dolphin/Source/Plugins/Plugin_VideoSoftware/Src/HwRasterizer.cpp

192 lines
5.7 KiB
C++

// Copyright (C) 2003-2009 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 "Common.h"
#include "MemoryUtil.h"
#include <VideoCommon.h>
#include "BPMemLoader.h"
#include "HwRasterizer.h"
#include "NativeVertexFormat.h"
#include "DebugUtil.h"
#define TEMP_SIZE (1024*1024*4)
namespace HwRasterizer
{
float efbHalfWidth;
float efbHalfHeight;
bool hasTexture;
u8 *temp;
void Init()
{
efbHalfWidth = EFB_WIDTH / 2.0f;
efbHalfHeight = 480 / 2.0f;
temp = (u8*)AllocateMemoryPages(TEMP_SIZE);
}
void LoadTexture()
{
FourTexUnits &texUnit = bpmem.tex[0];
u32 imageAddr = texUnit.texImage3[0].image_base;
TexCacheEntry &cacheEntry = textures[imageAddr];
cacheEntry.Update();
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, cacheEntry.texture);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, texUnit.texMode0[0].mag_filter ? GL_LINEAR : GL_NEAREST);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, (texUnit.texMode0[0].min_filter >= 4) ? GL_LINEAR : GL_NEAREST);
}
void BeginTriangles()
{
// disabling depth test sometimes allows more things to be visible
glEnable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
hasTexture = bpmem.tevorders[0].enable0;
if (hasTexture)
LoadTexture();
}
void EndTriangles()
{
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
glDisable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
}
void DrawColorVertex(OutputVertexData *v)
{
glColor3ub(v->color[0][OutputVertexData::RED_C], v->color[0][OutputVertexData::GRN_C], v->color[0][OutputVertexData::BLU_C]);
glVertex3f(v->screenPosition.x / efbHalfWidth - 1.0f, 1.0f - v->screenPosition.y / efbHalfHeight, v->screenPosition.z / (float)0x00ffffff);
}
void DrawTextureVertex(OutputVertexData *v)
{
float s = v->texCoords[0].x;
float t = v->texCoords[0].y;
glTexCoord2f(s, t);
float x = (v->screenPosition.x / efbHalfWidth) - 1.0f;
float y = 1.0f - (v->screenPosition.y / efbHalfHeight);
float z = v->screenPosition.z;
glVertex3f(x, y, z);
}
void DrawTriangleFrontFace(OutputVertexData *v0, OutputVertexData *v1, OutputVertexData *v2)
{
glBegin(GL_TRIANGLES);
if (hasTexture)
{
DrawTextureVertex(v0);
DrawTextureVertex(v1);
DrawTextureVertex(v2);
}
else
{
DrawColorVertex(v0);
DrawColorVertex(v1);
DrawColorVertex(v2);
}
glEnd();
}
void Clear()
{
u8 r = (bpmem.clearcolorAR & 0x00ff);
u8 g = (bpmem.clearcolorGB & 0xff00) >> 8;
u8 b = (bpmem.clearcolorGB & 0x00ff);
u8 a = (bpmem.clearcolorAR & 0xff00) >> 8;
GLfloat left = (GLfloat)bpmem.copyTexSrcXY.x / efbHalfWidth - 1.0f;
GLfloat top = 1.0f - (GLfloat)bpmem.copyTexSrcXY.y / efbHalfHeight;
GLfloat right = (GLfloat)(left + bpmem.copyTexSrcWH.x + 1) / efbHalfWidth - 1.0f;
GLfloat bottom = 1.0f - (GLfloat)(top + bpmem.copyTexSrcWH.y + 1) / efbHalfHeight;
GLfloat depth = (GLfloat)bpmem.clearZValue / (GLfloat)0x00ffffff;
glBegin(GL_QUADS);
glColor4ub(r, g, b, a);
glVertex3f(left, top, depth);
glColor4ub(r, g, b, a);
glVertex3f(right, top, depth);
glColor4ub(r, g, b, a);
glVertex3f(right, bottom, depth);
glColor4ub(r, g, b, a);
glVertex3f(left, bottom, depth);
glEnd();
}
TexCacheEntry::TexCacheEntry()
{
Create();
}
void TexCacheEntry::Create()
{
FourTexUnits &texUnit = bpmem.tex[0];
texImage0.hex = texUnit.texImage0[0].hex;
texImage1.hex = texUnit.texImage1[0].hex;
texImage2.hex = texUnit.texImage2[0].hex;
texImage3.hex = texUnit.texImage3[0].hex;
texTlut.hex = texUnit.texTlut[0].hex;
int width = texImage0.width;
int height = texImage0.height;
DebugUtil::GetTextureBGRA(temp, 0, 0, width, height);
glGenTextures(1, (GLuint *)&texture);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, texture);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, (GLsizei)width, (GLsizei)height, 0, GL_BGRA, GL_UNSIGNED_BYTE, temp);
}
void TexCacheEntry::Destroy()
{
if (texture == 0)
return;
glDeleteTextures(1, &texture);
texture = 0;
}
void TexCacheEntry::Update()
{
FourTexUnits &texUnit = bpmem.tex[0];
// extra checks cause textures to be reloaded much more
if (texUnit.texImage0[0].hex != texImage0.hex ||
//texUnit.texImage1[0].hex != texImage1.hex ||
//texUnit.texImage2[0].hex != texImage2.hex ||
texUnit.texImage3[0].hex != texImage3.hex ||
texUnit.texTlut[0].hex != texTlut.hex)
{
Destroy();
Create();
}
}
}