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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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62
examples/directx9_example/main.cpp
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@ -14,7 +14,6 @@ static HWND hWnd;
static LPDIRECT3D9 g_pD3D = NULL; // Used to create the D3DDevice
static LPDIRECT3DDEVICE9 g_pd3dDevice = NULL; // Our rendering device
static LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL; // Buffer to hold vertices
static LPDIRECT3DTEXTURE9 g_pTexture = NULL; // Our texture
struct CUSTOMVERTEX
{
D3DXVECTOR3 pos;
@ -70,16 +69,13 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
g_pd3dDevice->SetRenderState( D3DRS_SCISSORTESTENABLE, true );
// Setup texture
g_pd3dDevice->SetTexture( 0, g_pTexture );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_SELECTARG1 );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_DIFFUSE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR );
g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_SELECTARG1 );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_DIFFUSE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MINFILTER, D3DTEXF_POINT );
g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MAGFILTER, D3DTEXF_POINT );
// Setup orthographic projection matrix
D3DXMATRIXA16 mat;
@ -99,6 +95,7 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
{
const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
const RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
g_pd3dDevice->SetTexture( 0, (LPDIRECT3DTEXTURE9)pcmd->texture_id );
g_pd3dDevice->SetScissorRect(&r);
g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, vtx_offset, pcmd->vtx_count/3);
vtx_offset += pcmd->vtx_count;
@ -133,7 +130,8 @@ void CleanupDevice()
if (g_pVB) g_pVB->Release();
// InitDeviceD3D
if (g_pTexture) g_pTexture->Release();
if (LPDIRECT3DTEXTURE9 tex = (LPDIRECT3DTEXTURE9)ImGui::GetIO().Font->TexID)
tex->Release();
if (g_pd3dDevice) g_pd3dDevice->Release();
if (g_pD3D) g_pD3D->Release();
}
@ -176,6 +174,31 @@ 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());
LPDIRECT3DTEXTURE9 pTexture = NULL;
if (D3DXCreateTexture(g_pd3dDevice, font->TexWidth, font->TexHeight, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8, D3DPOOL_DEFAULT, &pTexture) < 0)
{
IM_ASSERT(0);
return;
}
// Copy pixels
D3DLOCKED_RECT tex_locked_rect;
if (pTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK)
{
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);
pTexture->UnlockRect(0);
font->TexID = (void *)pTexture;
}
void InitImGui()
{
RECT rect;
@ -219,15 +242,7 @@ 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
if (D3DXCreateTexture(g_pd3dDevice, io.Font->TexWidth, io.Font->TexHeight, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8, D3DPOOL_DEFAULT, &g_pTexture) < 0) { IM_ASSERT(0); return; }
D3DLOCKED_RECT tex_locked_rect;
if (g_pTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK) { IM_ASSERT(0); return; }
for (int y = 0; y < io.Font->TexHeight; y++)
memcpy((unsigned char *)tex_locked_rect.pBits + tex_locked_rect.Pitch * y, io.Font->TexPixels + io.Font->TexWidth * y, io.Font->TexWidth);
g_pTexture->UnlockRect(0);
LoadFontTexture(io.Font);
}
INT64 ticks_per_second = 0;
@ -313,6 +328,11 @@ 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;