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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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29
examples/directx11_example/main.cpp
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@ -286,8 +286,7 @@ HRESULT InitDeviceD3D(HWND hWnd)
\
float4 main(PS_INPUT input) : SV_Target\
{\
float4 out_col = input.col; \
out_col.w *= texture0.Sample(sampler0, input.uv).w; \
float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \
return out_col; \
}";
@ -381,16 +380,18 @@ 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;
font->GetTextureDataRGBA32(&pixels, &width, &height);
// Create texture
D3D11_TEXTURE2D_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.Width = font->TexWidth;
desc.Height = font->TexHeight;
desc.Width = width;
desc.Height = height;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = DXGI_FORMAT_A8_UNORM;
desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
desc.SampleDesc.Count = 1;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
@ -398,15 +399,15 @@ void LoadFontTexture(ImFont* font)
ID3D11Texture2D *pTexture = NULL;
D3D11_SUBRESOURCE_DATA subResource;
subResource.pSysMem = font->TexPixels;
subResource.SysMemPitch = desc.Width * 1;
subResource.pSysMem = pixels;
subResource.SysMemPitch = desc.Width * 4;
subResource.SysMemSlicePitch = 0;
g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
// Create texture view
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
ZeroMemory(&srvDesc, sizeof(srvDesc));
srvDesc.Format = DXGI_FORMAT_A8_UNORM;
srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = desc.MipLevels;
srvDesc.Texture2D.MostDetailedMip = 0;
@ -464,10 +465,9 @@ void InitImGui()
}
}
// 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);
// Create texture sampler
@ -569,11 +569,6 @@ 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;