mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-11-14 16:41:07 +00:00
234 lines
8.1 KiB
C++
234 lines
8.1 KiB
C++
/*
|
|
** DrawWall code generation
|
|
** Copyright (c) 2016 Magnus Norddahl
|
|
**
|
|
** This software is provided 'as-is', without any express or implied
|
|
** warranty. In no event will the authors be held liable for any damages
|
|
** arising from the use of this software.
|
|
**
|
|
** Permission is granted to anyone to use this software for any purpose,
|
|
** including commercial applications, and to alter it and redistribute it
|
|
** freely, subject to the following restrictions:
|
|
**
|
|
** 1. The origin of this software must not be misrepresented; you must not
|
|
** claim that you wrote the original software. If you use this software
|
|
** in a product, an acknowledgment in the product documentation would be
|
|
** appreciated but is not required.
|
|
** 2. Altered source versions must be plainly marked as such, and must not be
|
|
** misrepresented as being the original software.
|
|
** 3. This notice may not be removed or altered from any source distribution.
|
|
**
|
|
*/
|
|
|
|
#include "precomp.h"
|
|
#include "fixedfunction/drawwallcodegen.h"
|
|
#include "ssa/ssa_function.h"
|
|
#include "ssa/ssa_scope.h"
|
|
#include "ssa/ssa_for_block.h"
|
|
#include "ssa/ssa_if_block.h"
|
|
#include "ssa/ssa_stack.h"
|
|
#include "ssa/ssa_function.h"
|
|
#include "ssa/ssa_struct_type.h"
|
|
#include "ssa/ssa_value.h"
|
|
|
|
void DrawWallCodegen::Generate(DrawWallVariant variant, bool fourColumns, SSAValue args, SSAValue thread_data)
|
|
{
|
|
dest = args[0][0].load(true);
|
|
source[0] = args[0][1].load(true);
|
|
source[1] = args[0][2].load(true);
|
|
source[2] = args[0][3].load(true);
|
|
source[3] = args[0][4].load(true);
|
|
source2[0] = args[0][5].load(true);
|
|
source2[1] = args[0][6].load(true);
|
|
source2[2] = args[0][7].load(true);
|
|
source2[3] = args[0][8].load(true);
|
|
pitch = args[0][9].load(true);
|
|
count = args[0][10].load(true);
|
|
dest_y = args[0][11].load(true);
|
|
texturefrac[0] = args[0][12].load(true);
|
|
texturefrac[1] = args[0][13].load(true);
|
|
texturefrac[2] = args[0][14].load(true);
|
|
texturefrac[3] = args[0][15].load(true);
|
|
texturefracx[0] = args[0][16].load(true);
|
|
texturefracx[1] = args[0][17].load(true);
|
|
texturefracx[2] = args[0][18].load(true);
|
|
texturefracx[3] = args[0][19].load(true);
|
|
iscale[0] = args[0][20].load(true);
|
|
iscale[1] = args[0][21].load(true);
|
|
iscale[2] = args[0][22].load(true);
|
|
iscale[3] = args[0][23].load(true);
|
|
textureheight[0] = args[0][24].load(true);
|
|
textureheight[1] = args[0][25].load(true);
|
|
textureheight[2] = args[0][26].load(true);
|
|
textureheight[3] = args[0][27].load(true);
|
|
light[0] = args[0][28].load(true);
|
|
light[1] = args[0][29].load(true);
|
|
light[2] = args[0][30].load(true);
|
|
light[3] = args[0][31].load(true);
|
|
srcalpha = args[0][32].load(true);
|
|
destalpha = args[0][33].load(true);
|
|
SSAShort light_alpha = args[0][34].load(true);
|
|
SSAShort light_red = args[0][35].load(true);
|
|
SSAShort light_green = args[0][36].load(true);
|
|
SSAShort light_blue = args[0][37].load(true);
|
|
SSAShort fade_alpha = args[0][38].load(true);
|
|
SSAShort fade_red = args[0][39].load(true);
|
|
SSAShort fade_green = args[0][40].load(true);
|
|
SSAShort fade_blue = args[0][41].load(true);
|
|
SSAShort desaturate = args[0][42].load(true);
|
|
SSAInt flags = args[0][43].load(true);
|
|
shade_constants.light = SSAVec4i(light_blue.zext_int(), light_green.zext_int(), light_red.zext_int(), light_alpha.zext_int());
|
|
shade_constants.fade = SSAVec4i(fade_blue.zext_int(), fade_green.zext_int(), fade_red.zext_int(), fade_alpha.zext_int());
|
|
shade_constants.desaturate = desaturate.zext_int();
|
|
|
|
thread.core = thread_data[0][0].load(true);
|
|
thread.num_cores = thread_data[0][1].load(true);
|
|
thread.pass_start_y = thread_data[0][2].load(true);
|
|
thread.pass_end_y = thread_data[0][3].load(true);
|
|
|
|
is_simple_shade = (flags & DrawWallArgs::simple_shade) == SSAInt(DrawWallArgs::simple_shade);
|
|
is_nearest_filter = (flags & DrawWallArgs::nearest_filter) == SSAInt(DrawWallArgs::nearest_filter);
|
|
|
|
count = count_for_thread(dest_y, count, thread);
|
|
dest = dest_for_thread(dest_y, pitch, dest, thread);
|
|
|
|
pitch = pitch * thread.num_cores;
|
|
|
|
int numColumns = fourColumns ? 4 : 1;
|
|
for (int i = 0; i < numColumns; i++)
|
|
{
|
|
stack_frac[i].store(texturefrac[i] + iscale[i] * skipped_by_thread(dest_y, thread));
|
|
fracstep[i] = iscale[i] * thread.num_cores;
|
|
one[i] = ((0x80000000 + textureheight[i] - 1) / textureheight[i]) * 2 + 1;
|
|
}
|
|
|
|
SSAIfBlock branch;
|
|
branch.if_block(is_simple_shade);
|
|
LoopShade(variant, fourColumns, true);
|
|
branch.else_block();
|
|
LoopShade(variant, fourColumns, false);
|
|
branch.end_block();
|
|
}
|
|
|
|
void DrawWallCodegen::LoopShade(DrawWallVariant variant, bool fourColumns, bool isSimpleShade)
|
|
{
|
|
SSAIfBlock branch;
|
|
branch.if_block(is_nearest_filter);
|
|
Loop(variant, fourColumns, isSimpleShade, true);
|
|
branch.else_block();
|
|
int numColumns = fourColumns ? 4 : 1;
|
|
for (int i = 0; i < numColumns; i++)
|
|
stack_frac[i].store(stack_frac[i].load() - (one[i] / 2));
|
|
Loop(variant, fourColumns, isSimpleShade, false);
|
|
branch.end_block();
|
|
}
|
|
|
|
void DrawWallCodegen::Loop(DrawWallVariant variant, bool fourColumns, bool isSimpleShade, bool isNearestFilter)
|
|
{
|
|
int numColumns = fourColumns ? 4 : 1;
|
|
|
|
stack_index.store(SSAInt(0));
|
|
{
|
|
SSAForBlock loop;
|
|
SSAInt index = stack_index.load();
|
|
loop.loop_block(index < count);
|
|
|
|
SSAInt frac[4];
|
|
for (int i = 0; i < numColumns; i++)
|
|
frac[i] = stack_frac[i].load();
|
|
|
|
SSAInt offset = index * pitch * 4;
|
|
|
|
if (fourColumns)
|
|
{
|
|
SSAVec16ub bg = dest[offset].load_unaligned_vec16ub(false);
|
|
SSAVec8s bg0 = SSAVec8s::extendlo(bg);
|
|
SSAVec8s bg1 = SSAVec8s::extendhi(bg);
|
|
SSAVec4i bgcolors[4] =
|
|
{
|
|
SSAVec4i::extendlo(bg0),
|
|
SSAVec4i::extendhi(bg0),
|
|
SSAVec4i::extendlo(bg1),
|
|
SSAVec4i::extendhi(bg1)
|
|
};
|
|
|
|
SSAVec4i colors[4];
|
|
for (int i = 0; i < 4; i++)
|
|
colors[i] = Blend(Shade(Sample(frac[i], i, isNearestFilter), i, isSimpleShade), bgcolors[i], variant);
|
|
|
|
SSAVec16ub color(SSAVec8s(colors[0], colors[1]), SSAVec8s(colors[2], colors[3]));
|
|
dest[offset].store_unaligned_vec16ub(color);
|
|
}
|
|
else
|
|
{
|
|
SSAVec4i bgcolor = dest[offset].load_vec4ub(false);
|
|
SSAVec4i color = Blend(Shade(Sample(frac[0], 0, isNearestFilter), 0, isSimpleShade), bgcolor, variant);
|
|
dest[offset].store_vec4ub(color);
|
|
}
|
|
|
|
stack_index.store(index.add(SSAInt(1), true, true));
|
|
for (int i = 0; i < numColumns; i++)
|
|
stack_frac[i].store(frac[i] + fracstep[i]);
|
|
loop.end_block();
|
|
}
|
|
}
|
|
|
|
SSAVec4i DrawWallCodegen::Sample(SSAInt frac, int index, bool isNearestFilter)
|
|
{
|
|
if (isNearestFilter)
|
|
{
|
|
SSAInt sample_index = ((frac >> FRACBITS) * textureheight[index]) >> FRACBITS;
|
|
return source[index][sample_index * 4].load_vec4ub(false);
|
|
}
|
|
else
|
|
{
|
|
return SampleLinear(source[index], source2[index], texturefracx[index], frac, one[index], textureheight[index]);
|
|
}
|
|
}
|
|
|
|
SSAVec4i DrawWallCodegen::SampleLinear(SSAUBytePtr col0, SSAUBytePtr col1, SSAInt texturefracx, SSAInt texturefracy, SSAInt one, SSAInt height)
|
|
{
|
|
SSAInt frac_y0 = (texturefracy >> FRACBITS) * height;
|
|
SSAInt frac_y1 = ((texturefracy + one) >> FRACBITS) * height;
|
|
SSAInt y0 = frac_y0 >> FRACBITS;
|
|
SSAInt y1 = frac_y1 >> FRACBITS;
|
|
|
|
SSAVec4i p00 = col0[y0 * 4].load_vec4ub(true);
|
|
SSAVec4i p01 = col0[y1 * 4].load_vec4ub(true);
|
|
SSAVec4i p10 = col1[y0 * 4].load_vec4ub(true);
|
|
SSAVec4i p11 = col1[y1 * 4].load_vec4ub(true);
|
|
|
|
SSAInt inv_b = texturefracx;
|
|
SSAInt a = (frac_y1 >> (FRACBITS - 4)) & 15;
|
|
SSAInt inv_a = 16 - a;
|
|
SSAInt b = 16 - inv_b;
|
|
|
|
return (p00 * (a * b) + p01 * (inv_a * b) + p10 * (a * inv_b) + p11 * (inv_a * inv_b) + 127) >> 8;
|
|
}
|
|
|
|
SSAVec4i DrawWallCodegen::Shade(SSAVec4i fg, int index, bool isSimpleShade)
|
|
{
|
|
if (isSimpleShade)
|
|
return shade_bgra_simple(fg, light[index]);
|
|
else
|
|
return shade_bgra_advanced(fg, light[index], shade_constants);
|
|
}
|
|
|
|
SSAVec4i DrawWallCodegen::Blend(SSAVec4i fg, SSAVec4i bg, DrawWallVariant variant)
|
|
{
|
|
switch (variant)
|
|
{
|
|
default:
|
|
case DrawWallVariant::Opaque:
|
|
return blend_copy(fg);
|
|
case DrawWallVariant::Masked:
|
|
return blend_alpha_blend(fg, bg);
|
|
case DrawWallVariant::Add:
|
|
case DrawWallVariant::AddClamp:
|
|
return blend_add(fg, bg, srcalpha, calc_blend_bgalpha(fg, destalpha));
|
|
case DrawWallVariant::SubClamp:
|
|
return blend_sub(fg, bg, srcalpha, calc_blend_bgalpha(fg, destalpha));
|
|
case DrawWallVariant::RevSubClamp:
|
|
return blend_revsub(fg, bg, srcalpha, calc_blend_bgalpha(fg, destalpha));
|
|
}
|
|
}
|