mirror
/
devilutionX
mirror of https://github.com/diasurgical/devilutionX.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

dun_render: Optimize triangle rendering 

A small performance improvement at the cost of ~1 KiB binary size.
1143 -> 1147 FPS on the timedemo
pull/7347/head
Gleb Mazovetskiy 2 years ago
parent
81452d870d
commit
d41c7e4221
1 changed files with 38 additions and 12 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 50
      Source/engine/render/dun_render.cpp

50
Source/engine/render/dun_render.cpp
Unescape View File

@ -476,10 +476,16 @@ template <LightType Light, bool Transparent>
DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void RenderLeftTriangleLower(uint8_t *DVL_RESTRICT &dst, uint16_t dstPitch, const uint8_t *DVL_RESTRICT &src, const uint8_t *DVL_RESTRICT tbl)
{
dst += XStep * (LowerHeight - 1);
for (auto i = 1; i <= LowerHeight; ++i, dst -= dstPitch + XStep) {
src += 2 * (i % 2);
const auto width = XStep * i;
unsigned width = 0;
for (unsigned i = 0; i < LowerHeight; i += 2) {
src += 2;
width += XStep;
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
dst -= dstPitch + XStep;
src += width;
width += XStep;
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
dst -= dstPitch + XStep;
src += width;
}
}
@ -535,12 +541,19 @@ DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void RenderLeftTriangleFull(uint8_t *DVL_RES
{
RenderLeftTriangleLower<Light, Transparent>(dst, dstPitch, src, tbl);
dst += 2 * XStep;
for (auto i = 1; i <= TriangleUpperHeight; ++i, dst -= dstPitch - XStep) {
src += 2 * (i % 2);
const auto width = Width - XStep * i;
unsigned width = Width;
for (unsigned i = 0; i < TriangleUpperHeight - 1; i += 2) {
src += 2;
width -= XStep;
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
src += width;
dst -= dstPitch - XStep;
width -= XStep;
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
src += width;
dst -= dstPitch - XStep;
}
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
}
template <LightType Light, bool Transparent>
@ -616,10 +629,16 @@ DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void RenderLeftTriangle(uint8_t *DVL_RESTRIC
template <LightType Light, bool Transparent>
DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void RenderRightTriangleLower(uint8_t *DVL_RESTRICT &dst, uint16_t dstPitch, const uint8_t *DVL_RESTRICT &src, const uint8_t *DVL_RESTRICT tbl)
{
for (auto i = 1; i <= LowerHeight; ++i, dst -= dstPitch) {
const auto width = XStep * i;
unsigned width = 0;
for (unsigned i = 0; i < LowerHeight; i += 2) {
width += XStep;
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
src += width + 2 * (i % 2);
src += width + 2;
width += XStep;
dst -= dstPitch;
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
src += width;
dst -= dstPitch;
}
}
@ -666,11 +685,18 @@ template <LightType Light, bool Transparent>
DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void RenderRightTriangleFull(uint8_t *DVL_RESTRICT dst, uint16_t dstPitch, const uint8_t *DVL_RESTRICT src, const uint8_t *DVL_RESTRICT tbl)
{
RenderRightTriangleLower<Light, Transparent>(dst, dstPitch, src, tbl);
for (auto i = 1; i <= TriangleUpperHeight; ++i, dst -= dstPitch) {
const auto width = Width - XStep * i;
unsigned width = Width;
for (unsigned i = 0; i < TriangleUpperHeight - 1; i += 2) {
width -= XStep;
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
src += width + 2 * (i % 2);
src += width + 2;
dst -= dstPitch;
width -= XStep;
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
src += width;
dst -= dstPitch;
}
RenderLineTransparentOrOpaque<Light, Transparent>(dst, src, width, tbl);
}
template <LightType Light, bool Transparent>

Write Preview
Loading…
Cancel
Save