// Copyright (C) 2003 Dolphin 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.

// 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 SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/

#include "BPFunctions.h"
#include "Common.h"
#include "RenderBase.h"
#include "TextureCacheBase.h"
#include "VertexManagerBase.h"
#include "VertexShaderManager.h"
#include "VideoConfig.h"

bool textureChanged[8];
const bool renderFog = false;

namespace BPFunctions
{
// ----------------------------------------------
// State translation lookup tables
// Reference: Yet Another Gamecube Documentation
// ----------------------------------------------


void FlushPipeline()
{
	VertexManager::Flush();
}

void SetGenerationMode(const BPCmd &bp)
{
	g_renderer->SetGenerationMode();
}

void SetScissor(const BPCmd &bp)
{
	g_renderer->SetScissorRect();
}

void SetLineWidth(const BPCmd &bp)
{
	g_renderer->SetLineWidth();
}

void SetDepthMode(const BPCmd &bp)
{
	g_renderer->SetDepthMode();
}

void SetBlendMode(const BPCmd &bp)
{
	g_renderer->SetBlendMode(false);
}
void SetDitherMode(const BPCmd &bp)
{
	g_renderer->SetDitherMode();
}
void SetLogicOpMode(const BPCmd &bp)
{
	g_renderer->SetLogicOpMode();
}

void SetColorMask(const BPCmd &bp)
{
	g_renderer->SetColorMask();
}

void CopyEFB(const BPCmd &bp, const EFBRectangle &rc, const u32 &address, const bool &fromZBuffer, const bool &isIntensityFmt, const u32 &copyfmt, const int &scaleByHalf)
{
	// bpmem.zcontrol.pixel_format to PIXELFMT_Z24 is when the game wants to copy from ZBuffer (Zbuffer uses 24-bit Format)
	if (g_ActiveConfig.bEFBCopyEnable)
	{
		TextureCache::CopyRenderTargetToTexture(address, fromZBuffer, isIntensityFmt, copyfmt, !!scaleByHalf, rc);
	}
}

void ClearScreen(const BPCmd &bp, const EFBRectangle &rc)
{
	bool colorEnable = bpmem.blendmode.colorupdate;
	bool alphaEnable = (bpmem.zcontrol.pixel_format == PIXELFMT_RGBA6_Z24 && bpmem.blendmode.alphaupdate);
	bool zEnable = bpmem.zmode.updateenable;

	if (colorEnable || alphaEnable || zEnable)
	{
		u32 color = (bpmem.clearcolorAR << 16) | bpmem.clearcolorGB;
		u32 z = bpmem.clearZValue;
		
		// texture formats logic transposition from "EFB Copy to Texture" to "Copy Clear Screen" concepts.
		// this it's a deduction without assurance. Ref. (p.12(Nintendo Co., Ltd. US 2010/0073394 A1))
		UPE_Copy EFB_copy = bpmem.triggerEFBCopy; 

		// since this is an early implementation and we can't be sure, forward clauses are fairly restrictive.
		if (EFB_copy.tp_realFormat() == 6)	// RGBA8
			color |= (!EFB_copy.intensity_fmt && z > 0) ? 0xFF000000 : 0x0;
		else if (EFB_copy.tp_realFormat() == 7)	// A8
			color |= ((!EFB_copy.intensity_fmt && bpmem.zcontrol.pixel_format > 3) || z > 0) ? 0xFF000000 : 0x0;
		
		g_renderer->ClearScreen(rc, colorEnable, zEnable, color, z);
	}
}

void RestoreRenderState(const BPCmd &bp)
{
	g_renderer->RestoreAPIState();
}

bool GetConfig(const int &type)
{
	switch (type)
	{
	case CONFIG_ISWII:
		return g_VideoInitialize.bWii;
	case CONFIG_DISABLEFOG:
		return g_ActiveConfig.bDisableFog;
	case CONFIG_SHOWEFBREGIONS:
		return false;
	default:
		PanicAlert("GetConfig Error: Unknown Config Type!");
		return false;
	}
}

u8 *GetPointer(const u32 &address)
{
	return g_VideoInitialize.pGetMemoryPointer(address);
}

void SetTextureMode(const BPCmd &bp)
{
	g_renderer->SetSamplerState(bp.address & 3, (bp.address & 0xE0) == 0xA0);
}

void SetInterlacingMode(const BPCmd &bp)
{
	// TODO
}

};