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Metal framebuffer attachment support

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08-update: added a cube that has a texturecube that is rendered using framebuffer attachment. It looks the same as the one whose texture is updated with compute shader.
This commit is contained in:
Attila Kocsis
2019-01-24 19:20:35 +01:00
parent 9ab5ca7646
commit c39408173d
3 changed files with 97 additions and 16 deletions
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57
examples/08-update/update.cpp
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@@ -98,6 +98,16 @@ static const uint16_t s_cubeIndices[] =
21, 22, 23,
};
BX_STATIC_ASSERT(BX_COUNTOF(s_cubeIndices) == 36);
bx::Vec3 s_faceColors[] =
{
{ 0.75f, 0.0f, 0.0f },
{ 0.75f, 0.75f, 0.0f },
{ 0.75f, 0.0f, 0.75f },
{ 0.0f, 0.75f, 0.0f },
{ 0.0f, 0.75f, 0.75f },
{ 0.0f, 0.0f, 0.75f },
};
static void updateTextureCubeRectBgra8(
bgfx::TextureHandle _handle
@@ -290,6 +300,23 @@ public:
, BGFX_TEXTURE_COMPUTE_WRITE
);
}
{
m_textureCube[3] = bgfx::createTextureCube(
kTextureSide
, false
, 1
, bgfx::TextureFormat::RGBA8
, BGFX_TEXTURE_RT
);
for (uint32_t ii = 0; ii < BX_COUNTOF(m_textureCubeFaceFb); ++ii)
{
bgfx::Attachment at;
at.init(m_textureCube[3], bgfx::Access::Write, ii);
m_textureCubeFaceFb[ii] = bgfx::createFrameBuffer(1, &at);
}
}
m_texture2d = bgfx::createTexture2D(
kTexture2dSize
@@ -347,6 +374,14 @@ public:
}
}
for (uint32_t ii = 0; ii<BX_COUNTOF(m_textureCubeFaceFb); ++ii)
{
if (bgfx::isValid(m_textureCubeFaceFb[ii]))
{
bgfx::destroy(m_textureCubeFaceFb[ii]);
}
}
bgfx::destroy(m_ibh);
bgfx::destroy(m_vbh);
if (bgfx::isValid(m_program3d) )
@@ -502,13 +537,30 @@ public:
bgfx::setImage(0, m_textureCube[2], 0, bgfx::Access::Write);
bgfx::dispatch(0, m_programCompute, kTextureSide/16, kTextureSide/16);
}
for (uint32_t ii = 0; ii < BX_COUNTOF(m_textureCubeFaceFb); ++ii)
{
bgfx::ViewId viewId = ii+2;
bgfx::setViewFrameBuffer(viewId, m_textureCubeFaceFb[ii]);
bx::Vec3 color = bx::add(s_faceColors[ii], bx::sin(time*4.0f)*0.25f);
uint32_t colorRGB8 =
uint32_t(bx::toUnorm(color.x, 255.0f) ) << 24
| uint32_t(bx::toUnorm(color.y, 255.0f) ) << 16
| uint32_t(bx::toUnorm(color.z, 255.0f) ) << 8;
bgfx::setViewClear(viewId, BGFX_CLEAR_COLOR, colorRGB8);
bgfx::setViewRect(viewId, 0,0,512,512);
bgfx::touch(viewId);
}
for (uint32_t ii = 0; ii < BX_COUNTOF(m_textureCube); ++ii)
{
if (bgfx::isValid(m_textureCube[ii]))
{
float mtx[16];
bx::mtxSRT(mtx, 0.7f, 0.7f, 0.7f, time, time*0.37f, 0.0f, -2.0f +ii*2.0f, 0.0f, 0.0f);
bx::mtxSRT(mtx, 0.65f, 0.65f, 0.65f, time, time*0.37f, 0.0f, -2.5f +ii*1.8f, 0.0f, 0.0f);
// Set model matrix for rendering.
bgfx::setTransform(mtx);
@@ -661,7 +713,8 @@ public:
bgfx::TextureHandle m_textures[12];
bgfx::TextureHandle m_textures3d[3];
bgfx::TextureHandle m_texture2d;
bgfx::TextureHandle m_textureCube[3];
bgfx::TextureHandle m_textureCube[4];
bgfx::FrameBufferHandle m_textureCubeFaceFb[6];
bgfx::IndexBufferHandle m_ibh;
bgfx::VertexBufferHandle m_vbh;
bgfx::ProgramHandle m_program3d;