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Revert "imgui_sw: possible optimization?"

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This reverts commit 80e9a1d7e6.
This commit is contained in:
tildearrow 2024-05-17 11:49:24 -05:00
parent 533352939b
commit eed1688fe7
1 changed files with 7 additions and 15 deletions
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22
extern/imgui_software_renderer/imgui_sw.cpp vendored
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@ -230,14 +230,10 @@ static void paint_uniform_rectangle(const PaintTarget &target,
max_x_i = std::min(max_x_i, target.width); max_x_i = std::min(max_x_i, target.width);
max_y_i = std::min(max_y_i, target.height); max_y_i = std::min(max_y_i, target.height);
// multiply Y for speed
min_y_i *= target.width;
max_y_i *= target.width;
if (color.a==255) { if (color.a==255) {
// fast path if alpha blending is not necessary // fast path if alpha blending is not necessary
for (int y = min_y_i; y < max_y_i; y+=target.width) { for (int y = min_y_i; y < max_y_i; ++y) {
uint32_t* target_pixel = &target.pixels[y + min_x_i - 1]; uint32_t* target_pixel = &target.pixels[y * target.width + min_x_i - 1];
for (int x = min_x_i; x < max_x_i; ++x) { for (int x = min_x_i; x < max_x_i; ++x) {
++target_pixel; ++target_pixel;
*target_pixel = color.u32; *target_pixel = color.u32;
@ -245,12 +241,12 @@ static void paint_uniform_rectangle(const PaintTarget &target,
} }
} else { } else {
// We often blend the same colors over and over again, so optimize for this (saves 25% total cpu): // We often blend the same colors over and over again, so optimize for this (saves 25% total cpu):
uint32_t last_target_pixel = target.pixels[min_y_i + min_x_i]; uint32_t last_target_pixel = target.pixels[min_y_i * target.width + min_x_i];
const ColorInt* lastColorRef = (const ColorInt*)(&last_target_pixel); const ColorInt* lastColorRef = (const ColorInt*)(&last_target_pixel);
uint32_t last_output = blend(*lastColorRef, color); uint32_t last_output = blend(*lastColorRef, color);
for (int y = min_y_i; y < max_y_i; y+=target.width) { for (int y = min_y_i; y < max_y_i; ++y) {
uint32_t* target_pixel = &target.pixels[y + min_x_i - 1]; uint32_t* target_pixel = &target.pixels[y * target.width + min_x_i - 1];
for (int x = min_x_i; x < max_x_i; ++x) { for (int x = min_x_i; x < max_x_i; ++x) {
++target_pixel; ++target_pixel;
if (*target_pixel == last_target_pixel) { if (*target_pixel == last_target_pixel) {
@ -329,13 +325,9 @@ static void paint_uniform_textured_rectangle(const PaintTarget &target,
const ColorInt colorRef = ColorInt::bgra(min_v.col); const ColorInt colorRef = ColorInt::bgra(min_v.col);
// multiply Y for speed for (int y = min_y_i; y < max_y_i; ++y) {
min_y_i *= target.width;
max_y_i *= target.width;
for (int y = min_y_i; y < max_y_i; y+=target.width) {
currentX = startX; currentX = startX;
uint32_t* target_pixel = &target.pixels[y - 1 + min_x_i]; uint32_t* target_pixel = &target.pixels[y * target.width - 1 + min_x_i];
for (int x = min_x_i; x < max_x_i; ++x) { for (int x = min_x_i; x < max_x_i; ++x) {
++target_pixel; ++target_pixel;
const ColorInt* targetColorRef = (const ColorInt*)(target_pixel); const ColorInt* targetColorRef = (const ColorInt*)(target_pixel);