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ImFont::GetTextureData API allow to retrieve 8/32 bits data + lazily load defaults font

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Examples: OpenGL3 and DirectX11 back to using 32-bits texture solely for
ease of integration.
This commit is contained in:
ocornut
2015-01-11 21:06:57 +00:00
parent 241e8086fa
commit 0f4d74d614
6 changed files with 125 additions and 88 deletions
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21
examples/directx9_example/main.cpp
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@ -176,10 +176,13 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
void LoadFontTexture(ImFont* font)
{
IM_ASSERT(font && font->IsLoaded());
unsigned char* pixels;
int width, height;
int bytes_per_pixel;
font->GetTextureDataAlpha8(&pixels, &width, &height, &bytes_per_pixel);
LPDIRECT3DTEXTURE9 pTexture = NULL;
if (D3DXCreateTexture(g_pd3dDevice, font->TexWidth, font->TexHeight, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8, D3DPOOL_DEFAULT, &pTexture) < 0)
if (D3DXCreateTexture(g_pd3dDevice, width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8, D3DPOOL_DEFAULT, &pTexture) < 0)
{
IM_ASSERT(0);
return;
@ -192,8 +195,8 @@ void LoadFontTexture(ImFont* font)
IM_ASSERT(0);
return;
}
for (int y = 0; y < font->TexHeight; y++)
memcpy((unsigned char *)tex_locked_rect.pBits + tex_locked_rect.Pitch * y, font->TexPixels + font->TexWidth * y, font->TexWidth);
for (int y = 0; y < height; y++)
memcpy((unsigned char *)tex_locked_rect.pBits + tex_locked_rect.Pitch * y, pixels + (width * bytes_per_pixel) * y, (width * bytes_per_pixel));
pTexture->UnlockRect(0);
font->TexID = (void *)pTexture;
@ -237,10 +240,9 @@ void InitImGui()
return;
}
// Load font
io.Font->LoadDefault();
// Load font (optionally load a custom TTF font)
//io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
//io.Font->DisplayOffset.y += 0.0f;
//io.Font->DisplayOffset.y += 1.0f;
LoadFontTexture(io.Font);
}
@ -327,11 +329,6 @@ int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int)
show_test_window ^= ImGui::Button("Test Window");
show_another_window ^= ImGui::Button("Another Window");
static ImFont* font2 = NULL;
if (!font2) { font2 = new ImFont(); font2->LoadFromFileTTF("../../extra_fonts/ArialUni.ttf", 30.0f); LoadFontTexture(font2); }
ImGui::Image(font2->TexID, ImVec2((float)font2->TexWidth, (FLOAT)font2->TexHeight));
//ImGui::GetWindowDrawList()->AddText(font2, 30.0f, ImGui::GetCursorScreenPos(), 0xFFFFFFFF, "Another font");
// Calculate and show frame rate
static float ms_per_frame[120] = { 0 };
static int ms_per_frame_idx = 0;