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D3D11, D3D12, GL, VK: Resolve when blitting from sampleable MSAA surface. (#3907)

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This commit is contained in:
Branimir Karadžić
2026-08-20 05:39:04 +00:00
committed by GitHub
parent 7e2f4e34c0
commit d8db55f812
6 changed files with 335 additions and 98 deletions
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64
src/renderer_gl.cpp
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@@ -7277,6 +7277,62 @@ namespace bgfx { namespace gl
;
}
static bool blitMsaaResolve2D(
const BlitItem& _bi
, const TextureGL& _src
, const TextureGL& _dst
, uint32_t _width
, uint32_t _height
, GLuint _currentFbo
)
{
if (GL_TEXTURE_2D_MULTISAMPLE != _src.m_target
|| GL_TEXTURE_2D != _dst.m_target
|| 1 < _bi.m_depth
|| NULL == glBlitFramebuffer)
{
return false;
}
GLuint fbo[2];
GL_CHECK(glGenFramebuffers(BX_COUNTOF(fbo), fbo) );
GL_CHECK(glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo[0]) );
GL_CHECK(glFramebufferTexture2D(GL_READ_FRAMEBUFFER
, GL_COLOR_ATTACHMENT0
, _src.m_target
, _src.m_id
, 0
) );
GL_CHECK(glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo[1]) );
GL_CHECK(glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER
, GL_COLOR_ATTACHMENT0
, _dst.m_target
, _dst.m_id
, _bi.m_dstMip
) );
GL_CHECK(glDisable(GL_SCISSOR_TEST) );
GL_CHECK(glBlitFramebuffer(
_bi.m_srcX
, _bi.m_srcY
, _bi.m_srcX + _width
, _bi.m_srcY + _height
, _bi.m_dstX
, _bi.m_dstY
, _bi.m_dstX + _width
, _bi.m_dstY + _height
, GL_COLOR_BUFFER_BIT
, GL_NEAREST
) );
GL_CHECK(glDeleteFramebuffers(BX_COUNTOF(fbo), fbo) );
GL_CHECK(glBindFramebuffer(GL_FRAMEBUFFER, _currentFbo) );
return true;
}
static bool blitCompressed2D(
const BlitItem& _bi
, const TextureGL& _src
@@ -7409,7 +7465,13 @@ namespace bgfx { namespace gl
}
}
GL_CHECK(glCopyImageSubData(src.m_id
if (blitMsaaResolve2D(bi, src, dst, width, height, m_currentFbo) )
{
continue;
}
GL_CHECK(glCopyImageSubData(
src.m_id
, src.m_target
, bi.m_srcMip
, bi.m_srcX