Mirrors/SpaceCadetPinball
1
0
Fork 0
mirror of https://github.com/k4zmu2a/SpaceCadetPinball.git synced 2024-11-25 12:12:32 +01:00
Code Issues Releases Activity

Optimized final blit to the screen render target. (#65)

Browse Source 
When bumping the table, instead of offseting the table pixels by CPU, just memcpy all the pixels to vScreenTex once, and then render two separate quads from that texture: one for the board and the other for the sidebar. Then change the coordinates of the board quad when bumping.
This commit is contained in:
MaikelChan 2021-10-24 06:13:51 +02:00 committed by GitHub
parent 5cd01807b2
commit 38cf08e298
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 40 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
SpaceCadetPinball/render.cpp
View File

@ -1,6 +1,7 @@
#include "pch.h"
#include "render.h"
#include "fullscrn.h"
#include "GroupData.h"
#include "options.h"
#include "pb.h"
@ -538,61 +539,7 @@ void render::BlitVScreen()
);
assertm(static_cast<unsigned>(pitch) == vscreen->Width * sizeof(ColorRgba), "Padding on vScreen texture");
if (offset_x == 0 && offset_y == 0)
{
// No offset - direct copy
std::memcpy(lockedPixels, vscreen->BmpBufPtr1, vscreen->Width * vscreen->Height * sizeof(ColorRgba));
}
else
{
// Copy offset table and fixed side bar
auto tableWidth = pb::MainTable->Width;
auto scoreWidth = vscreen->Width - pb::MainTable->Width;
auto tableStride = tableWidth * sizeof(ColorRgba);
auto scoreStride = scoreWidth * sizeof(ColorRgba);
auto srcScorePtr = &vscreen->BmpBufPtr1[tableWidth];
auto xSrc = 0, ySrc = 0, xDst = offset_x, yDst = offset_y, height = vscreen->Height;
// Negative dst == positive src offset
if (xDst < 0)
{
xSrc -= xDst;
xDst = 0;
}
if (yDst < 0)
{
ySrc -= yDst;
yDst = 0;
}
if (xSrc)
{
tableStride -= xSrc * sizeof(ColorRgba);
}
if (xDst)
{
tableStride -= xDst * sizeof(ColorRgba);
tableWidth -= xDst;
scoreWidth += xDst;
}
if (ySrc)
height -= ySrc;
auto srcBmpPtr = &vscreen->BmpBufPtr1[vscreen->Width * ySrc + xSrc];
auto dstPtr = &lockedPixels[vscreen->Width * yDst + xDst];
for (int y = height; y > 0; --y)
{
std::memcpy(dstPtr, srcBmpPtr, tableStride);
dstPtr += tableWidth;
std::memcpy(dstPtr, srcScorePtr, scoreStride);
dstPtr += scoreWidth;
srcBmpPtr += vscreen->Stride;
srcScorePtr += vscreen->Stride;
}
}
std::memcpy(lockedPixels, vscreen->BmpBufPtr1, vscreen->Width * vscreen->Height * sizeof(ColorRgba));
SDL_UnlockTexture(vScreenTex);
}
@ -600,5 +547,42 @@ void render::BlitVScreen()
void render::PresentVScreen()
{
BlitVScreen();
SDL_RenderCopy(winmain::Renderer, vScreenTex, nullptr, &DestinationRect);
if (offset_x == 0 && offset_y == 0)
{
SDL_RenderCopy(winmain::Renderer, vScreenTex, nullptr, &DestinationRect);
}
else
{
int32_t srcSeparationX = static_cast<int32_t>(vscreen->Width * 0.625f);
SDL_Rect srcBoardRect = SDL_Rect
{
0, 0,
srcSeparationX, vscreen->Height
};
SDL_Rect srcSidebarRect = SDL_Rect
{
srcSeparationX, 0,
vscreen->Width - srcSeparationX, vscreen->Height
};
int32_t dstSeparationX = static_cast<int32_t>(DestinationRect.w * 0.625f);
SDL_Rect dstBoardRect = SDL_Rect
{
DestinationRect.x + static_cast<int32_t>(offset_x * fullscrn::ScaleX), DestinationRect.y + static_cast<int32_t>(offset_y * fullscrn::ScaleY),
dstSeparationX, DestinationRect.h
};
SDL_Rect dstSidebarRect = SDL_Rect
{
DestinationRect.x + dstSeparationX, DestinationRect.y,
DestinationRect.w - dstSeparationX, DestinationRect.h
};
SDL_RenderCopy(winmain::Renderer, vScreenTex, &srcBoardRect, &dstBoardRect);
SDL_RenderCopy(winmain::Renderer, vScreenTex, &srcSidebarRect, &dstSidebarRect);
}
}