JUMP - %08x to %08x", dcontext.pc, target);
			dcontext.pc = target - 4; // pc will be increased after we return, counteract that
		}
		break;

	case GE_CMD_CALL: 
		{
			u32 retval = dcontext.pc + 4;
			stack[stackptr++] = retval; 
			u32 target = ((gstate.base << 8) | (op & 0xFFFFFC)) & 0xFFFFFFF;
			DEBUG_LOG(G3D,"DL CMD CALL - %08x to %08x, ret=%08x", dcontext.pc, target, retval);
			dcontext.pc = target - 4;	// pc will be increased after we return, counteract that
		}
		break;

	case GE_CMD_RET: 
		//TODO : debug!
		{
			u32 target = stack[--stackptr] & 0xFFFFFFF; 
			DEBUG_LOG(G3D,"DL CMD RET - from %08x to %08x", dcontext.pc, target);
			dcontext.pc = target - 4;
		}
		break;

	case GE_CMD_SIGNAL:
		ERROR_LOG(G3D, "DL GE_CMD_SIGNAL %08x", data & 0xFFFFFF);
		{
			// int behaviour = (data >> 16) & 0xFF;
			// int signal = data & 0xFFFF;
		}

		// This should generate a GE Interrupt 
		// __TriggerInterrupt(PSP_GE_INTR);
			
		// Apparently, these callbacks should be done in a special interrupt way.
		//for (size_t i = 0; i < signalCallbacks.size(); i++)
		//{
		//	__KernelNotifyCallback(-1, signalCallbacks[i].first, signal);
		//}

		break;

	case GE_CMD_BJUMP:
		// bounding box jump. Let's just not jump, for now.
		DEBUG_LOG(G3D,"DL BBOX JUMP - unimplemented");
		break;

	case GE_CMD_BOUNDINGBOX:
		// bounding box test. Let's do nothing.
		DEBUG_LOG(G3D,"DL BBOX TEST - unimplemented");
		break;

	case GE_CMD_ORIGIN:
		gstate.offsetAddr = dcontext.pc & 0xFFFFFF;
		break;

	case GE_CMD_VERTEXTYPE:
		DEBUG_LOG(G3D,"DL SetVertexType: %06x", data);
		// This sets through-mode or not, as well.
		break;

	case GE_CMD_OFFSETADDR:
		//			offsetAddr = data<<8;
		break;


	case GE_CMD_FINISH:
		DEBUG_LOG(G3D,"DL CMD FINISH");
		// Trigger the finish callbacks
		{
			// Apparently, these callbacks should be done in a special interrupt way.

			//for (size_t i = 0; i < finishCallbacks.size(); i++)
			//{
			//	__KernelNotifyCallback(-1, finishCallbacks[i].first, 0);
			//}
		}
		break;

	case GE_CMD_END: 
		DEBUG_LOG(G3D,"DL CMD END");
		{
			switch (prev >> 24)
			{
			case GE_CMD_FINISH:
				finished = true;
				break;
			default:
				DEBUG_LOG(G3D,"Ah, not finished: %06x", prev & 0xFFFFFF);
				break;
			}
		}
			
		// This should generate a Reading Ended interrupt
		// __TriggerInterrupt(PSP_GE_INTR);

		break;

	case GE_CMD_REGION1:
		{
			int x1 = data & 0x3ff;
			int y1 = data >> 10;
			//topleft
			DEBUG_LOG(G3D,"DL Region TL: %d %d", x1, y1);
		}
		break;

	case GE_CMD_REGION2:
		{
			int x2 = data & 0x3ff;
			int y2 = data >> 10;
			DEBUG_LOG(G3D,"DL Region BR: %d %d", x2, y2);
		}
		break;

	case GE_CMD_CLIPENABLE:
		DEBUG_LOG(G3D, "DL Clip Enable: %i   (ignoring)", data);
		//we always clip, this is opengl
		break;

	case GE_CMD_CULLFACEENABLE: 
		DEBUG_LOG(G3D, "DL CullFace Enable: %i   (ignoring)", data);
		break;

	case GE_CMD_TEXTUREMAPENABLE: 
		DEBUG_LOG(G3D, "DL Texture map enable: %i", data);
		break;

	case GE_CMD_LIGHTINGENABLE:
		DEBUG_LOG(G3D, "DL Lighting enable: %i", data);
		data += 1;
		//We don't use OpenGL lighting
		break;

	case GE_CMD_FOGENABLE:		
		DEBUG_LOG(G3D, "DL Fog Enable: %i", gstate.fogEnable);
		break;

	case GE_CMD_DITHERENABLE:
		DEBUG_LOG(G3D, "DL Dither Enable: %i", gstate.ditherEnable);
		break;

	case GE_CMD_OFFSETX:		
		DEBUG_LOG(G3D, "DL Offset X: %i", gstate.offsetx);
		break;

	case GE_CMD_OFFSETY:		
		DEBUG_LOG(G3D, "DL Offset Y: %i", gstate.offsety);
		break;

	case GE_CMD_TEXSCALEU: 
		gstate.uScale = getFloat24(data); 
		DEBUG_LOG(G3D, "DL Texture U Scale: %f", gstate.uScale);
		break;

	case GE_CMD_TEXSCALEV: 
		gstate.vScale = getFloat24(data); 
		DEBUG_LOG(G3D, "DL Texture V Scale: %f", gstate.vScale);
		break;

	case GE_CMD_TEXOFFSETU: 
		gstate.uOff = getFloat24(data);	
		DEBUG_LOG(G3D, "DL Texture U Offset: %f", gstate.uOff);
		break;

	case GE_CMD_TEXOFFSETV: 
		gstate.vOff = getFloat24(data);	
		DEBUG_LOG(G3D, "DL Texture V Offset: %f", gstate.vOff);
		break;

	case GE_CMD_SCISSOR1:
		{
			int x1 = data & 0x3ff;
			int y1 = data >> 10;
			DEBUG_LOG(G3D, "DL Scissor TL: %i, %i", x1,y1);
		}
		break;
	case GE_CMD_SCISSOR2:
		{
			int x2 = data & 0x3ff;
			int y2 = data >> 10;
			DEBUG_LOG(G3D, "DL Scissor BR: %i, %i", x2, y2);
		}
		break;

	case GE_CMD_MINZ: 
		DEBUG_LOG(G3D, "DL MinZ: %i", data);
		break;

	case GE_CMD_MAXZ: 
		DEBUG_LOG(G3D, "DL MaxZ: %i", data);
		break;

	case GE_CMD_FRAMEBUFPTR:
		{
			u32 ptr = op & 0xFFE000;
			DEBUG_LOG(G3D, "DL FramebufPtr: %08x", ptr);
		}
		break;

	case GE_CMD_FRAMEBUFWIDTH:
		{
			u32 w = data & 0xFFFFFF;
			DEBUG_LOG(G3D, "DL FramebufWidth: %i", w);
		}
		break;

	case GE_CMD_FRAMEBUFPIXFORMAT:
		break;

	case GE_CMD_TEXADDR0:
		gstate.textureChanged=true;
	case GE_CMD_TEXADDR1:
	case GE_CMD_TEXADDR2:
	case GE_CMD_TEXADDR3:
	case GE_CMD_TEXADDR4:
	case GE_CMD_TEXADDR5:
	case GE_CMD_TEXADDR6:
	case GE_CMD_TEXADDR7:
		DEBUG_LOG(G3D,"DL Texture address %i: %06x", cmd-GE_CMD_TEXADDR0, data);
		break;

	case GE_CMD_TEXBUFWIDTH0:
		gstate.textureChanged=true;
	case GE_CMD_TEXBUFWIDTH1:
	case GE_CMD_TEXBUFWIDTH2:
	case GE_CMD_TEXBUFWIDTH3:
	case GE_CMD_TEXBUFWIDTH4:
	case GE_CMD_TEXBUFWIDTH5:
	case GE_CMD_TEXBUFWIDTH6:
	case GE_CMD_TEXBUFWIDTH7:
		DEBUG_LOG(G3D,"DL Texture BUFWIDTHess %i: %06x", cmd-GE_CMD_TEXBUFWIDTH0, data);
		break;

	case GE_CMD_CLUTADDR:
		//DEBUG_LOG(G3D,"CLUT base addr: %06x", data);
		break;

	case GE_CMD_CLUTADDRUPPER:
		DEBUG_LOG(G3D,"DL CLUT addr: %08x", ((gstate.clutaddrupper & 0xFF0000)<<8) | (gstate.clutaddr & 0xFFFFFF));
		break;

	case GE_CMD_LOADCLUT:
		{
			u32 clutAttr = ((gstate.clutaddrupper & 0xFF0000)<<8) | (gstate.clutaddr & 0xFFFFFF);
			if (clutAttr)
			{
				u16 *clut = (u16*)Memory::GetPointer(clutAttr);
				if (clut) {
					int numColors = 16 * (data&0x3F);
					memcpy(&gstate.paletteMem[0], clut, numColors * 2);
				}
				DEBUG_LOG(G3D,"DL Clut load: %i palettes", data);
			}
			else
			{
				DEBUG_LOG(G3D,"DL Empty Clut load");
			}
			// Should hash and invalidate all paletted textures on use
		}
		break;

//		case GE_CMD_TRANSFERSRC:

	case GE_CMD_TRANSFERSRCW:
		{
			u32 xferSrc = gstate.transfersrc | ((data&0xFF0000)<<8);
			u32 xferSrcW = gstate.transfersrcw & 1023;
			DEBUG_LOG(G3D,"Block Transfer Src: %08x	W: %i", xferSrc, xferSrcW);
			break;
		}
//		case GE_CMD_TRANSFERDST:

	case GE_CMD_TRANSFERDSTW:
		{
			u32 xferDst= gstate.transferdst | ((data&0xFF0000)<<8);
			u32 xferDstW = gstate.transferdstw & 1023;
			DEBUG_LOG(G3D,"Block Transfer Dest: %08x	W: %i", xferDst, xferDstW);
			break;
		}
		
	case GE_CMD_TRANSFERSRCPOS:
		{
			u32 x = (data & 1023)+1;
			u32 y = ((data>>10) & 1023)+1;
			DEBUG_LOG(G3D, "DL Block Transfer Src Rect TL: %i, %i", x, y);
			break;
		}

	case GE_CMD_TRANSFERDSTPOS:
		{
			u32 x = (data & 1023)+1;
			u32 y = ((data>>10) & 1023)+1;
			DEBUG_LOG(G3D, "DL Block Transfer Dest Rect TL: %i, %i", x, y);
			break;
		}

	case GE_CMD_TRANSFERSIZE:
		{
			u32 w = (data & 1023)+1;
			u32 h = ((data>>10) & 1023)+1;
			DEBUG_LOG(G3D, "DL Block Transfer Rect Size: %i x %i", w, h);
			break;
		}

	case GE_CMD_TRANSFERSTART:
		{
			DEBUG_LOG(G3D, "DL Texture Transfer Start: PixFormat %i", data);
			// TODO: Here we should check if the transfer overlaps a framebuffer or any textures,
			// and take appropriate action. If not, this should just be a block transfer within
			// GPU memory which could be implemented by a copy loop.
			break;
		}

	case GE_CMD_TEXSIZE0:
		gstate.textureChanged=true;
		gstate.curTextureWidth = 1 << (gstate.texsize[0] & 0xf);
		gstate.curTextureHeight = 1 << ((gstate.texsize[0]>>8) & 0xf);
		//fall thru - ignoring the mipmap sizes for now
	case GE_CMD_TEXSIZE1:
	case GE_CMD_TEXSIZE2:
	case GE_CMD_TEXSIZE3:
	case GE_CMD_TEXSIZE4:
	case GE_CMD_TEXSIZE5:
	case GE_CMD_TEXSIZE6:
	case GE_CMD_TEXSIZE7:
		DEBUG_LOG(G3D,"DL Texture Size: %06x",	data);
		break;

	case GE_CMD_ZBUFPTR:
		{
			u32 ptr = op & 0xFFE000;
			DEBUG_LOG(G3D,"Zbuf Ptr: %06x", ptr);
		}
		break;

	case GE_CMD_ZBUFWIDTH:
		{
			u32 w = data & 0xFFFFFF;
			DEBUG_LOG(G3D,"Zbuf Width: %i", w);
		}
		break;

	case GE_CMD_AMBIENTCOLOR:
		DEBUG_LOG(G3D,"DL Ambient Color: %06x",	data);
		break;

	case GE_CMD_AMBIENTALPHA:
		DEBUG_LOG(G3D,"DL Ambient Alpha: %06x",	data);
		break;

	case GE_CMD_MATERIALAMBIENT:
		DEBUG_LOG(G3D,"DL Material Ambient Color: %06x",	data);
		break;

	case GE_CMD_MATERIALDIFFUSE:
		DEBUG_LOG(G3D,"DL Material Diffuse Color: %06x",	data);
		break;

	case GE_CMD_MATERIALEMISSIVE:
		DEBUG_LOG(G3D,"DL Material Emissive Color: %06x",	data);
		break;

	case GE_CMD_MATERIALSPECULAR:
		DEBUG_LOG(G3D,"DL Material Specular Color: %06x",	data);
		break;

	case GE_CMD_MATERIALALPHA:
		DEBUG_LOG(G3D,"DL Material Alpha Color: %06x",	data);
		break;

	case GE_CMD_MATERIALSPECULARCOEF:
		DEBUG_LOG(G3D,"DL Material specular coef: %f", getFloat24(data));
		break;

	case GE_CMD_LIGHTTYPE0:
	case GE_CMD_LIGHTTYPE1:
	case GE_CMD_LIGHTTYPE2:
	case GE_CMD_LIGHTTYPE3:
		DEBUG_LOG(G3D,"DL Light %i type: %06x", cmd-GE_CMD_LIGHTTYPE0, data);
		break;

	case GE_CMD_LX0:case GE_CMD_LY0:case GE_CMD_LZ0:
	case GE_CMD_LX1:case GE_CMD_LY1:case GE_CMD_LZ1:
	case GE_CMD_LX2:case GE_CMD_LY2:case GE_CMD_LZ2:
	case GE_CMD_LX3:case GE_CMD_LY3:case GE_CMD_LZ3:
		{
			int n = cmd - GE_CMD_LX0;
			int l = n / 3;
			int c = n % 3;
			float val = getFloat24(data);
			DEBUG_LOG(G3D,"DL Light %i %c pos: %f", l, c+'X', val);
			gstate.lightpos[l][c] = val;
		}
		break;

	case GE_CMD_LDX0:case GE_CMD_LDY0:case GE_CMD_LDZ0:
	case GE_CMD_LDX1:case GE_CMD_LDY1:case GE_CMD_LDZ1:
	case GE_CMD_LDX2:case GE_CMD_LDY2:case GE_CMD_LDZ2:
	case GE_CMD_LDX3:case GE_CMD_LDY3:case GE_CMD_LDZ3:
		{
			int n = cmd - GE_CMD_LDX0;
			int l = n / 3;
			int c = n % 3;
			float val = getFloat24(data);
			DEBUG_LOG(G3D,"DL Light %i %c dir: %f", l, c+'X', val);
			gstate.lightdir[l][c] = val;
		}
		break;

	case GE_CMD_LKA0:case GE_CMD_LKB0:case GE_CMD_LKC0:
	case GE_CMD_LKA1:case GE_CMD_LKB1:case GE_CMD_LKC1:
	case GE_CMD_LKA2:case GE_CMD_LKB2:case GE_CMD_LKC2:
	case GE_CMD_LKA3:case GE_CMD_LKB3:case GE_CMD_LKC3:
		{
			int n = cmd - GE_CMD_LKA0;
			int l = n / 3;
			int c = n % 3;
			float val = getFloat24(data);
			DEBUG_LOG(G3D,"DL Light %i %c att: %f", l, c+'X', val);
			gstate.lightatt[l][c] = val;
		}
		break;


	case GE_CMD_LAC0:case GE_CMD_LAC1:case GE_CMD_LAC2:case GE_CMD_LAC3:
	case GE_CMD_LDC0:case GE_CMD_LDC1:case GE_CMD_LDC2:case GE_CMD_LDC3:
	case GE_CMD_LSC0:case GE_CMD_LSC1:case GE_CMD_LSC2:case GE_CMD_LSC3:
		{
			float r = (float)(data>>16)/255.0f;
			float g = (float)((data>>8) & 0xff)/255.0f;
			float b = (float)(data & 0xff)/255.0f;

			int l = (cmd - GE_CMD_LAC0) / 3;
			int t = (cmd - GE_CMD_LAC0) % 3;
			gstate.lightColor[t][l].r = r;
			gstate.lightColor[t][l].g = g;
			gstate.lightColor[t][l].b = b;
		}
		break;

	case GE_CMD_VIEWPORTX1:
	case GE_CMD_VIEWPORTY1:
	case GE_CMD_VIEWPORTZ1:
	case GE_CMD_VIEWPORTX2:
	case GE_CMD_VIEWPORTY2:
	case GE_CMD_VIEWPORTZ2:
		DEBUG_LOG(G3D,"DL Viewport param %i: %f", cmd-GE_CMD_VIEWPORTX1, getFloat24(data));
		break;
	case GE_CMD_LIGHTENABLE0:
	case GE_CMD_LIGHTENABLE1:
	case GE_CMD_LIGHTENABLE2:
	case GE_CMD_LIGHTENABLE3:
		DEBUG_LOG(G3D,"DL Light %i enable: %d", cmd-GE_CMD_LIGHTENABLE0, data);
		break;
	case GE_CMD_CULL:
		DEBUG_LOG(G3D,"DL cull: %06x", data);
		break;

	case GE_CMD_LMODE:
		DEBUG_LOG(G3D,"DL Shade mode: %06x", data);
		break;

	case GE_CMD_PATCHDIVISION:
		gstate.patch_div_s = data & 0xFF;
		gstate.patch_div_t = (data >> 8) & 0xFF;
		DEBUG_LOG(G3D, "DL Patch subdivision: %i x %i", gstate.patch_div_s, gstate.patch_div_t);
		break;

	case GE_CMD_MATERIALUPDATE:
		DEBUG_LOG(G3D,"DL Material Update: %d", data);
		break;


	//////////////////////////////////////////////////////////////////
	//	CLEARING
	//////////////////////////////////////////////////////////////////
	case GE_CMD_CLEARMODE:
		// If it becomes a performance problem, check diff&1
		DEBUG_LOG(G3D,"DL Clear mode: %06x", data);
		break;


	//////////////////////////////////////////////////////////////////
	//	ALPHA BLENDING
	//////////////////////////////////////////////////////////////////
	case GE_CMD_ALPHABLENDENABLE:
		DEBUG_LOG(G3D,"DL Alpha blend enable: %d", data);
		break;

	case GE_CMD_BLENDMODE:
		DEBUG_LOG(G3D,"DL Blend mode: %06x", data);
		break;

	case GE_CMD_BLENDFIXEDA:
		DEBUG_LOG(G3D,"DL Blend fix A: %06x", data);
		break;

	case GE_CMD_BLENDFIXEDB:
		DEBUG_LOG(G3D,"DL Blend fix B: %06x", data);
		break;

	case GE_CMD_ALPHATESTENABLE:
		DEBUG_LOG(G3D,"DL Alpha test enable: %d", data);
		// This is done in the shader.
		break;

	case GE_CMD_ALPHATEST:
		DEBUG_LOG(G3D,"DL Alpha test settings");
		break;

	case GE_CMD_TEXFUNC:
		{
			DEBUG_LOG(G3D,"DL TexFunc %i", data&7);
			/*
			int m=GL_MODULATE;
			switch (data & 7)
			{
			case 0: m=GL_MODULATE; break;
			case 1: m=GL_DECAL; break;
			case 2: m=GL_BLEND; break;
			case 3: m=GL_REPLACE; break;
			case 4: m=GL_ADD; break;
			}*/

			/*
			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,			GL_MODULATE);
			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB,			GL_CONSTANT);
			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB,		 GL_SRC_COLOR);
			glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB,			GL_TEXTURE);
			glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB,		 GL_SRC_COLOR);
			glTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE, 1);

			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, m);
			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_MODULATE);*/
			break;
		}
	case GE_CMD_TEXFILTER:
		{
			int min = data & 7;
			int mag = (data >> 8) & 1;
			DEBUG_LOG(G3D,"DL TexFilter min: %i mag: %i", min, mag);
		}

		break;
	//////////////////////////////////////////////////////////////////
	//	Z/STENCIL TESTING
	//////////////////////////////////////////////////////////////////

	case GE_CMD_ZTESTENABLE:
		DEBUG_LOG(G3D,"DL Z test enable: %d", data & 1);
		break;

	case GE_CMD_STENCILTESTENABLE:
		DEBUG_LOG(G3D,"DL Stencil test enable: %d", data);
		break;

	case GE_CMD_ZTEST:
		{
			//glDepthFunc(ztests[data&7]);
			DEBUG_LOG(G3D,"DL Z test mode: %i", data);
		}
		break;

	case GE_CMD_MORPHWEIGHT0:
	case GE_CMD_MORPHWEIGHT1:
	case GE_CMD_MORPHWEIGHT2:
	case GE_CMD_MORPHWEIGHT3:
	case GE_CMD_MORPHWEIGHT4:
	case GE_CMD_MORPHWEIGHT5:
	case GE_CMD_MORPHWEIGHT6:
	case GE_CMD_MORPHWEIGHT7:
		{
			int index = cmd - GE_CMD_MORPHWEIGHT0;
			float weight = getFloat24(data);
			DEBUG_LOG(G3D,"DL MorphWeight %i = %f", index, weight);
			gstate.morphWeights[index] = weight;
		}
		break;
 
	case GE_CMD_DITH0:
	case GE_CMD_DITH1:
	case GE_CMD_DITH2:
	case GE_CMD_DITH3:
		DEBUG_LOG(G3D,"DL DitherMatrix %i = %06x",cmd-GE_CMD_DITH0,data);
		break;

	case GE_CMD_WORLDMATRIXNUMBER:
		DEBUG_LOG(G3D,"DL World matrix # %i", data);
		gstate.worldmtxnum = data&0xF;
		break;

	case GE_CMD_WORLDMATRIXDATA:
		DEBUG_LOG(G3D,"DL World matrix data # %f", getFloat24(data));
		gstate.worldMatrix[gstate.worldmtxnum++] = getFloat24(data);
		break;

	case GE_CMD_VIEWMATRIXNUMBER:
		DEBUG_LOG(G3D,"DL VIEW matrix # %i", data);
		gstate.viewmtxnum = data&0xF;
		break;

	case GE_CMD_VIEWMATRIXDATA:
		DEBUG_LOG(G3D,"DL VIEW matrix data # %f", getFloat24(data));
		gstate.viewMatrix[gstate.viewmtxnum++] = getFloat24(data);
		break;

	case GE_CMD_PROJMATRIXNUMBER:
		DEBUG_LOG(G3D,"DL PROJECTION matrix # %i", data);
		gstate.projmtxnum = data&0xF;
		break;

	case GE_CMD_PROJMATRIXDATA:
		DEBUG_LOG(G3D,"DL PROJECTION matrix data # %f", getFloat24(data));
		gstate.projMatrix[gstate.projmtxnum++] = getFloat24(data);
		break;

	case GE_CMD_TGENMATRIXNUMBER:
		DEBUG_LOG(G3D,"DL TGEN matrix # %i", data);
		gstate.texmtxnum = data&0xF;
		break;

	case GE_CMD_TGENMATRIXDATA:
		DEBUG_LOG(G3D,"DL TGEN matrix data # %f", getFloat24(data));
		gstate.tgenMatrix[gstate.texmtxnum++] = getFloat24(data);
		break;

	case GE_CMD_BONEMATRIXNUMBER:
		DEBUG_LOG(G3D,"DL BONE matrix #%i", data);
		gstate.boneMatrixNumber = data;
		break;

	case GE_CMD_BONEMATRIXDATA:
		DEBUG_LOG(G3D,"DL BONE matrix data #%i %f", gstate.boneMatrixNumber, getFloat24(data));
		gstate.boneMatrix[gstate.boneMatrixNumber++] = getFloat24(data);
		break;

	default:
		DEBUG_LOG(G3D,"DL Unknown: %08x @ %08x", op, dcontext.pc);
		break;

		//ETC...
	}
}

bool NullGPU::InterpretList()
{
	// Reset stackptr for safety
	stackptr = 0;
	u32 op = 0;
	prev = 0;
	finished = false;
	while (!finished)
	{
		if (dcontext.pc == dcontext.stallAddr)
			return false;

		op = Memory::ReadUnchecked_U32(dcontext.pc); //read from memory
		u32 cmd = op >> 24;
		u32 diff = op ^ gstate.cmdmem[cmd];
		gstate.cmdmem[cmd] = op;	 // crashes if I try to put the whole op there??

		ExecuteOp(op, diff);

		dcontext.pc += 4;
		prev = op;
	}
	return true;
}