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https://github.com/RetroPortingToolKit/psxrecomp
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Matthew Stanley
37 lines
1.8 KiB
C
37 lines
1.8 KiB
C
#ifndef GL_BATCH_POLICY_H
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#define GL_BATCH_POLICY_H
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/* Textured-batch grouping for gpu_gl_renderer.c, a build-time tier
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* (runtime.cmake PSX_GL_BATCH_IMPL = LLE | HLE; recomp-template HLE.md).
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*
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* Contract, both tiers: classify one textured primitive from its blend mode
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* (semi: -1 opaque, 0..3 the PS1 modes), the destination mask-check state
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* (GP0(E6h) bit 1) and whether an opted-in immutable texture bank already
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* permits dual-source batching. Returns its batch key and whether it must be
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* drawn alone. Keys: -1 opaque passes; 0..3 the two-pass STP split with that
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* blend; 4 the single-pass dual-source draw, which blends modes 0/1/3 per
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* fragment and gives opaque texels (STP=0 or an opaque primitive) destination
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* factor zero. The renderer still splits batches on every other key (mask-set,
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* filter, texture window, backdrop gate, depth mode, texture source) and
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* flushes before any primitive samples VRAM a queued draw has written.
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* Either tier draws in submission (painter) order and produces the LLE pixels.
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*
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* LLE: the reference. Every semi-transparent primitive is drawn alone.
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* HLE: opaque primitives and modes 0/1/3 share one painter-ordered
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* dual-source draw while mask checking is off. GL blends the primitives
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* of one draw in order, so the result equals drawing them one by one.
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* Mode 2 (subtractive) and mask-checked draws keep the LLE behaviour. */
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typedef struct {
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int key;
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int isolate;
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} GlBatchClass;
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GlBatchClass gl_batch_policy_lle(int semi, int mask_check, int bank_batch);
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GlBatchClass gl_batch_policy_hle(int semi, int mask_check, int bank_batch);
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/* The tier this build selected. */
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GlBatchClass gl_batch_classify(int semi, int mask_check, int bank_batch);
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const char *gl_batch_policy_name(void);
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#endif
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