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Added ImGui image flags.

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This commit is contained in:
Branimir Karadžić 2015-10-09 15:37:22 -07:00
parent f1bba419b7
commit 44eacd0859
2 changed files with 77 additions and 20 deletions
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61
examples/common/imgui/imgui.h
View file

@ -208,20 +208,65 @@ bool imguiMouseOverArea();
namespace ImGui
{
#define IMGUI_FLAGS_NONE UINT16_C(0x0000)
#define IMGUI_FLAGS_ALPHA_BLEND UINT16_C(0x0001)
// Helper function for passing bgfx::TextureHandle to ImGui::Image.
inline void Image(bgfx::TextureHandle _handle, const ImVec2& _size, const ImVec2& _uv0 = ImVec2(0, 0), const ImVec2& _uv1 = ImVec2(1, 1), const ImVec4& _tint_col = ImVec4(1, 1, 1, 1), const ImVec4& _border_col = ImVec4(0, 0, 0, 0) )
inline void Image(bgfx::TextureHandle _handle
, uint16_t _flags
, const ImVec2& _size
, const ImVec2& _uv0 = ImVec2(0.0f, 0.0f)
, const ImVec2& _uv1 = ImVec2(1.0f, 1.0f)
, const ImVec4& _tintCol = ImVec4(1.0f, 1.0f, 1.0f, 1.0f)
, const ImVec4& _borderCol = ImVec4(0.0f, 0.0f, 0.0f, 0.0f)
)
{
union { bgfx::TextureHandle handle; ImTextureID ptr; } texture;
texture.handle = _handle;
Image(texture.ptr, _size, _uv0, _uv1, _tint_col, _border_col);
union { struct { uint16_t flags; bgfx::TextureHandle handle; } s; ImTextureID ptr; } texture;
texture.s.flags = _flags;
texture.s.handle = _handle;
Image(texture.ptr, _size, _uv0, _uv1, _tintCol, _borderCol);
}
// Helper function for passing bgfx::TextureHandle to ImGui::Image.
inline void Image(bgfx::TextureHandle _handle
, const ImVec2& _size
, const ImVec2& _uv0 = ImVec2(0.0f, 0.0f)
, const ImVec2& _uv1 = ImVec2(1.0f, 1.0f)
, const ImVec4& _tintCol = ImVec4(1.0f, 1.0f, 1.0f, 1.0f)
, const ImVec4& _borderCol = ImVec4(0.0f, 0.0f, 0.0f, 0.0f)
)
{
Image(_handle, IMGUI_FLAGS_ALPHA_BLEND, _size, _uv0, _uv1, _tintCol, _borderCol);
}
// Helper function for passing bgfx::TextureHandle to ImGui::ImageButton.
inline bool ImageButton(bgfx::TextureHandle _handle, const ImVec2& _size, const ImVec2& _uv0 = ImVec2(0,0), const ImVec2& _uv1 = ImVec2(1,1), int _frame_padding = -1, const ImVec4& _bg_col = ImVec4(0,0,0,0), const ImVec4& _tint_col = ImVec4(1,1,1,1))
inline bool ImageButton(bgfx::TextureHandle _handle
, uint16_t _flags
, const ImVec2& _size
, const ImVec2& _uv0 = ImVec2(0.0f, 0.0f)
, const ImVec2& _uv1 = ImVec2(1.0f, 1.0f)
, int _framePadding = -1
, const ImVec4& _bgCol = ImVec4(0.0f, 0.0f, 0.0f, 0.0f)
, const ImVec4& _tintCol = ImVec4(1.0f, 1.0f, 1.0f, 1.0f)
)
{
union { bgfx::TextureHandle handle; ImTextureID ptr; } texture;
texture.handle = _handle;
return ImageButton(texture.ptr, _size, _uv0, _uv1, _frame_padding, _bg_col, _tint_col);
union { struct { uint16_t flags; bgfx::TextureHandle handle; } s; ImTextureID ptr; } texture;
texture.s.flags = _flags;
texture.s.handle = _handle;
return ImageButton(texture.ptr, _size, _uv0, _uv1, _framePadding, _bgCol, _tintCol);
}
// Helper function for passing bgfx::TextureHandle to ImGui::ImageButton.
inline bool ImageButton(bgfx::TextureHandle _handle
, const ImVec2& _size
, const ImVec2& _uv0 = ImVec2(0.0f, 0.0f)
, const ImVec2& _uv1 = ImVec2(1.0f, 1.0f)
, int _framePadding = -1
, const ImVec4& _bgCol = ImVec4(0.0f, 0.0f, 0.0f, 0.0f)
, const ImVec4& _tintCol = ImVec4(1.0f, 1.0f, 1.0f, 1.0f)
)
{
return ImageButton(_handle, IMGUI_FLAGS_ALPHA_BLEND, _size, _uv0, _uv1, _framePadding, _bgCol, _tintCol);
}
} // namespace ImGui

30
examples/common/imgui/ocornut_imgui.cpp
View file

@ -320,25 +320,37 @@ struct OcornutImguiContext
}
else if (0 != cmd->ElemCount)
{
bgfx::setState(0
uint64_t state = 0
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_ALPHA_WRITE
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA)
| BGFX_STATE_MSAA
);
;
bgfx::TextureHandle th = m_texture;
if (NULL != cmd->TextureId)
{
union { ImTextureID ptr; struct { uint16_t flags; bgfx::TextureHandle handle; } s; } texture = { cmd->TextureId };
state |= 0 != (IMGUI_FLAGS_ALPHA_BLEND & texture.s.flags)
? BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA)
: BGFX_STATE_NONE
;
th = texture.s.handle;
}
else
{
state |= BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA);
}
const uint16_t xx = uint16_t(bx::fmax(cmd->ClipRect.x, 0.0f) );
const uint16_t yy = uint16_t(bx::fmax(cmd->ClipRect.y, 0.0f) );
bgfx::setScissor(xx, yy
, uint16_t(bx::fmin(cmd->ClipRect.z, 65535.0f)-xx)
, uint16_t(bx::fmin(cmd->ClipRect.w, 65535.0f)-yy)
);
union { void* ptr; bgfx::TextureHandle handle; } texture = { cmd->TextureId };
bgfx::setTexture(0, s_tex, 0 != texture.handle.idx
? texture.handle
: m_texture
);
bgfx::setState(state);
bgfx::setTexture(0, s_tex, th);
bgfx::setVertexBuffer(&tvb, 0, numVertices);
bgfx::setIndexBuffer(&tib, offset, cmd->ElemCount);
bgfx::submit(m_viewId, m_program);