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https://github.com/AntonioND/nitro-engine.git
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1acfca1a24
This change is a bit pedantic, but it makes the ROMs run better in DeSmuMe. Some examples (particularly the dual 3D examples) used to flicker during one or two seconds right after starting. In dual 3D examples the top and bottom screen would start swapped, and they would eventually swap and stop flickering. This would never happen in melonDS or real hardware. I suspect this is because of the interaction between GFX_FLUSH and swiWaitForVBlank(), where there would be some timing difference to reach the first swiWaitForVBlank() or GFX_FLUSH, and that caused the desync. This commit moves swiWaitForVBlank() to the beginning of the game loop. This means that, even in the first iteration of the game loop, all emulators and hardware will be synchronized. This doesn't actually matter in any other situation, it just makes the first iteration consistent.
100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
// SPDX-License-Identifier: CC0-1.0
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//
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// SPDX-FileContributor: Antonio Niño Díaz, 2008-2011, 2019, 2022
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//
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// This file is part of Nitro Engine
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#include <NEMain.h>
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#include "sphere_bin.h"
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#define NUM_MODELS 16
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NE_Camera *Camera;
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NE_Model *Model[NUM_MODELS];
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// Cloning models will avoid loading into memory the same mesh many times. This
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// is really useful when you want to draw lots of the same model in different
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// locations, with different animations, etc. You won't need to store multiple
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// copies of the mesh in RAM.
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//
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// If you clone an animated model you will be able to set different animations
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// for each model.
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void Draw3DScene(void)
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{
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// Setup camera and draw all objects.
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NE_CameraUse(Camera);
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for (int i = 0; i < NUM_MODELS; i++)
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NE_ModelDraw(Model[i]);
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// Get some information AFTER drawing but BEFORE returning from the
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// function.
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printf("\x1b[0;0HPolygon RAM: %d \nVertex RAM: %d ",
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NE_GetPolygonCount(), NE_GetVertexCount());
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}
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int main(void)
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{
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irqEnable(IRQ_HBLANK);
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irqSet(IRQ_VBLANK, NE_VBLFunc);
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irqSet(IRQ_HBLANK, NE_HBLFunc);
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// Init Nitro Engine.
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NE_Init3D();
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// libnds uses VRAM_C for the text console, reserve A and B only
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NE_TextureSystemReset(0, 0, NE_VRAM_AB);
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// Init console in non-3D screen
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consoleDemoInit();
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// Allocate space for everything.
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for (int i = 0; i < NUM_MODELS; i++)
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Model[i] = NE_ModelCreate(NE_Static);
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Camera = NE_CameraCreate();
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// Setup camera
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NE_CameraSet(Camera,
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-3.5, 1.5, 1.25,
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0, 1.5, 1.25,
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0, 1, 0);
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// Load model once
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NE_ModelLoadStaticMesh(Model[0], (u32 *)sphere_bin);
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// Clone model to the test of the objects
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for (int i = 1; i < NUM_MODELS; i++)
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{
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NE_ModelClone(Model[i], // Destination
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Model[0]); // Source model
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}
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// Set up light
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NE_LightSet(0, NE_Yellow, 0, -0.5, -0.5);
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// Enable shading
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NE_ShadingEnable(true);
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// Set start coordinates/rotation of the models
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for (int i = 0; i < NUM_MODELS; i++)
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{
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NE_ModelSetRot(Model[i], i, i * 30, i * 20);
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NE_ModelSetCoord(Model[i], 0, i % 4, i / 4);
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}
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while (1)
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{
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NE_WaitForVBL(0);
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// Rotate every model
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for (int i = 0; i < NUM_MODELS; i++)
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NE_ModelRotate(Model[i], -i, i % 5, 5 - i);
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// Draw scene
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NE_Process(Draw3DScene);
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}
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return 0;
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}
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