175 lines
4.6 KiB
C++
175 lines
4.6 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include "BPFunctions.h"
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#include "Common.h"
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#include "RenderBase.h"
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#include "TextureCacheBase.h"
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#include "VertexManagerBase.h"
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#include "VertexShaderManager.h"
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#include "VideoConfig.h"
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bool textureChanged[8];
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const bool renderFog = false;
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namespace BPFunctions
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{
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// ----------------------------------------------
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// State translation lookup tables
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// Reference: Yet Another Gamecube Documentation
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// ----------------------------------------------
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void FlushPipeline()
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{
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VertexManager::Flush();
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}
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void SetGenerationMode(const BPCmd &bp)
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{
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g_renderer->SetGenerationMode();
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}
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void SetScissor(const BPCmd &bp)
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{
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g_renderer->SetScissorRect();
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}
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void SetLineWidth(const BPCmd &bp)
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{
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g_renderer->SetLineWidth();
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}
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void SetDepthMode(const BPCmd &bp)
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{
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g_renderer->SetDepthMode();
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}
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void SetBlendMode(const BPCmd &bp)
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{
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g_renderer->SetBlendMode(false);
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}
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void SetDitherMode(const BPCmd &bp)
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{
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g_renderer->SetDitherMode();
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}
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void SetLogicOpMode(const BPCmd &bp)
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{
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g_renderer->SetLogicOpMode();
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}
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void SetColorMask(const BPCmd &bp)
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{
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g_renderer->SetColorMask();
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}
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void CopyEFB(const BPCmd &bp, const EFBRectangle &rc, const u32 &address, const bool &fromZBuffer, const bool &isIntensityFmt, const u32 ©fmt, const int &scaleByHalf)
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{
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// bpmem.zcontrol.pixel_format to PIXELFMT_Z24 is when the game wants to copy from ZBuffer (Zbuffer uses 24-bit Format)
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if (g_ActiveConfig.bEFBCopyEnable)
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{
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TextureCache::CopyRenderTargetToTexture(address, fromZBuffer, isIntensityFmt, copyfmt, !!scaleByHalf, rc);
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}
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}
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/* Explanation of the magic behind ClearScreen:
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There's numerous possible formats for the pixel data in the EFB.
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However, in the HW accelerated plugins we're always using RGBA8
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for the EFB format, which causes some problems:
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- We're using an alpha channel although the game doesn't
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- If the actual EFB format is RGBA6_Z24 or R5G6B5_Z16, we are using more bits per channel than the native HW
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To properly emulate the above points, we're doing the following:
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(1)
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- disable alpha channel writing of any kind of rendering if the actual EFB format doesn't use an alpha channel
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- NOTE: Always make sure that the EFB has been cleared to an alpha value of 0xFF in this case!
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- Same for color channels, these need to be cleared to 0x00 though.
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(2)
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- convert the RGBA8 color to RGBA6/RGB8/RGB565 and convert it to RGBA8 again
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- convert the Z24 depth value to Z16 and back to Z24
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*/
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void ClearScreen(const BPCmd &bp, const EFBRectangle &rc)
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{
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bool colorEnable = bpmem.blendmode.colorupdate;
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bool alphaEnable = bpmem.blendmode.alphaupdate;
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bool zEnable = bpmem.zmode.updateenable;
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// (1): Disable unused color channels
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if (bpmem.zcontrol.pixel_format == PIXELFMT_RGB8_Z24 ||
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bpmem.zcontrol.pixel_format == PIXELFMT_RGB565_Z16 ||
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bpmem.zcontrol.pixel_format == PIXELFMT_Z24)
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{
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alphaEnable = false;
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}
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if (colorEnable || alphaEnable || zEnable)
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{
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u32 color = (bpmem.clearcolorAR << 16) | bpmem.clearcolorGB;
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u32 z = bpmem.clearZValue;
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// (2) drop additional accuracy
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if (bpmem.zcontrol.pixel_format == PIXELFMT_RGBA6_Z24)
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{
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color = RGBA8ToRGBA6ToRGBA8(color);
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}
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else if (bpmem.zcontrol.pixel_format == PIXELFMT_RGB565_Z16)
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{
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color = RGBA8ToRGB565ToRGBA8(color);
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z = Z24ToZ16ToZ24(z);
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}
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g_renderer->ClearScreen(rc, colorEnable, alphaEnable, zEnable, color, z);
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}
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}
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void RestoreRenderState(const BPCmd &bp)
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{
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g_renderer->RestoreAPIState();
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}
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bool GetConfig(const int &type)
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{
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switch (type)
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{
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case CONFIG_ISWII:
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return g_VideoInitialize.bWii;
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case CONFIG_DISABLEFOG:
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return g_ActiveConfig.bDisableFog;
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case CONFIG_SHOWEFBREGIONS:
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return false;
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default:
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PanicAlert("GetConfig Error: Unknown Config Type!");
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return false;
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}
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}
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u8 *GetPointer(const u32 &address)
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{
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return g_VideoInitialize.pGetMemoryPointer(address);
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}
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void SetTextureMode(const BPCmd &bp)
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{
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g_renderer->SetSamplerState(bp.address & 3, (bp.address & 0xE0) == 0xA0);
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}
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void SetInterlacingMode(const BPCmd &bp)
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{
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// TODO
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}
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};
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