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use openmp to parallelize AdvMAME scalers

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This commit is contained in:
Tim Felgentreff 2020-04-20 16:24:53 +02:00
parent 908670c2e1
commit a671773dd2
2 changed files with 15 additions and 4 deletions

6
CMakeLists.txt
View file

@ -633,6 +633,7 @@ find_package(SDL2_mixer REQUIRED)
find_package(SDL2_image REQUIRED)
find_package(Tolua++ REQUIRED)
find_package(ZLIB REQUIRED)
find_package(OpenMP)
if(WIN32)
find_package(MakeNSIS)
@ -1029,6 +1030,11 @@ else ()
endif ()
target_link_libraries(stratagus ${stratagus_LIBS})
if(OpenMP_CXX_FOUND)
target_compile_options(stratagus PRIVATE ${OpenMP_CXX_FLAGS})
target_link_libraries(stratagus OpenMP::OpenMP_CXX)
endif()
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
set_target_properties(stratagus PROPERTIES OUTPUT_NAME stratagus-dbg)
endif()

13
src/video/video.cpp
View file

@ -511,8 +511,10 @@ void* Epx_Scale2x_AdvMame2x_Scaler(SDL_Surface *s) {
// +-----+-----+
// | o3 | o4 |
// +-----+-----+
Uint32 a, b, c, d, p, o1, o2, o3, o4;
for (int y = 1, y2 = 1; y < Video.Height - 1; y++, y2 += 2) {
#pragma omp parallel for
for (int y = 1; y < Video.Height - 1; y++) {
int y2 = y * 2;
Uint32 a, b, c, d, p, o1, o2, o3, o4;
for (int x = 1, x2 = 1; x < Video.Width - 1; x++, x2 += 2) {
o1 = o2 = o3 = o4 = p = in[x + y * inputW];
a = in[x + (y - 1) * inputW];
@ -567,8 +569,11 @@ void* Scale3x_AdvMame3x_Scaler(SDL_Surface *s) {
// +-----+-----+-----+
// | 7 | 8 | 9 |
// +-----+-----+-----+
Uint32 a, b, c, d, e, f, g, h, i, o1, o2, o3, o4, o5, o6, o7, o8, o9;
for (int y = 1, y2 = 1; y < Video.Height - 1; y++, y2 += 3) {
#pragma omp parallel for num_threads(4)
for (int y = 1; y < Video.Height - 1; y++) {
int y2 = y * 3;
Uint32 a, b, c, d, e, f, g, h, i, o1, o2, o3, o4, o5, o6, o7, o8, o9;
for (int x = 1, x2 = 1; x < Video.Width - 1; x++, x2 += 3) {
o1 = o2 = o3 = o4 = o5 = o6 = o7 = o8 = o9 = e = in[x + y * inputW];
a = in[x - 1 + (y - 1) * inputW];