doylet/Dengine
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Improve performance by swapping render groups

Browse Source 
Last used render groups are brought to front of render list when searching for
valid group- as per- recently used items are likely to be used again.
This commit is contained in:
Doyle Thai 2016-09-23 19:36:18 +10:00
parent 72d30b6320
commit 82421ca64c
3 changed files with 20 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/Renderer.c
View File

@ -13,6 +13,11 @@
INTERNAL void addVertexToRenderGroup(Renderer *renderer, Texture *tex, v4 color, INTERNAL void addVertexToRenderGroup(Renderer *renderer, Texture *tex, v4 color,
Vertex *vertexList, i32 numVertexes) Vertex *vertexList, i32 numVertexes)
{ {
#ifdef DENGINE_DEBUG
ASSERT(numVertexes > 0);
#endif
/* Find vacant/matching render group */ /* Find vacant/matching render group */
RenderGroup *targetGroup = NULL; RenderGroup *targetGroup = NULL;
for (i32 i = 0; i < ARRAY_COUNT(renderer->groups); i++) for (i32 i = 0; i < ARRAY_COUNT(renderer->groups); i++)
@ -46,7 +51,13 @@ INTERNAL void addVertexToRenderGroup(Renderer *renderer, Texture *tex, v4 color,
i32 freeVertexSlots = renderer->groupCapacity - group->vertexIndex; i32 freeVertexSlots = renderer->groupCapacity - group->vertexIndex;
if (numVertexes < freeVertexSlots) if (numVertexes < freeVertexSlots)
{ {
targetGroup = &renderer->groups[i]; if (i != 0)
{
RenderGroup tmp = renderer->groups[0];
renderer->groups[0] = renderer->groups[i];
renderer->groups[i] = tmp;
}
targetGroup = &renderer->groups[0];
break; break;
} }
} }
@ -289,6 +300,7 @@ void renderer_string(Renderer *const renderer, MemoryArena *arena, Rect camera,
v2 pivotPoint, f32 rotate, v4 color) v2 pivotPoint, f32 rotate, v4 color)
{ {
i32 strLen = common_strlen(string); i32 strLen = common_strlen(string);
if (strLen <= 0) return;
// TODO(doyle): Slightly incorrect string length in pixels calculation, // TODO(doyle): Slightly incorrect string length in pixels calculation,
// because we use the advance metric of each character for length not // because we use the advance metric of each character for length not

2
src/WorldTraveller.c
View File

@ -101,7 +101,7 @@ INTERNAL void rendererInit(GameState *state, v2 windowSize)
GL_CHECK_ERROR(); GL_CHECK_ERROR();
// TODO(doyle): Lazy allocate render group capacity // TODO(doyle): Lazy allocate render group capacity
renderer->groupCapacity = 1024; renderer->groupCapacity = 4096;
for (i32 i = 0; i < ARRAY_COUNT(renderer->groups); i++) for (i32 i = 0; i < ARRAY_COUNT(renderer->groups); i++)
{ {
renderer->groups[i].vertexList = renderer->groups[i].vertexList =

7
src/dengine.c
View File

@ -224,9 +224,14 @@ i32 main(void)
f32 msPerFrame = secondsElapsed * 1000.0f; f32 msPerFrame = secondsElapsed * 1000.0f;
f32 framesPerSecond = 1.0f / secondsElapsed; f32 framesPerSecond = 1.0f / secondsElapsed;
i32 entityCount =
worldTraveller.world[worldTraveller.currWorldIndex]
.freeEntityIndex;
char textBuffer[256]; char textBuffer[256];
snprintf(textBuffer, ARRAY_COUNT(textBuffer), snprintf(textBuffer, ARRAY_COUNT(textBuffer),
"Dengine | %f ms/f | %f fps", msPerFrame, framesPerSecond); "Dengine | %f ms/f | %f fps | Entity Count: %d",
msPerFrame, framesPerSecond, entityCount);
glfwSetWindowTitle(window, textBuffer); glfwSetWindowTitle(window, textBuffer);
titleUpdateFrequencyInSeconds = 0.5f; titleUpdateFrequencyInSeconds = 0.5f;