144 lines
3.4 KiB
C++
144 lines
3.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "backends/platform/3ds/sprite.h"
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#include "common/util.h"
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#include <3ds.h>
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static uint nextHigher2(uint v) {
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if (v == 0)
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return 1;
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v--;
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v |= v >> 1;
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v |= v >> 2;
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v |= v >> 4;
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v |= v >> 8;
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v |= v >> 16;
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return ++v;
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}
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Sprite::Sprite()
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: dirtyPixels(true)
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, dirtyMatrix(true)
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, actualWidth(0)
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, actualHeight(0)
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, posX(0)
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, posY(0)
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, scaleX(1.f)
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, scaleY(1.f)
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{
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Mtx_Identity(&modelview);
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vertices = (vertex *)linearAlloc(sizeof(vertex) * 4);
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}
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Sprite::~Sprite() {
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//
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}
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void Sprite::create(uint16 width, uint16 height, const Graphics::PixelFormat &f) {
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free();
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actualWidth = width;
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actualHeight = height;
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format = f;
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w = MAX(nextHigher2(width), 64u);
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h = MAX(nextHigher2(height), 64u);
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pitch = w * format.bytesPerPixel;
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dirtyPixels = true;
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if (width && height) {
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pixels = linearAlloc(h * pitch);
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C3D_TexInit(&texture, w, h, GPU_RGBA8);
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C3D_TexSetFilter(&texture, GPU_LINEAR, GPU_LINEAR);
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assert(pixels && texture.data);
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clear();
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}
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float x = 0.f, y = 0.f;
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float u = (float)width/w;
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float v = (float)height/h;
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vertex tmp[4] = {
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{{x, y, 0.5f}, {0, 0}},
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{{x+width, y, 0.5f}, {u, 0}},
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{{x, y+height, 0.5f}, {0, v}},
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{{x+width, y+height, 0.5f}, {u, v}},
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};
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memcpy(vertices, tmp, sizeof(vertex) * 4);
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}
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void Sprite::free() {
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linearFree(vertices);
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linearFree(pixels);
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C3D_TexDelete(&texture);
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pixels = 0;
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w = h = pitch = 0;
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actualWidth = actualHeight = 0;
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format = Graphics::PixelFormat();
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}
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void Sprite::convertToInPlace(const Graphics::PixelFormat &dstFormat, const byte *palette) {
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//
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}
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void Sprite::render() {
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if (dirtyPixels) {
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dirtyPixels = false;
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GSPGPU_FlushDataCache(pixels, w * h * format.bytesPerPixel);
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C3D_SafeDisplayTransfer((u32*)pixels, GX_BUFFER_DIM(w, h), (u32*)texture.data, GX_BUFFER_DIM(w, h), TEXTURE_TRANSFER_FLAGS);
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gspWaitForPPF();
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}
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C3D_TexBind(0, &texture);
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C3D_BufInfo *bufInfo = C3D_GetBufInfo();
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BufInfo_Init(bufInfo);
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BufInfo_Add(bufInfo, vertices, sizeof(vertex), 2, 0x10);
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C3D_DrawArrays(GPU_TRIANGLE_STRIP, 0, 4);
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}
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void Sprite::clear(uint32 color) {
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dirtyPixels = true;
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memset(pixels, color, w * h * format.bytesPerPixel);
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}
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void Sprite::setScale (float x, float y) {
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scaleX = x;
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scaleY = y;
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dirtyMatrix = true;
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}
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void Sprite::setPosition(int x, int y) {
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posX = x;
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posY = y;
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dirtyMatrix = true;
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}
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C3D_Mtx* Sprite::getMatrix() {
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if (dirtyMatrix) {
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dirtyMatrix = false;
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Mtx_Identity(&modelview);
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Mtx_Scale(&modelview, scaleX, scaleY, 1.f);
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Mtx_Translate(&modelview, posX, posY, 0);
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}
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return &modelview;
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}
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