3DS: Initial commit

1 files changed, 144 insertions, 0 deletions

diff --git a/backends/platform/3ds/sprite.cpp b/backends/platform/3ds/sprite.cpp
new file mode 100644
index 0000000000..d779fa40ff
--- /dev/null
+++ b/backends/platform/3ds/sprite.cpp
@@ -0,0 +1,144 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+#include "backends/platform/3ds/sprite.h"
+#include <algorithm>
+#include <3ds.h>
+
+static uint nextHigher2(uint v) {
+	if (v == 0)
+		return 1;
+	v--;
+	v |= v >> 1;
+	v |= v >> 2;
+	v |= v >> 4;
+	v |= v >> 8;
+	v |= v >> 16;
+	return ++v;
+}
+
+Sprite::Sprite()
+: dirtyPixels(true)
+, dirtyMatrix(true)
+, actualWidth(0)
+, actualHeight(0)
+, posX(0)
+, posY(0)
+, scaleX(1.f)
+, scaleY(1.f)
+{
+	Mtx_Identity(&modelview);
+
+	vertices = (vertex*)linearAlloc(sizeof(vertex) * 4);
+}
+
+Sprite::~Sprite() {
+	//
+}
+
+void Sprite::create(uint16 width, uint16 height, const Graphics::PixelFormat &f) {
+	free();
+	
+	actualWidth = width;
+	actualHeight = height;
+	format = f;
+	w = std::max(nextHigher2(width), 64u);
+	h = std::max(nextHigher2(height), 64u);;
+	pitch = w * format.bytesPerPixel;
+	dirtyPixels = true;
+
+	if (width && height) {
+		pixels = linearAlloc(h * pitch);
+		C3D_TexInit(&texture, w, h, GPU_RGBA8);
+		C3D_TexSetFilter(&texture, GPU_LINEAR, GPU_NEAREST);
+		assert(pixels && texture.data);
+		clear();
+	}
+	
+	float x = 0.f, y = 0.f;
+	float u = (float)width/w;
+	float v = (float)height/h;
+	vertex tmp[4] = {
+		{{x,       y,        0.5f}, {0, 0}},
+		{{x+width, y,        0.5f}, {u, 0}},
+		{{x,       y+height, 0.5f}, {0, v}},
+		{{x+width, y+height, 0.5f}, {u, v}},
+	};
+	memcpy(vertices, tmp, sizeof(vertex) * 4);
+}
+
+
+void Sprite::free() {
+	linearFree(vertices);
+	linearFree(pixels);
+	C3D_TexDelete(&texture);
+	pixels = 0;
+	w = h = pitch = 0;
+	actualWidth = actualHeight = 0;
+	format = Graphics::PixelFormat();
+}
+
+void Sprite::convertToInPlace(const Graphics::PixelFormat &dstFormat, const byte *palette) {
+	//
+}
+
+void Sprite::render() {
+	if (dirtyPixels) {
+		dirtyPixels = false;
+		GSPGPU_FlushDataCache(pixels, w * h * format.bytesPerPixel);
+		C3D_SafeDisplayTransfer((u32*)pixels, GX_BUFFER_DIM(w, h), (u32*)texture.data, GX_BUFFER_DIM(w, h), TEXTURE_TRANSFER_FLAGS);
+		gspWaitForPPF();
+	}
+	C3D_TexBind(0, &texture);
+
+	C3D_BufInfo* bufInfo = C3D_GetBufInfo();
+	BufInfo_Init(bufInfo);
+	BufInfo_Add(bufInfo, vertices, sizeof(vertex), 2, 0x10);
+	C3D_DrawArrays(GPU_TRIANGLE_STRIP, 0, 4);
+}
+
+void Sprite::clear(uint32 color) {
+	dirtyPixels = true;
+	memset(pixels, color, w * h * format.bytesPerPixel);
+}
+
+void Sprite::setScale (float x, float y) {
+	scaleX = x;
+	scaleY = y;
+	dirtyMatrix = true;
+}
+
+void Sprite::setPosition(int x, int y) {
+	posX = x;
+	posY = y;
+	dirtyMatrix = true;
+}
+
+C3D_Mtx* Sprite::getMatrix() {
+	if (dirtyMatrix) {
+		dirtyMatrix = false;
+		Mtx_Identity(&modelview);
+		Mtx_Scale(&modelview, scaleX, scaleY, 1.f);
+		Mtx_Translate(&modelview, posX, posY, 0);
+	}
+	return &modelview;
+}