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AA branch: minor optimisations, merging loops

This commit is contained in:
ocornut 2015-06-30 13:09:07 -06:00
parent c3040dee35
commit bbdf36cd3a
1 changed files with 34 additions and 45 deletions
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79
imgui.cpp
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@ -9018,6 +9018,13 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
temp_inner[points_count-1] = points[points_count-1] - temp_normals[points_count-1]*aa_size;
}
const ImU32 col_trans = col & 0x00ffffff;
const int idx_count = count*12;
const int vtx_count = points_count*3;
PrimReserve(idx_count, vtx_count);
ImDrawIdx vtx_inner_idx = vtx_current_idx+1;
ImDrawIdx vtx_outer_idx = vtx_current_idx+2;
for (int i = 0; i < count; i++)
{
const int ni = (i+1) < points_count ? i+1 : 0;
@ -9034,16 +9041,19 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
dm *= aa_size;
temp_outer[ni] = points[ni] + dm;
temp_inner[ni] = points[ni] - dm;
// Add indexes
int i3 = i * 3;
int ni3 = ni * 3;
idx_write[0] = (ImDrawIdx)(vtx_current_idx + ni3); idx_write[1] = (ImDrawIdx)(vtx_current_idx + i3); idx_write[2] = (ImDrawIdx)(vtx_outer_idx + i3);
idx_write[3] = (ImDrawIdx)(vtx_outer_idx + i3); idx_write[4] = (ImDrawIdx)(vtx_outer_idx + ni3); idx_write[5] = (ImDrawIdx)(vtx_current_idx + ni3);
idx_write[6] = (ImDrawIdx)(vtx_inner_idx + ni3); idx_write[7] = (ImDrawIdx)(vtx_inner_idx + i3); idx_write[8] = (ImDrawIdx)(vtx_current_idx + i3);
idx_write[9] = (ImDrawIdx)(vtx_current_idx + i3); idx_write[10]= (ImDrawIdx)(vtx_current_idx + ni3); idx_write[11]= (ImDrawIdx)(vtx_inner_idx + ni3);
idx_write += 12;
}
const ImU32 col_trans = col & 0x00ffffff;
// Indexed
// FIXME-OPT: merge with loops above
const int idx_count = count*12;
const int vtx_count = points_count*3;
PrimReserve(idx_count, vtx_count);
// Add vertexes
// FIXME-OPT: merge into loops above
for (int i = 0; i < points_count; i++)
{
vtx_write[0].pos = points[i]; vtx_write[0].uv = uv; vtx_write[0].col = col;
@ -9051,21 +9061,6 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
vtx_write[2].pos = temp_outer[i]; vtx_write[2].uv = uv; vtx_write[2].col = col_trans;
vtx_write += 3;
}
ImDrawIdx vtx_inner_idx = vtx_current_idx+1;
ImDrawIdx vtx_outer_idx = vtx_current_idx+2;
for (int i = 0; i < count; i++)
{
const int ni = (i+1) < points_count ? i+1 : 0;
int i3 = i * 3;
int ni3 = ni * 3;
idx_write[0] = (ImDrawIdx)(vtx_current_idx + ni3); idx_write[1] = (ImDrawIdx)(vtx_current_idx + i3); idx_write[2] = (ImDrawIdx)(vtx_outer_idx + i3);
idx_write[3] = (ImDrawIdx)(vtx_outer_idx + i3); idx_write[4] = (ImDrawIdx)(vtx_outer_idx + ni3); idx_write[5] = (ImDrawIdx)(vtx_current_idx + ni3);
idx_write[6] = (ImDrawIdx)(vtx_inner_idx + ni3); idx_write[7] = (ImDrawIdx)(vtx_inner_idx + i3); idx_write[8] = (ImDrawIdx)(vtx_current_idx + i3);
idx_write[9] = (ImDrawIdx)(vtx_current_idx + i3); idx_write[10]= (ImDrawIdx)(vtx_current_idx + ni3); idx_write[11]= (ImDrawIdx)(vtx_inner_idx + ni3);
idx_write += 12;
}
vtx_current_idx += (ImDrawIdx)vtx_count;
}
else
@ -9134,6 +9129,20 @@ void ImDrawList::AddConvexPolyFilled(const ImVec2* points, const int points_coun
temp_normals[j].y = -diff.x;
}
const ImU32 col_trans = col & 0x00ffffff;
const int idx_count = (points_count-2)*3 + points_count*6;
const int vtx_count = (points_count*2);
PrimReserve(idx_count, vtx_count);
// Add indexes for fill
ImDrawIdx vtx_inner_idx = vtx_current_idx;
ImDrawIdx vtx_outer_idx = vtx_current_idx+1;
for (int i = 2; i < points_count; i++)
{
idx_write[0] = (ImDrawIdx)(vtx_inner_idx); idx_write[1] = (ImDrawIdx)(vtx_inner_idx+((i-1)<<1)); idx_write[2] = (ImDrawIdx)(vtx_inner_idx+(i<<1));
idx_write += 3;
}
for (int i = 0, j = points_count-1; i < points_count; j=i++)
{
const ImVec2& dl0 = temp_normals[j];
@ -9149,33 +9158,13 @@ void ImDrawList::AddConvexPolyFilled(const ImVec2* points, const int points_coun
dm *= aa_size*0.5f;
temp_outer[i] = points[i] + dm;
temp_inner[i] = points[i] - dm;
}
const ImU32 col_trans = col & 0x00ffffff;
const int idx_count = (points_count-2)*3 + points_count*6;
const int vtx_count = (points_count*2);
PrimReserve(idx_count, vtx_count);
// FIXME-OPT: merge with loops above
for (int i = 0; i < points_count; i++)
{
// Add vertices
vtx_write[0].pos = temp_inner[i]; vtx_write[0].uv = uv; vtx_write[0].col = col;
vtx_write[1].pos = temp_outer[i]; vtx_write[1].uv = uv; vtx_write[1].col = col_trans;
vtx_write += 2;
}
// Fill
ImDrawIdx vtx_inner_idx = vtx_current_idx;
ImDrawIdx vtx_outer_idx = vtx_current_idx+1;
for (int i = 2; i < points_count; i++)
{
idx_write[0] = (ImDrawIdx)(vtx_inner_idx); idx_write[1] = (ImDrawIdx)(vtx_inner_idx+((i-1)<<1)); idx_write[2] = (ImDrawIdx)(vtx_inner_idx+(i<<1));
idx_write += 3;
}
// AA fringe
for (int i = 0, j = points_count-1; i < points_count; j=i++)
{
// Add indexes for fringes
idx_write[0] = (ImDrawIdx)(vtx_inner_idx+(i<<1)); idx_write[1] = (ImDrawIdx)(vtx_inner_idx+(j<<1)); idx_write[2] = (ImDrawIdx)(vtx_outer_idx+(j<<1));
idx_write[3] = (ImDrawIdx)(vtx_outer_idx+(j<<1)); idx_write[4] = (ImDrawIdx)(vtx_outer_idx+(i<<1)); idx_write[5] = (ImDrawIdx)(vtx_inner_idx+(i<<1));
idx_write += 6;