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[Feat] (Diligent, MG_Impl): wire GL ReadPixels entry to offscreen/user-FBO readback

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This commit is contained in:
BZLZHH
2026-08-23 09:11:56 +08:00
parent 403c82ac4a
commit 45b309db37
1 changed files with 15 additions and 0 deletions
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MobileGL/MG_Backend/Diligent/BackendObject_Diligent.cpp
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@@ -106,6 +106,20 @@ namespace MobileGL::MG_Backend::DiligentBackend {
}
}
void ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels) {
auto* renderer = GetActiveRenderer();
if (renderer == nullptr || pixels == nullptr) {
return;
}
// The Diligent backend's offscreen targets are RGBA8; the frontend currently
// uses this entry for the common GL_RGBA/GL_UNSIGNED_BYTE readback path.
if (format != GL_RGBA || type != GL_UNSIGNED_BYTE) {
return;
}
renderer->ReadPixels(static_cast<Uint32>(x), static_cast<Uint32>(y),
static_cast<Uint32>(width), static_cast<Uint32>(height), pixels);
}
void Present() {
auto* renderer = GetActiveRenderer();
if (renderer != nullptr) {
@@ -198,6 +212,7 @@ namespace MobileGL::MG_Backend::DiligentBackend {
m_functions.GL.DrawRangeElementsBaseVertex = DrawRangeElementsBaseVertex;
m_functions.GL.MultiDrawArrays = MultiDrawArrays;
m_functions.GL.MultiDrawElements = MultiDrawElements;
m_functions.GL.ReadPixels = ReadPixels;
m_functions.Present = Present;
m_initialized = true;