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Examples: all supports TextureID in renderer, added LoadFontTexture() function.

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This commit is contained in:
ocornut
2015-01-11 17:17:43 +00:00
parent 40f7b67ef1
commit 20bb6270bc
4 changed files with 129 additions and 83 deletions
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84
examples/directx11_example/main.cpp
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@ -26,7 +26,6 @@ static ID3D11Buffer* g_pVertexConstantBuffer = NULL;
static ID3D10Blob * g_pPixelShaderBlob = NULL;
static ID3D11PixelShader* g_pPixelShader = NULL;
static ID3D11ShaderResourceView*g_pFontTextureView = NULL;
static ID3D11SamplerState* g_pFontSampler = NULL;
static ID3D11BlendState* g_blendState = NULL;
@ -122,7 +121,6 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
g_pd3dDeviceImmediateContext->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
g_pd3dDeviceImmediateContext->PSSetShader(g_pPixelShader, NULL, 0);
g_pd3dDeviceImmediateContext->PSSetShaderResources(0, 1, &g_pFontTextureView);
g_pd3dDeviceImmediateContext->PSSetSamplers(0, 1, &g_pFontSampler);
// Setup render state
@ -139,6 +137,7 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
{
const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
const D3D11_RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
g_pd3dDeviceImmediateContext->PSSetShaderResources(0, 1, (ID3D11ShaderResourceView**)&pcmd->texture_id);
g_pd3dDeviceImmediateContext->RSSetScissorRects(1, &r);
g_pd3dDeviceImmediateContext->Draw(pcmd->vtx_count, vtx_offset);
vtx_offset += pcmd->vtx_count;
@ -324,7 +323,8 @@ void CleanupDevice()
// InitImGui
if (g_pFontSampler) g_pFontSampler->Release();
if (g_pFontTextureView) g_pFontTextureView->Release();
if (ID3D11ShaderResourceView* font_texture_view = (ID3D11ShaderResourceView*)ImGui::GetIO().Font->TexID)
font_texture_view->Release();
if (g_pVB) g_pVB->Release();
// InitDeviceD3D
@ -379,6 +379,45 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
return DefWindowProc(hWnd, msg, wParam, lParam);
}
void LoadFontTexture(ImFont* font)
{
IM_ASSERT(font && font->IsLoaded());
// Create texture
D3D11_TEXTURE2D_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.Width = font->TexWidth;
desc.Height = font->TexHeight;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = DXGI_FORMAT_A8_UNORM;
desc.SampleDesc.Count = 1;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
desc.CPUAccessFlags = 0;
ID3D11Texture2D *pTexture = NULL;
D3D11_SUBRESOURCE_DATA subResource;
subResource.pSysMem = font->TexPixels;
subResource.SysMemPitch = desc.Width * 1;
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.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = desc.MipLevels;
srvDesc.Texture2D.MostDetailedMip = 0;
ID3D11ShaderResourceView* font_texture_view = NULL;
g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &font_texture_view);
pTexture->Release();
// Store ID
font->TexID = (void *)font_texture_view;
}
void InitImGui()
{
RECT rect;
@ -430,39 +469,7 @@ void InitImGui()
io.Font->LoadDefault();
//io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
//io.Font->DisplayOffset.y += 0.0f;
IM_ASSERT(io.Font->IsLoaded());
// Copy font texture
{
D3D11_TEXTURE2D_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.Width = io.Font->TexWidth;
desc.Height = io.Font->TexHeight;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = DXGI_FORMAT_A8_UNORM;
desc.SampleDesc.Count = 1;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
desc.CPUAccessFlags = 0;
ID3D11Texture2D *pTexture = NULL;
D3D11_SUBRESOURCE_DATA subResource;
subResource.pSysMem = io.Font->TexPixels;
subResource.SysMemPitch = desc.Width * 1;
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.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = desc.MipLevels;
srvDesc.Texture2D.MostDetailedMip = 0;
g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &g_pFontTextureView);
pTexture->Release();
}
LoadFontTexture(io.Font);
// Create texture sampler
{
@ -563,6 +570,11 @@ 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;