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[Feat] (DirectVulkan, MG_Impl): depth-stencil ReadPixels and combined-attachment queries

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glReadPixels now serves GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL and
GL_STENCIL_INDEX from the read framebuffer's depth/stencil attachment:
per-aspect vkCmdCopyImageToBuffer copies (4-byte-aligned stencil region)
with CPU repacking into GL_FLOAT / GL_UNSIGNED_SHORT / GL_UNSIGNED_INT /
GL_UNSIGNED_INT_24_8 / GL_FLOAT_32_UNSIGNED_INT_24_8_REV /
GL_UNSIGNED_BYTE layouts, honoring pack state and pixel-pack buffers.

GL_DEPTH_STENCIL_ATTACHMENT parameter queries follow the spec's combined
rules: differing depth/stencil attachment images (or a lone half) fail
with GL_INVALID_OPERATION, as does GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
on the combined name. packed_depth_stencil.verify_parameters.* and
verify_read_pixels.depth24_stencil8 now pass.
This commit is contained in:
BZLZHH
2026-07-31 18:41:08 -04:00
parent e6ebe7078d
commit 282dd69230
3 changed files with 370 additions and 12 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
+5
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@@ -200,6 +200,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
GLsizei srcWidth, GLsizei srcHeight, GLsizei srcDepth);
void GenerateMipmap(GLenum target);
void ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels);
// GL_DEPTH_COMPONENT / GL_DEPTH_STENCIL / GL_STENCIL_INDEX readback from the
// read framebuffer's depth/stencil attachment (per-aspect buffer copies with
// CPU repacking into the requested client layout).
void ReadDepthStencilPixels(MG_State::GLState::FramebufferObject& readFbo, GLint x, GLint y, GLsizei width,
GLsizei height, GLenum format, GLenum type, void* pixels);
static SizeT GetReadbackTexelSize(VkFormat sourceFormat);
static Bool ConvertReadbackPixels(const Uint8* sourcePixels, VkFormat sourceFormat,
GLsizei width, GLsizei height, GLenum destinationFormat,