gpu_unai: avoid useless blits

diff --git a/plugins/gpu_unai/gpu.cpp b/plugins/gpu_unai/gpu.cpp
index 991610c..8a13521 100644 (file)
--- a/plugins/gpu_unai/gpu.cpp
+++ b/plugins/gpu_unai/gpu.cpp
@@ -40,6 +40,8 @@ bool frameLimit = false; /* frames to wait */
 bool light = true; /* lighting */
 bool blend = true; /* blending */
 
+bool fb_dirty = false;
+
 bool enableAbbeyHack = false; /* Abe's Odyssey hack */
 u8 BLEND_MODE;
 u8 TEXT_MODE;
@@ -298,6 +300,7 @@ void  GPU_writeDataMem(u32* dmaAddress, s32 dmaCount)
        }
 
        GPU_GP1 = (GPU_GP1 | 0x14000000) & ~0x60000000;
+       fb_dirty = true;
        pcsx4all_prof_end_with_resume(PCSX4ALL_PROF_GPU,PCSX4ALL_PROF_HW_WRITE);
        pcsx4all_prof_resume(PCSX4ALL_PROF_CPU);
 }
@@ -390,6 +393,7 @@ void  GPU_writeData(u32 data)
                gpuCheckPacket(data);
        }
        GPU_GP1 |= 0x14000000;
+       fb_dirty = true;
        pcsx4all_prof_end_with_resume(PCSX4ALL_PROF_GPU,PCSX4ALL_PROF_HW_WRITE);
        pcsx4all_prof_resume(PCSX4ALL_PROF_CPU);
 
@@ -529,10 +533,12 @@ void  GPU_writeStatus(u32 data)
        case 0x05:
                DisplayArea[0] = (data & 0x000003FF); //(short)(data & 0x3ff);
                DisplayArea[1] = ((data & 0x0007FC00)>>10); //(data & 0x000FFC00) >> 10; //(short)((data>>10)&0x1ff);
+               fb_dirty = true;
                break;
        case 0x07:
                DisplayArea[4] = data & 0x000003FF; //(short)(data & 0x3ff);
                DisplayArea[5] = (data & 0x000FFC00) >> 10; //(short)((data>>10) & 0x3ff);
+               fb_dirty = true;
                break;
        case 0x08:
                {
@@ -543,6 +549,7 @@ void  GPU_writeStatus(u32 data)
                        DisplayArea[3] = VerticalResolution[(GPU_GP1 >> 19) & 3];
                        isPAL = (data & 0x08) ? true : false; // if 1 - PAL mode, else NTSC
                }
+               fb_dirty = true;
                break;
        case 0x10:
                switch (data & 0xffff) {
@@ -901,8 +908,10 @@ void GPU_updateLace(void)
        // Interlace bit toggle
        GPU_GP1 ^= 0x80000000;
 
-       if (!((GPU_GP1&0x08000000) || (GPU_GP1&0x00800000)))
-               blit();
+       if (!fb_dirty || (GPU_GP1&0x08800000))
+               return;
+
+       blit();
 }
 
 long GPUopen(unsigned long *, char *, char *)