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project64/Source/Glide64/FBtoScreen.cpp

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/*
* Glide64 - Glide video plugin for Nintendo 64 emulators.
* Copyright (c) 2002 Dave2001
* Copyright (c) 2003-2009 Sergey 'Gonetz' Lipski
*
* 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; either version 2 of the License, or
* any later version.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
//****************************************************************
//
// Glide64 - Glide Plugin for Nintendo 64 emulators
// Project started on December 29th, 2001
//
// Authors:
// Dave2001, original author, founded the project in 2001, left it in 2002
// Gugaman, joined the project in 2002, left it in 2002
// Sergey 'Gonetz' Lipski, joined the project in 2002, main author since fall of 2002
// Hiroshi 'KoolSmoky' Morii, joined the project in 2007
//
//****************************************************************
//
// To modify Glide64:
// * Write your name and (optional)email, commented by your work, so I know who did it, and so that you can find which parts you modified when it comes time to send it to me.
// * Do NOT send me the whole project or file that you modified. Take out your modified code sections, and tell me where to put them. If people sent the whole thing, I would have many different versions, but no idea how to combine them all.
//
//****************************************************************
//
// Draw N64 frame buffer to screen.
// Created by Gonetz, 2007
//
//****************************************************************
#include "Gfx_1.3.h"
#include "FBtoScreen.h"
#include "TexCache.h"
static int SetupFBtoScreenCombiner(uint32_t texture_size, uint32_t opaque)
{
int tmu;
if (voodoo.tmem_ptr[GR_TMU0]+texture_size < voodoo.tex_max_addr[0])
{
tmu = GR_TMU0;
grTexCombine( GR_TMU1,
GR_COMBINE_FUNCTION_NONE,
GR_COMBINE_FACTOR_NONE,
GR_COMBINE_FUNCTION_NONE,
GR_COMBINE_FACTOR_NONE,
FXFALSE,
FXFALSE );
grTexCombine( GR_TMU0,
GR_COMBINE_FUNCTION_LOCAL,
GR_COMBINE_FACTOR_NONE,
GR_COMBINE_FUNCTION_LOCAL,
GR_COMBINE_FACTOR_NONE,
FXFALSE,
FXFALSE );
}
else
{
if (voodoo.tmem_ptr[GR_TMU1]+texture_size >= voodoo.tex_max_addr[1])
ClearCache ();
tmu = GR_TMU1;
grTexCombine( GR_TMU1,
GR_COMBINE_FUNCTION_LOCAL,
GR_COMBINE_FACTOR_NONE,
GR_COMBINE_FUNCTION_LOCAL,
GR_COMBINE_FACTOR_NONE,
FXFALSE,
FXFALSE );
grTexCombine( GR_TMU0,
GR_COMBINE_FUNCTION_SCALE_OTHER,
GR_COMBINE_FACTOR_ONE,
GR_COMBINE_FUNCTION_SCALE_OTHER,
GR_COMBINE_FACTOR_ONE,
FXFALSE,
FXFALSE );
}
int filter = (rdp.filter_mode!=2)?GR_TEXTUREFILTER_POINT_SAMPLED:GR_TEXTUREFILTER_BILINEAR;
grTexFilterMode (tmu, filter, filter);
grTexClampMode (tmu,
GR_TEXTURECLAMP_CLAMP,
GR_TEXTURECLAMP_CLAMP);
// grConstantColorValue (0xFFFFFFFF);
grColorCombine (GR_COMBINE_FUNCTION_SCALE_OTHER,
GR_COMBINE_FACTOR_ONE,
GR_COMBINE_LOCAL_NONE,
GR_COMBINE_OTHER_TEXTURE,
// GR_COMBINE_OTHER_CONSTANT,
FXFALSE);
grAlphaCombine (GR_COMBINE_FUNCTION_SCALE_OTHER,
GR_COMBINE_FACTOR_ONE,
GR_COMBINE_LOCAL_NONE,
GR_COMBINE_OTHER_TEXTURE,
FXFALSE);
if (opaque)
{
grAlphaTestFunction (GR_CMP_ALWAYS);
grAlphaBlendFunction( GR_BLEND_ONE,
GR_BLEND_ZERO,
GR_BLEND_ONE,
GR_BLEND_ZERO);
}
else
{
grAlphaBlendFunction( GR_BLEND_SRC_ALPHA,
GR_BLEND_ONE_MINUS_SRC_ALPHA,
GR_BLEND_ONE,
GR_BLEND_ZERO);
}
grDepthBufferFunction (GR_CMP_ALWAYS);
grCullMode(GR_CULL_DISABLE);
grDepthMask (FXFALSE);
rdp.update |= UPDATE_COMBINE | UPDATE_ZBUF_ENABLED | UPDATE_CULL_MODE;
return tmu;
}
static void DrawRE2Video(FB_TO_SCREEN_INFO & fb_info, float scale)
{
float scale_y = (float)fb_info.width/rdp.vi_height;
float height = settings.scr_res_x/scale_y;
float ul_x = 0.5f;
float ul_y = (settings.scr_res_y - height)/2.0f;
float lr_y = settings.scr_res_y - ul_y - 1.0f;
float lr_x = settings.scr_res_x - 1.0f;
float lr_u = (fb_info.width - 1)*scale;
float lr_v = (fb_info.height - 1)*scale;
VERTEX v[4] = {
{ ul_x, ul_y, 1, 1, 0.5f, 0.5f, 0.5f, 0.5f, {0.5f, 0.5f, 0.5f, 0.5f} },
{ lr_x, ul_y, 1, 1, lr_u, 0.5f, lr_u, 0.5f, {lr_u, 0.5f, lr_u, 0.5f} },
{ ul_x, lr_y, 1, 1, 0.5f, lr_v, 0.5f, lr_v, {0.5f, lr_v, 0.5f, lr_v} },
{ lr_x, lr_y, 1, 1, lr_u, lr_v, lr_u, lr_v, {lr_u, lr_v, lr_u, lr_v} }
};
grDrawTriangle (&v[0], &v[2], &v[1]);
grDrawTriangle (&v[2], &v[3], &v[1]);
}
static void DrawRE2Video256(FB_TO_SCREEN_INFO & fb_info)
{
FRDP("DrawRE2Video256. ul_x=%d, ul_y=%d, lr_x=%d, lr_y=%d, size=%d, addr=%08lx\n", fb_info.ul_x, fb_info.ul_y, fb_info.lr_x, fb_info.lr_y, fb_info.size, fb_info.addr);
uint32_t * src = (uint32_t*)(gfx.RDRAM+fb_info.addr);
GrTexInfo t_info;
t_info.smallLodLog2 = GR_LOD_LOG2_256;
t_info.largeLodLog2 = GR_LOD_LOG2_256;
t_info.aspectRatioLog2 = GR_ASPECT_LOG2_1x1;
uint16_t * tex = (uint16_t*)texture_buffer;
uint16_t * dst = tex;
uint32_t col;
uint8_t r, g, b;
fb_info.height = minval(256, fb_info.height);
for (uint32_t h = 0; h < fb_info.height; h++)
{
for (uint32_t w = 0; w < 256; w++)
{
col = *(src++);
r = (uint8_t)((col >> 24)&0xFF);
r = (uint8_t)((float)r / 255.0f * 31.0f);
g = (uint8_t)((col >> 16)&0xFF);
g = (uint8_t)((float)g / 255.0f * 63.0f);
b = (uint8_t)((col >> 8)&0xFF);
b = (uint8_t)((float)b / 255.0f * 31.0f);
*(dst++) = (r << 11) | (g << 5) | b;
}
src += (fb_info.width - 256);
}
t_info.format = GR_TEXFMT_RGB_565;
t_info.data = tex;
int tmu = SetupFBtoScreenCombiner(grTexTextureMemRequired(GR_MIPMAPLEVELMASK_BOTH, &t_info), fb_info.opaque);
grTexDownloadMipMap (tmu,
voodoo.tex_min_addr[tmu]+voodoo.tmem_ptr[tmu],
GR_MIPMAPLEVELMASK_BOTH,
&t_info);
grTexSource (tmu,
voodoo.tex_min_addr[tmu]+voodoo.tmem_ptr[tmu],
GR_MIPMAPLEVELMASK_BOTH,
&t_info);
DrawRE2Video(fb_info, 1.0f);
}
static void DrawFrameBufferToScreen256(FB_TO_SCREEN_INFO & fb_info)
{
if (settings.hacks&hack_RE2)
{
DrawRE2Video256(fb_info);
return;
}
FRDP("DrawFrameBufferToScreen256. ul_x=%d, ul_y=%d, lr_x=%d, lr_y=%d, size=%d, addr=%08lx\n", fb_info.ul_x, fb_info.ul_y, fb_info.lr_x, fb_info.lr_y, fb_info.size, fb_info.addr);
uint32_t width = fb_info.lr_x - fb_info.ul_x + 1;
uint32_t height = fb_info.lr_y - fb_info.ul_y + 1;
GrTexInfo t_info;
uint8_t * image = gfx.RDRAM+fb_info.addr;
uint32_t width256 = ((width-1) >> 8) + 1;
uint32_t height256 = ((height-1) >> 8) + 1;
t_info.smallLodLog2 = t_info.largeLodLog2 = GR_LOD_LOG2_256;
t_info.aspectRatioLog2 = GR_ASPECT_LOG2_1x1;
t_info.format = GR_TEXFMT_ARGB_1555;
uint16_t * tex = (uint16_t*)texture_buffer;
t_info.data = tex;
uint32_t tex_size = grTexTextureMemRequired (GR_MIPMAPLEVELMASK_BOTH, &t_info);
int tmu = SetupFBtoScreenCombiner(tex_size*width256*height256, fb_info.opaque);
uint16_t * src = (uint16_t*)image;
src += fb_info.ul_x + fb_info.ul_y * fb_info.width;
uint32_t * src32 = (uint32_t*)image;
src32 += fb_info.ul_x + fb_info.ul_y * fb_info.width;
uint32_t w_tail = width%256;
uint32_t h_tail = height%256;
uint16_t c;
uint32_t c32;
uint32_t idx;
uint32_t bound = BMASK+1-fb_info.addr;
bound = fb_info.size == 2 ? bound >> 1 : bound >> 2;
uint8_t r, g, b, a;
uint32_t cur_width, cur_height, cur_tail;
uint32_t tex_adr = voodoo.tex_min_addr[tmu]+voodoo.tmem_ptr[tmu];
if ((voodoo.tmem_ptr[tmu] < TEXMEM_2MB_EDGE) && (voodoo.tmem_ptr[tmu]+tex_size*width256*height256 > TEXMEM_2MB_EDGE))
{
tex_adr = TEXMEM_2MB_EDGE;
}
for (uint32_t h = 0; h < height256; h++)
{
for (uint32_t w = 0; w < width256; w++)
{
cur_width = (256*(w+1) < width) ? 256 : w_tail;
cur_height = (256*(h+1) < height) ? 256 : h_tail;
cur_tail = 256 - cur_width;
uint16_t * dst = tex;
if (fb_info.size == 2)
{
for (uint32_t y=0; y < cur_height; y++)
{
for (uint32_t x=0; x < cur_width; x++)
{
idx = (x+256*w+(y+256*h)*fb_info.width)^1;
if (idx >= bound)
break;
c = src[idx];
*(dst++) = (c >> 1) | ((c&1)<<15);
}
dst += cur_tail;
}
}
else
{
for (uint32_t y=0; y < cur_height; y++)
{
for (uint32_t x=0; x < cur_width; x++)
{
idx = (x+256*w+(y+256*h)*fb_info.width);
if (idx >= bound)
break;
c32 = src32[idx];
r = (uint8_t)((c32 >> 24)&0xFF);
r = (uint8_t)((float)r / 255.0f * 31.0f);
g = (uint8_t)((c32 >> 16)&0xFF);
g = (uint8_t)((float)g / 255.0f * 63.0f);
b = (uint8_t)((c32 >> 8)&0xFF);
b = (uint8_t)((float)b / 255.0f * 31.0f);
a = (c32&0xFF) ? 1 : 0;
*(dst++) = (a<<15) | (r << 10) | (g << 5) | b;
}
dst += cur_tail;
}
}
grTexDownloadMipMap (tmu, tex_adr, GR_MIPMAPLEVELMASK_BOTH, &t_info);
grTexSource (tmu, tex_adr, GR_MIPMAPLEVELMASK_BOTH, &t_info);
tex_adr += tex_size;
float ul_x = (float)(fb_info.ul_x + 256*w);
float ul_y = (float)(fb_info.ul_y + 256*h);
float lr_x = (ul_x + (float)(cur_width)) * rdp.scale_x;
float lr_y = (ul_y + (float)(cur_height)) * rdp.scale_y;
ul_x *= rdp.scale_x;
ul_y *= rdp.scale_y;
ul_x += rdp.offset_x;
ul_y += rdp.offset_y;
lr_x += rdp.offset_x;
lr_y += rdp.offset_y;
float lr_u = (float)(cur_width-1);
float lr_v = (float)(cur_height-1);
// Make the vertices
VERTEX v[4] = {
{ ul_x, ul_y, 1, 1, 0.5f, 0.5f, 0.5f, 0.5f, {0.5f, 0.5f, 0.5f, 0.5f} },
{ lr_x, ul_y, 1, 1, lr_u, 0.5f, lr_u, 0.5f, {lr_u, 0.5f, lr_u, 0.5f} },
{ ul_x, lr_y, 1, 1, 0.5f, lr_v, 0.5f, lr_v, {0.5f, lr_v, 0.5f, lr_v} },
{ lr_x, lr_y, 1, 1, lr_u, lr_v, lr_u, lr_v, {lr_u, lr_v, lr_u, lr_v} }
};
grDrawTriangle (&v[0], &v[2], &v[1]);
grDrawTriangle (&v[2], &v[3], &v[1]);
}
}
}
bool DrawFrameBufferToScreen(FB_TO_SCREEN_INFO & fb_info)
{
if (fb_info.width < 200 || fb_info.size < 2)
return false;
uint32_t width = fb_info.lr_x - fb_info.ul_x + 1;
uint32_t height = fb_info.lr_y - fb_info.ul_y + 1;
uint32_t max_size = minval(voodoo.max_tex_size, 512);
if (width > (uint32_t)max_size || height > (uint32_t)max_size)
{
DrawFrameBufferToScreen256(fb_info);
return true;
}
FRDP("DrawFrameBufferToScreen. ul_x=%d, ul_y=%d, lr_x=%d, lr_y=%d, size=%d, addr=%08lx\n", fb_info.ul_x, fb_info.ul_y, fb_info.lr_x, fb_info.lr_y, fb_info.size, fb_info.addr);
GrTexInfo t_info;
uint8_t * image = gfx.RDRAM+fb_info.addr;
uint32_t texwidth;
float scale;
if (width <= 256)
{
texwidth = 256;
scale = 1.0f;
t_info.smallLodLog2 = t_info.largeLodLog2 = GR_LOD_LOG2_256;
}
else
{
texwidth = 512;
scale = 0.5f;
t_info.smallLodLog2 = t_info.largeLodLog2 = GR_LOD_LOG2_512;
}
if (height <= (texwidth>>1))
{
t_info.aspectRatioLog2 = GR_ASPECT_LOG2_2x1;
}
else
{
t_info.aspectRatioLog2 = GR_ASPECT_LOG2_1x1;
}
if (fb_info.size == 2)
{
uint16_t * tex = (uint16_t*)texture_buffer;
uint16_t * dst = tex;
uint16_t * src = (uint16_t*)image;
src += fb_info.ul_x + fb_info.ul_y * fb_info.width;
uint16_t c;
uint32_t idx;
const uint32_t bound = (BMASK+1-fb_info.addr) >> 1;
bool empty = true;
for (uint32_t y=0; y < height; y++)
{
for (uint32_t x=0; x < width; x++)
{
idx = (x+y*fb_info.width)^1;
if (idx >= bound)
break;
c = src[idx];
if (c) empty = false;
*(dst++) = (c >> 1) | ((c&1)<<15);
}
dst += texwidth-width;
}
if (empty)
return false;
t_info.format = GR_TEXFMT_ARGB_1555;
t_info.data = tex;
}
else
{
uint32_t * tex = (uint32_t*)texture_buffer;
uint32_t * dst = tex;
uint32_t * src = (uint32_t*)image;
src += fb_info.ul_x + fb_info.ul_y * fb_info.width;
uint32_t col;
uint32_t idx;
const uint32_t bound = (BMASK+1-fb_info.addr) >> 2;
for (uint32_t y=0; y < height; y++)
{
for (uint32_t x=0; x < width; x++)
{
idx = x+y*fb_info.width;
if (idx >= bound)
break;
col = src[idx];
*(dst++) = (col >> 8) | 0xFF000000;
}
dst += texwidth-width;
}
t_info.format = GR_TEXFMT_ARGB_8888;
t_info.data = tex;
}
int tmu = SetupFBtoScreenCombiner(grTexTextureMemRequired(GR_MIPMAPLEVELMASK_BOTH, &t_info), fb_info.opaque);
grTexDownloadMipMap (tmu,
voodoo.tex_min_addr[tmu]+voodoo.tmem_ptr[tmu],
GR_MIPMAPLEVELMASK_BOTH,
&t_info);
grTexSource (tmu,
voodoo.tex_min_addr[tmu]+voodoo.tmem_ptr[tmu],
GR_MIPMAPLEVELMASK_BOTH,
&t_info);
if (settings.hacks&hack_RE2)
{
DrawRE2Video(fb_info, scale);
}
else
{
float ul_x = fb_info.ul_x * rdp.scale_x + rdp.offset_x;
float ul_y = fb_info.ul_y * rdp.scale_y + rdp.offset_y;
float lr_x = fb_info.lr_x * rdp.scale_x + rdp.offset_x;
float lr_y = fb_info.lr_y * rdp.scale_y + rdp.offset_y;
float lr_u = (width-1)*scale;
float lr_v = (height-1)*scale;
// Make the vertices
VERTEX v[4] = {
{ ul_x, ul_y, 1, 1, 0.5f, 0.5f, 0.5f, 0.5f, {0.5f, 0.5f, 0.5f, 0.5f} },
{ lr_x, ul_y, 1, 1, lr_u, 0.5f, lr_u, 0.5f, {lr_u, 0.5f, lr_u, 0.5f} },
{ ul_x, lr_y, 1, 1, 0.5f, lr_v, 0.5f, lr_v, {0.5f, lr_v, 0.5f, lr_v} },
{ lr_x, lr_y, 1, 1, lr_u, lr_v, lr_u, lr_v, {lr_u, lr_v, lr_u, lr_v} }
};
grDrawTriangle (&v[0], &v[2], &v[1]);
grDrawTriangle (&v[2], &v[3], &v[1]);
}
return true;
}
static void DrawDepthBufferToScreen256(FB_TO_SCREEN_INFO & fb_info)
{
FRDP("DrawDepthBufferToScreen256. ul_x=%d, ul_y=%d, lr_x=%d, lr_y=%d, size=%d, addr=%08lx\n", fb_info.ul_x, fb_info.ul_y, fb_info.lr_x, fb_info.lr_y, fb_info.size, fb_info.addr);
uint32_t width = fb_info.lr_x - fb_info.ul_x + 1;
uint32_t height = fb_info.lr_y - fb_info.ul_y + 1;
GrTexInfo t_info;
uint8_t * image = gfx.RDRAM+fb_info.addr;
uint32_t width256 = ((width-1) >> 8) + 1;
uint32_t height256 = ((height-1) >> 8) + 1;
t_info.smallLodLog2 = t_info.largeLodLog2 = GR_LOD_LOG2_256;
t_info.aspectRatioLog2 = GR_ASPECT_LOG2_1x1;
t_info.format = GR_TEXFMT_ALPHA_INTENSITY_88;
uint16_t * tex = (uint16_t*)texture_buffer;
t_info.data = tex;
uint32_t tex_size = grTexTextureMemRequired (GR_MIPMAPLEVELMASK_BOTH, &t_info);
int tmu = SetupFBtoScreenCombiner(tex_size*width256*height256, fb_info.opaque);
grConstantColorValue (rdp.fog_color);
grColorCombine (GR_COMBINE_FUNCTION_SCALE_OTHER,
GR_COMBINE_FACTOR_ONE,
GR_COMBINE_LOCAL_NONE,
GR_COMBINE_OTHER_CONSTANT,
FXFALSE);
uint16_t * src = (uint16_t*)image;
src += fb_info.ul_x + fb_info.ul_y * fb_info.width;
uint32_t w_tail = width%256;
uint32_t h_tail = height%256;
uint32_t cur_width, cur_height, cur_tail;
uint32_t tex_adr = voodoo.tex_min_addr[tmu]+voodoo.tmem_ptr[tmu];
if ((voodoo.tmem_ptr[tmu] < TEXMEM_2MB_EDGE) && (voodoo.tmem_ptr[tmu]+tex_size*width256*height256 > TEXMEM_2MB_EDGE))
{
tex_adr = TEXMEM_2MB_EDGE;
}
for (uint32_t h = 0; h < height256; h++)
{
for (uint32_t w = 0; w < width256; w++)
{
cur_width = (256*(w+1) < width) ? 256 : w_tail;
cur_height = (256*(h+1) < height) ? 256 : h_tail;
cur_tail = 256 - cur_width;
uint16_t * dst = tex;
for (uint32_t y=0; y < cur_height; y++)
{
for (uint32_t x=0; x < cur_width; x++)
{
*(dst++) = rdp.pal_8[src[(x+256*w+(y+256*h)*fb_info.width)^1]>>8];
}
dst += cur_tail;
}
grTexDownloadMipMap (tmu, tex_adr, GR_MIPMAPLEVELMASK_BOTH, &t_info);
grTexSource (tmu, tex_adr, GR_MIPMAPLEVELMASK_BOTH, &t_info);
tex_adr += tex_size;
float ul_x = (float)(fb_info.ul_x + 256*w);
float ul_y = (float)(fb_info.ul_y + 256*h);
float lr_x = (ul_x + (float)(cur_width)) * rdp.scale_x + rdp.offset_x;
float lr_y = (ul_y + (float)(cur_height)) * rdp.scale_y + rdp.offset_y;
ul_x = ul_x * rdp.scale_x + rdp.offset_x;
ul_y = ul_y * rdp.scale_y + rdp.offset_y;
float lr_u = (float)(cur_width-1);
float lr_v = (float)(cur_height-1);
// Make the vertices
VERTEX v[4] = {
{ ul_x, ul_y, 1, 1, 0.5f, 0.5f, 0.5f, 0.5f, {0.5f, 0.5f, 0.5f, 0.5f} },
{ lr_x, ul_y, 1, 1, lr_u, 0.5f, lr_u, 0.5f, {lr_u, 0.5f, lr_u, 0.5f} },
{ ul_x, lr_y, 1, 1, 0.5f, lr_v, 0.5f, lr_v, {0.5f, lr_v, 0.5f, lr_v} },
{ lr_x, lr_y, 1, 1, lr_u, lr_v, lr_u, lr_v, {lr_u, lr_v, lr_u, lr_v} }
};
grDrawTriangle (&v[0], &v[2], &v[1]);
grDrawTriangle (&v[2], &v[3], &v[1]);
}
}
}
static void DrawHiresDepthBufferToScreen(FB_TO_SCREEN_INFO & fb_info)
{
FRDP("DrawHiresDepthBufferToScreen. ul_x=%d, ul_y=%d, lr_x=%d, lr_y=%d, size=%d, addr=%08lx\n", fb_info.ul_x, fb_info.ul_y, fb_info.lr_x, fb_info.lr_y, fb_info.size, fb_info.addr);
GrTexInfo t_info;
float scale = 0.25f;
GrLOD_t LOD = GR_LOD_LOG2_1024;
if (settings.scr_res_x > 1024)
{
scale = 0.125f;
LOD = GR_LOD_LOG2_2048;
}
t_info.format = GR_TEXFMT_ALPHA_INTENSITY_88;
t_info.smallLodLog2 = t_info.largeLodLog2 = LOD;
t_info.aspectRatioLog2 = GR_ASPECT_LOG2_1x1;
grConstantColorValue (rdp.fog_color);
grColorCombine (GR_COMBINE_FUNCTION_LOCAL,
GR_COMBINE_FACTOR_NONE,
GR_COMBINE_LOCAL_CONSTANT,
GR_COMBINE_OTHER_NONE,
FXFALSE);
grAlphaCombine (GR_COMBINE_FUNCTION_SCALE_OTHER,
GR_COMBINE_FACTOR_ONE,
GR_COMBINE_LOCAL_NONE,
GR_COMBINE_OTHER_TEXTURE,
FXFALSE);
grAlphaBlendFunction( GR_BLEND_SRC_ALPHA,
GR_BLEND_ONE_MINUS_SRC_ALPHA,
GR_BLEND_ONE,
GR_BLEND_ZERO);
grDepthBufferFunction (GR_CMP_ALWAYS);
grDepthMask (FXFALSE);
grCullMode (GR_CULL_DISABLE);
grTexCombine( GR_TMU1,
GR_COMBINE_FUNCTION_NONE,
GR_COMBINE_FACTOR_NONE,
GR_COMBINE_FUNCTION_NONE,
GR_COMBINE_FACTOR_NONE,
FXFALSE,
FXFALSE );
grTexCombine( GR_TMU0,
GR_COMBINE_FUNCTION_LOCAL,
GR_COMBINE_FACTOR_NONE,
GR_COMBINE_FUNCTION_LOCAL,
GR_COMBINE_FACTOR_NONE,
FXFALSE,
FXFALSE);
// grAuxBufferExt( GR_BUFFER_AUXBUFFER );
grTexSource( rdp.texbufs[0].tmu, rdp.texbufs[0].begin, GR_MIPMAPLEVELMASK_BOTH, &(t_info) );
float ul_x = (float)rdp.scissor.ul_x;
float ul_y = (float)rdp.scissor.ul_y;
float lr_x = (float)rdp.scissor.lr_x;
float lr_y = (float)rdp.scissor.lr_y;
float ul_u = (float)rdp.scissor.ul_x * scale;
float ul_v = (float)rdp.scissor.ul_y * scale;
float lr_u = (float)rdp.scissor.lr_x * scale;
float lr_v = (float)rdp.scissor.lr_y * scale;
// Make the vertices
VERTEX v[4] = {
{ ul_x, ul_y, 1, 1, ul_u, ul_v, ul_u, ul_v, {ul_u, ul_v, ul_u, ul_v} },
{ lr_x, ul_y, 1, 1, lr_u, ul_v, lr_u, ul_v, {lr_u, ul_v, lr_u, ul_v} },
{ ul_x, lr_y, 1, 1, ul_u, lr_v, ul_u, lr_v, {ul_u, lr_v, ul_u, lr_v} },
{ lr_x, lr_y, 1, 1, lr_u, lr_v, lr_u, lr_v, {lr_u, lr_v, lr_u, lr_v} }
};
grDrawTriangle (&v[0], &v[2], &v[1]);
grDrawTriangle (&v[2], &v[3], &v[1]);
// grAuxBufferExt( GR_BUFFER_TEXTUREAUXBUFFER_EXT );
rdp.update |= UPDATE_COMBINE | UPDATE_ZBUF_ENABLED | UPDATE_CULL_MODE;
}
void DrawDepthBufferToScreen(FB_TO_SCREEN_INFO & fb_info)
{
uint32_t width = fb_info.lr_x - fb_info.ul_x + 1;
uint32_t height = fb_info.lr_y - fb_info.ul_y + 1;
if (width > (uint32_t)voodoo.max_tex_size || height > (uint32_t)voodoo.max_tex_size || width > 512)
{
DrawDepthBufferToScreen256(fb_info);
return;
}
if (fb_hwfbe_enabled && !evoodoo)
{
DrawHiresDepthBufferToScreen(fb_info);
return;
}
FRDP("DrawDepthBufferToScreen. ul_x=%d, ul_y=%d, lr_x=%d, lr_y=%d, size=%d, addr=%08lx\n", fb_info.ul_x, fb_info.ul_y, fb_info.lr_x, fb_info.lr_y, fb_info.size, fb_info.addr);
GrTexInfo t_info;
uint8_t * image = gfx.RDRAM+fb_info.addr;
uint32_t texwidth;
float scale;
if (width <= 256)
{
texwidth = 256;
scale = 1.0f;
t_info.smallLodLog2 = t_info.largeLodLog2 = GR_LOD_LOG2_256;
}
else
{
texwidth = 512;
scale = 0.5f;
t_info.smallLodLog2 = t_info.largeLodLog2 = GR_LOD_LOG2_512;
}
if (height <= (texwidth>>1))
{
t_info.aspectRatioLog2 = GR_ASPECT_LOG2_2x1;
}
else
{
t_info.aspectRatioLog2 = GR_ASPECT_LOG2_1x1;
}
uint16_t * tex = (uint16_t*)texture_buffer;
uint16_t * dst = tex;
uint16_t * src = (uint16_t*)image;
src += fb_info.ul_x + fb_info.ul_y * fb_info.width;
for (uint32_t y=0; y < height; y++)
{
for (uint32_t x=0; x < width; x++)
{
*(dst++) = rdp.pal_8[src[(x+y*fb_info.width)^1]>>8];
}
dst += texwidth-width;
}
t_info.format = GR_TEXFMT_ALPHA_INTENSITY_88;
t_info.data = tex;
int tmu = SetupFBtoScreenCombiner(grTexTextureMemRequired(GR_MIPMAPLEVELMASK_BOTH, &t_info), fb_info.opaque);
grConstantColorValue (rdp.fog_color);
grColorCombine (GR_COMBINE_FUNCTION_SCALE_OTHER,
GR_COMBINE_FACTOR_ONE,
GR_COMBINE_LOCAL_NONE,
GR_COMBINE_OTHER_CONSTANT,
FXFALSE);
grTexDownloadMipMap (tmu,
voodoo.tex_min_addr[tmu]+voodoo.tmem_ptr[tmu],
GR_MIPMAPLEVELMASK_BOTH,
&t_info);
grTexSource (tmu,
voodoo.tex_min_addr[tmu]+voodoo.tmem_ptr[tmu],
GR_MIPMAPLEVELMASK_BOTH,
&t_info);
float ul_x = fb_info.ul_x * rdp.scale_x + rdp.offset_x;
float ul_y = fb_info.ul_y * rdp.scale_y + rdp.offset_y;
float lr_x = fb_info.lr_x * rdp.scale_x + rdp.offset_x;
float lr_y = fb_info.lr_y * rdp.scale_y + rdp.offset_y;
float lr_u = (width-1)*scale;
float lr_v = (height-1)*scale;
float zero = scale*0.5f;
// Make the vertices
VERTEX v[4] = {
{ ul_x, ul_y, 1, 1, zero, zero, zero, zero, {zero, zero, zero, zero} },
{ lr_x, ul_y, 1, 1, lr_u, zero, lr_u, zero, {lr_u, zero, lr_u, zero} },
{ ul_x, lr_y, 1, 1, zero, lr_v, zero, lr_v, {zero, lr_v, zero, lr_v} },
{ lr_x, lr_y, 1, 1, lr_u, lr_v, lr_u, lr_v, {lr_u, lr_v, lr_u, lr_v} }
};
grDrawTriangle (&v[0], &v[2], &v[1]);
grDrawTriangle (&v[2], &v[3], &v[1]);
}
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