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Hack that converts immediate draws to through-mode draws. This won't

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work correctly in all cases - but it's enough for Thrillville which uses
it to clear only. Works around #7459.
This commit is contained in:
Henrik Rydgård 2017-11-24 21:45:25 +01:00
parent 28b60a724f
commit f2db0339ad
2 changed files with 39 additions and 6 deletions
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42
GPU/GPUCommon.cpp
View file

@ -1826,14 +1826,46 @@ void GPUCommon::Execute_ImmVertexAlphaPrim(u32 op, u32 diff) {
v.color1_32 = gstate.imm_scv & 0xFFFFFF;
int prim = (op >> 8) & 0xF;
if (prim != 7) {
immPrim_ = prim;
} else {
// Time to submit! This can go through the software transform path but skipping the actual transform...
// drawEngineCommon_->SubmitImm(immBuffer_, immCount_);
immCount_ = 0;
immPrim_ = (GEPrimitiveType)prim;
} else if (prim == 7 && immCount_ == 2) {
FlushImm();
}
}
void GPUCommon::FlushImm() {
SetDrawType(DRAW_PRIM, immPrim_);
framebufferManager_->SetRenderFrameBuffer(gstate_c.IsDirty(DIRTY_FRAMEBUF), gstate_c.skipDrawReason);
if (gstate_c.skipDrawReason & (SKIPDRAW_SKIPFRAME | SKIPDRAW_NON_DISPLAYED_FB)) {
// No idea how many cycles to skip, heh.
return;
}
UpdateUVScaleOffset();
// Instead of finding a proper point to flush, we just emit a full rectangle every time one
// is finished.
// And instead of plumbing through, we'll cheat and just turn these into through vertices.
// Since the only known use is Thrillville and it only uses it to clear, we just use color and pos.
struct ImmVertex {
uint32_t color;
float xyz[3];
};
ImmVertex temp[MAX_IMMBUFFER_SIZE];
for (int i = 0; i < immCount_; i++) {
temp[i].color = immBuffer_[i].color0_32;
temp[i].xyz[0] = immBuffer_[i].pos[0];
temp[i].xyz[1] = immBuffer_[i].pos[1];
temp[i].xyz[2] = immBuffer_[i].pos[2];
}
int vtype = GE_VTYPE_POS_FLOAT | GE_VTYPE_COL_8888 | GE_VTYPE_THROUGH;
int bytesRead;
drawEngineCommon_->DispatchSubmitPrim(temp, nullptr, immPrim_, immCount_, vtype, &bytesRead);
drawEngineCommon_->DispatchFlush();
// TOOD: In the future, make a special path for these.
// drawEngineCommon_->DispatchSubmitImm(immBuffer_, immCount_);
immCount_ = 0;
}
void GPUCommon::ExecuteOp(u32 op, u32 diff) {
const u32 cmd = op >> 24;

3
GPU/GPUCommon.h
View file

@ -323,9 +323,10 @@ protected:
TransformedVertex immBuffer_[MAX_IMMBUFFER_SIZE];
int immCount_ = 0;
int immPrim_ = 0;
GEPrimitiveType immPrim_;
private:
void FlushImm();
// Debug stats.
double timeSteppingStarted_;
double timeSpentStepping_;