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[Feat, Test] (GLImpl, GLState): implement glBeginConditionalRender and discard the commands GL 4.6 10.9 names

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swung0x48
2026-08-20 12:59:22 -04:00
parent 6b1d89f279
commit 1740a8a41a
7 changed files with 278 additions and 2 deletions
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MobileGL/MG_State/GLState/Core.h
+32
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@@ -368,6 +368,31 @@ namespace MobileGL {
return m_transformFeedbackGeometryCaptureDraws;
}
// Conditional rendering (GL 4.6 core 10.9). `discard` is the verdict already
// resolved from the query object at glBeginConditionalRender - the predicate is
// read ONCE there, not per command, because GL specifies the block against the
// result available at Begin and re-reading it would let a query that is still
// being written change the answer mid-block.
void BeginConditionalRender(GLuint queryId, GLenum mode, Bool discard) {
m_conditionalRenderActive = true;
m_conditionalRenderQuery = queryId;
m_conditionalRenderMode = mode;
m_conditionalRenderDiscards = discard;
}
void EndConditionalRender() {
m_conditionalRenderActive = false;
m_conditionalRenderQuery = 0;
m_conditionalRenderMode = GL_NONE;
m_conditionalRenderDiscards = false;
}
Bool IsConditionalRenderActive() const { return m_conditionalRenderActive; }
GLuint GetConditionalRenderQuery() const { return m_conditionalRenderQuery; }
// Whether the commands GL 4.6 core 10.9 makes conditional are being discarded
// right now. False whenever no block is open, so a caller needs no second test.
Bool ConditionalRenderDiscardsCommands() const {
return m_conditionalRenderActive && m_conditionalRenderDiscards;
}
// Transform feedback objects (ARB_transform_feedback2 / GL 4.0 core).
// The capture state above and the indexed GL_TRANSFORM_FEEDBACK_BUFFER
// binding points are object state, but the context keeps exactly one live
@@ -466,6 +491,13 @@ namespace MobileGL {
Uint64 m_transformFeedbackAccountedCaptureDraws = 0;
Uint64 m_transformFeedbackGeometryCaptureDraws = 0;
// Conditional rendering. Context state, not object state: GL 4.6 core 10.9 allows
// exactly one block open at a time and no object owns it.
Bool m_conditionalRenderActive = false;
Bool m_conditionalRenderDiscards = false;
GLuint m_conditionalRenderQuery = 0;
GLenum m_conditionalRenderMode = GL_NONE;
// Everything a transform feedback object owns while it is NOT the bound one.
struct TransformFeedbackObjectState {
struct SavedBufferBinding {