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Front facing (#1904)

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* Added BGFX_STATE_FRONT_CCW to defines.h and implemented initial usage only in renderer_d3d11.cpp.

* set front facing for d3d12, gl metal and vulkan

* front facing method Metal

* tabs

* removed tab
idl updated
This commit is contained in:
Cedric Guillemet 2019-10-26 05:07:05 +02:00 committed by Бранимир Караџић
parent 8ab1286a92
commit 6a883a33fd
8 changed files with 29 additions and 4 deletions
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3
include/bgfx/defines.h
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@ -90,6 +90,9 @@
#define BGFX_STATE_CULL_SHIFT 36 //!< Culling mode bit shift
#define BGFX_STATE_CULL_MASK UINT64_C(0x0000003000000000) //!< Culling mode bit mask
/// Front winding direction. Will default to clockwise unless otherwise specified.
#define BGFX_STATE_FRONT_CCW UINT64_C(0x0000008000000000) //!< Front counter-clockwise (default is clockwise).
/**
* Alpha reference value.
*

4
scripts/bgfx.idl
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@ -83,6 +83,10 @@ flag.StateCull { bits = 64, shift = 36, range = 2, base = 1, desc = "Culling mod
.Ccw --- Cull counter-clockwise triangles.
()
--- Font facing. When BGFX_STATE_FRONT_CCW is not specified, front facing is CW
flag.StateFrontCCW { bits = 64, shift = 39, range = 1, base = 1, desc = "Front facing" }
()
--- Alpha reference value.
flag.StateAlphaRef { bits = 64, shift = 40, range = 8, desc = "Alpha reference", "helper" }

3
src/renderer_d3d11.cpp
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@ -2846,6 +2846,7 @@ namespace bgfx { namespace d3d11
| BGFX_STATE_MSAA
| BGFX_STATE_LINEAA
| BGFX_STATE_CONSERVATIVE_RASTER
| BGFX_STATE_FRONT_CCW
;
_state |= _wireframe ? BGFX_STATE_PT_LINES : BGFX_STATE_NONE;
_state |= _scissor ? BGFX_STATE_RESERVED_MASK : 0;
@ -2862,7 +2863,7 @@ namespace bgfx { namespace d3d11
D3D11_RASTERIZER_DESC2 desc;
desc.FillMode = _wireframe ? D3D11_FILL_WIREFRAME : D3D11_FILL_SOLID;
desc.CullMode = s_cullMode[cull];
desc.FrontCounterClockwise = false;
desc.FrontCounterClockwise = !!(_state&BGFX_STATE_FRONT_CCW);
desc.DepthBias = 0;
desc.DepthBiasClamp = 0.0f;
desc.SlopeScaledDepthBias = 0.0f;

4
src/renderer_d3d12.cpp
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@ -2557,8 +2557,8 @@ namespace bgfx { namespace d3d12
? D3D12_FILL_MODE_WIREFRAME
: D3D12_FILL_MODE_SOLID
;
_desc.CullMode = s_cullMode[cull];
_desc.FrontCounterClockwise = false;
_desc.CullMode = s_cullMode[cull];
_desc.FrontCounterClockwise = !!(_state&BGFX_STATE_FRONT_CCW);;
_desc.DepthBias = 0;
_desc.DepthBiasClamp = 0.0f;
_desc.SlopeScaledDepthBias = 0.0f;

6
src/renderer_gl.cpp
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@ -6892,8 +6892,14 @@ BX_TRACE("%d, %d, %d, %s", _array, _srgb, _mipAutogen, getName(_format) );
| BGFX_STATE_MSAA
| BGFX_STATE_LINEAA
| BGFX_STATE_CONSERVATIVE_RASTER
| BGFX_STATE_FRONT_CCW
) & changedFlags)
{
if (BGFX_STATE_FRONT_CCW & changedFlags)
{
GL_CHECK(glFrontFace((BGFX_STATE_FRONT_CCW & newFlags) ? GL_CCW : GL_CW) );
}
if (BGFX_STATE_CULL_MASK & changedFlags)
{
if (BGFX_STATE_CULL_CCW & newFlags)

5
src/renderer_mtl.h
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@ -426,6 +426,11 @@ namespace bgfx { namespace mtl
[m_obj setBlendColorRed:_red green:_green blue:_blue alpha:_alpha];
}
void setFrontFacing(MTLWinding _frontFacing)
{
[m_obj setFrontFacing:_frontFacing];
}
void setCullMode(MTLCullMode _cullMode)
{
[m_obj setCullMode:_cullMode];

6
src/renderer_mtl.mm
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@ -4227,8 +4227,14 @@ namespace bgfx { namespace mtl
| BGFX_STATE_CULL_MASK
| BGFX_STATE_ALPHA_REF_MASK
| BGFX_STATE_PT_MASK
| BGFX_STATE_FRONT_CCW
) & changedFlags)
{
if (BGFX_STATE_FRONT_CCW & changedFlags)
{
rce.setFrontFacing((newFlags&BGFX_STATE_FRONT_CCW) ? MTLWindingCounterClockwise : MTLWindingClockwise);
}
if (BGFX_STATE_CULL_MASK & changedFlags)
{
const uint64_t pt = newFlags&BGFX_STATE_CULL_MASK;

2
src/renderer_vk.cpp
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@ -3074,7 +3074,7 @@ VK_IMPORT_DEVICE
: VK_POLYGON_MODE_FILL
;
_desc.cullMode = s_cullMode[cull];
_desc.frontFace = VK_FRONT_FACE_CLOCKWISE;
_desc.frontFace = (_state&BGFX_STATE_FRONT_CCW) ? VK_FRONT_FACE_COUNTER_CLOCKWISE : VK_FRONT_FACE_CLOCKWISE;
_desc.depthBiasEnable = VK_FALSE;
_desc.depthBiasConstantFactor = 0.0f;
_desc.depthBiasClamp = 0.0f;