public void GenerateDataBuffer(SpriteVOrigin vOrigin, SpriteHOrigin hOrigin)
{
//If there is a texture loaded and clips to make vertex data from
if (TextureID != 0 && mClips.Count > 0)
{
//Allocate vertex buffer data
int totalSprites = mClips.Count;
VertexData[] vertexData = new VertexData[totalSprites * 4];
mIndexBuffers = new int[totalSprites];
//Allocate vertex data buffer name
GL.GenBuffers(1, out mVertexDataBuffer);
//Allocate index buffers names
GL.GenBuffers(totalSprites, mIndexBuffers);
//Go through clips
float tW = ImageWidth;
float tH = ImageHeight;
int[] spriteIndices = new int[4] {
0, 0, 0, 0
};
//Origin variables
float vTop = 0;
float vBottom = 0;
float vLeft = 0;
float vRight = 0;
for (int i = 0; i < totalSprites; ++i)
{
//Initialize indices
spriteIndices[0] = i * 4 + 0;
spriteIndices[1] = i * 4 + 1;
spriteIndices[2] = i * 4 + 2;
spriteIndices[3] = i * 4 + 3;
//Set origin (vertical)
switch (vOrigin)
{
case SpriteVOrigin.Top:
{
vTop = 0;
vBottom = mClips[i].Height;
}
break;
case SpriteVOrigin.Bottom:
{
vTop = -mClips[i].Height;
vBottom = 0;
}
break;
default:
{
vTop = (float)-mClips[i].Height / 2;
vBottom = (float)mClips[i].Height / 2;
}
break;
}
//Set origin (horizontal)
switch (hOrigin)
{
case SpriteHOrigin.Left:
{
vLeft = 0;
vRight = mClips[i].Width;
}
break;
case SpriteHOrigin.Right:
{
vLeft = -mClips[i].Width;
vRight = 0;
}
break;
default:
{
vLeft = (float)-mClips[i].Width / 2;
vRight = (float)mClips[i].Width / 2;
}
break;
}
//Top left
vertexData[spriteIndices[0]] = new VertexData(vLeft, vTop, mClips[i].Left / tW, mClips[i].Top / tH);
//Top right
vertexData[spriteIndices[1]] = new VertexData(vRight, vTop, mClips[i].Right / tW, mClips[i].Top / tH);
//Bottom right
vertexData[spriteIndices[2]] = new VertexData(vRight, vBottom, mClips[i].Right / tW, mClips[i].Bottom / tH);
//Bottom left
vertexData[spriteIndices[3]] = new VertexData(vLeft, vBottom, mClips[i].Left / tW, mClips[i].Bottom / tH);
//Bind sprite index buffer data
GL.BindBuffer(BufferTarget.ElementArrayBuffer, mIndexBuffers[i]);
GL.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)(4 * sizeof(int)), spriteIndices, BufferUsageHint.StaticDraw);
}
//Bind vertex data
GL.BindBuffer(BufferTarget.ArrayBuffer, mVertexDataBuffer);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(totalSprites * 4 * VertexData.SizeInBytes), vertexData, BufferUsageHint.StaticDraw);
}
else
{
if (TextureID == 0)
{
throw new Exception("No texture to render with!");
}
if (mClips.Count <= 0)
{
throw new Exception("No clips to generate vertex data from!");
}
}
}
public void GenerateDataBuffer(SpriteVOrigin vOrigin, SpriteHOrigin hOrigin)
{
//If there is a texture loaded and clips to make vertex data from
if( TextureID != 0 && mClips.Count > 0 ) {
//Allocate vertex buffer data
int totalSprites = mClips.Count;
VertexData[] vertexData = new VertexData[ totalSprites * 4 ];
mIndexBuffers = new int[ totalSprites ];
//Allocate vertex data buffer name
GL.GenBuffers( 1, out mVertexDataBuffer );
//Allocate index buffers names
GL.GenBuffers( totalSprites, mIndexBuffers );
//Go through clips
float tW = ImageWidth;
float tH = ImageHeight;
int[] spriteIndices = new int[ 4 ] { 0, 0, 0, 0 };
//Origin variables
float vTop = 0;
float vBottom = 0;
float vLeft = 0;
float vRight = 0;
for( int i = 0; i < totalSprites; ++i ) {
//Initialize indices
spriteIndices[ 0 ] = i * 4 + 0;
spriteIndices[ 1 ] = i * 4 + 1;
spriteIndices[ 2 ] = i * 4 + 2;
spriteIndices[ 3 ] = i * 4 + 3;
//Set origin (vertical)
switch (vOrigin) {
case SpriteVOrigin.Top: {
vTop = 0;
vBottom = mClips[ i ].Height;
}
break;
case SpriteVOrigin.Bottom: {
vTop = -mClips[ i ].Height;
vBottom = 0;
}
break;
default: {
vTop = (float)-mClips[ i ].Height / 2;
vBottom = (float)mClips[ i ].Height / 2;
}
break;
}
//Set origin (horizontal)
switch (hOrigin) {
case SpriteHOrigin.Left: {
vLeft = 0;
vRight = mClips[ i ].Width;
}
break;
case SpriteHOrigin.Right: {
vLeft = -mClips[ i ].Width;
vRight = 0;
}
break;
default: {
vLeft = (float)-mClips[ i ].Width / 2;
vRight = (float)mClips[ i ].Width / 2;
}
break;
}
//Top left
vertexData[spriteIndices[0]] = new VertexData(vLeft, vTop, ((float)mClips[i].Left) / tW, ((float)mClips[i].Top) / tH);
//Top right
vertexData[spriteIndices[1]] = new VertexData(vRight, vTop, ((float)mClips[i].Right) / tW, ((float)mClips[i].Top) / tH);
//Bottom right
vertexData[spriteIndices[2]] = new VertexData(vRight, vBottom, ((float)mClips[i].Right) / tW, ((float)mClips[i].Bottom) / tH);
//Bottom left
vertexData[spriteIndices[3]] = new VertexData(vLeft, vBottom, ((float)mClips[i].Left) / tW, ((float)mClips[i].Bottom) / tH);
//Bind sprite index buffer data
GL.BindBuffer(BufferTarget.ElementArrayBuffer, mIndexBuffers[ i ] );
GL.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)(4 * sizeof(int)), spriteIndices, BufferUsageHint.StaticDraw);
}
//Bind vertex data
GL.BindBuffer(BufferTarget.ArrayBuffer, mVertexDataBuffer );
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(totalSprites * 4 * VertexData.SizeInBytes), vertexData, BufferUsageHint.StaticDraw);
} else {
if( TextureID == 0 ) {
throw new Exception( "No texture to render with!" );
}
if( mClips.Count <= 0 ) {
throw new Exception( "No clips to generate vertex data from!" );
}
}
}
public virtual void GenerateDataBuffer(int tileWidth, int tileHeight)
{
//If there is a texture loaded and clips to make vertex data from
int maxX = ImageWidth / tileWidth;
int maxY = ImageHeight / tileHeight;
if (TextureID != 0 && maxX > 0 && maxY > 0)
{
MaxX = maxX;
MaxY = maxY;
TileWidth = tileWidth;
TileHeight = tileHeight;
//Allocate vertex buffer data
int totalSprites = MaxX * MaxY;
VertexData[] vertexData = new VertexData[4 * totalSprites];
mIndexBuffers = new int[totalSprites];
//Allocate vertex data buffer name
GL.GenBuffers(1, out mVertexDataBuffer);
//Allocate index buffers names
GL.GenBuffers(totalSprites, mIndexBuffers);
//Go through clips
float tW = ImageWidth;
float tH = ImageHeight;
int[] spriteIndices = new int[4] {
0, 0, 0, 0
};
//Origin variables
float vTop = 0;
float vBottom = TileHeight;
float vLeft = 0;
float vRight = TileWidth;
for (int y = 0; y < MaxY; y++)
{
for (int x = 0; x < MaxX; x++)
{
//Initialize indices
spriteIndices[0] = 4 * (y * MaxX + x);
spriteIndices[1] = 4 * (y * MaxX + x) + 1;
spriteIndices[2] = 4 * (y * MaxX + x) + 2;
spriteIndices[3] = 4 * (y * MaxX + x) + 3;
float clipTop = y * TileHeight;
float clipBottom = (y + 1) * TileHeight;
float clipLeft = x * TileWidth;
float clipRight = (x + 1) * TileWidth;
//Top left
vertexData[spriteIndices[0]] = new VertexData(vLeft, vTop, clipLeft / tW, clipTop / tH);
//Top right
vertexData[spriteIndices[1]] = new VertexData(vRight, vTop, clipRight / tW, clipTop / tH);
//Bottom right
vertexData[spriteIndices[2]] = new VertexData(vRight, vBottom, clipRight / tW, clipBottom / tH);
//Bottom left
vertexData[spriteIndices[3]] = new VertexData(vLeft, vBottom, clipLeft / tW, clipBottom / tH);
//Bind sprite index buffer data
GL.BindBuffer(BufferTarget.ElementArrayBuffer, mIndexBuffers[y * MaxX + x]);
GL.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)(4 * sizeof(int)), spriteIndices, BufferUsageHint.StaticDraw);
}
}
//Bind vertex data
GL.BindBuffer(BufferTarget.ArrayBuffer, mVertexDataBuffer);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(totalSprites * 4 * VertexData.SizeInBytes), vertexData, BufferUsageHint.StaticDraw);
}
else
{
if (TextureID == 0)
{
throw new Exception("No texture to render with!");
}
if (!(maxX > 0 && maxY > 0))
{
throw new Exception("No tile possible!");
}
}
}
public void Render(Rectangle?rect)
{
if (mTextureID != 0)
{
//Texture coordinates
float texTop = 0;
float texBottom = 1;
float texLeft = 0;
float texRight = 1;
//Vertex coordinates
float quadWidth = ImageWidth;
float quadHeight = ImageHeight;
//Handle clipping
if (rect != null)
{
Rectangle clip = rect.Value;
//Texture coordinates
texLeft = (float)clip.Left / ImageWidth;
texRight = (float)clip.Right / ImageWidth;
texTop = (float)clip.Top / ImageHeight;
texBottom = (float)clip.Bottom / ImageHeight;
//Vertex coordinates
quadWidth = (float)clip.Width;
quadHeight = (float)clip.Height;
}
//Set vertex data
VertexData[] vData = new VertexData[4] {
new VertexData(0, 0, texLeft, texTop),
new VertexData(quadWidth, 0, texRight, texTop),
new VertexData(quadWidth, quadHeight, texRight, texBottom),
new VertexData(0, quadHeight, texLeft, texBottom)
};
//Set texture ID
GL.BindTexture(TextureTarget.Texture2D, mTextureID);
//Enable vertex and texture coordinate arrays
mTextureProgram.EnableVertexPointer();
mTextureProgram.EnableTexCoordPointer();
//Bind vertex buffer
GL.BindBuffer(BufferTarget.ArrayBuffer, mVBOID);
//Update vertex buffer data
GL.BufferSubData(BufferTarget.ArrayBuffer, IntPtr.Zero, (IntPtr)(4 * VertexData.SizeInBytes), vData);
//Set texture coordinate data
mTextureProgram.SetTexCoordPointer(VertexData.SizeInBytes, VertexData.TexCoordOffset);
//Set vertex data
mTextureProgram.SetVertexPointer(VertexData.SizeInBytes, VertexData.PositionOffset);
//bind indexes again
GL.BindBuffer(BufferTarget.ElementArrayBuffer, mIBOID);
//Draw quad using vertex data and index data
GL.DrawElements(BeginMode.Quads, 4, DrawElementsType.UnsignedInt, 0);
//Disable vertex and texture coordinate arrays
mTextureProgram.DisableVertexPointer();
mTextureProgram.DisableTexCoordPointer();
}
}
private void initVBO()
{
//If texture is loaded and VBO does not already exist
if( mTextureID != 0 && mVBOID == 0 ) {
//Vertex data
VertexData[] vData = new VertexData[4];
//LVertexData2D vData[ 4 ];
//Set rendering indices
int[] iData = new int[ 4 ] { 0, 1, 2, 3 };
//Create VBO
GL.GenBuffers( 1, out mVBOID );
GL.BindBuffer(BufferTarget.ArrayBuffer, mVBOID );
//send vertex buffer data to GPU; data in this address space can be changed
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(4 * VertexData.SizeInBytes), vData, BufferUsageHint.DynamicDraw);
//Create IBO
GL.GenBuffers( 1, out mIBOID );
GL.BindBuffer(BufferTarget.ElementArrayBuffer, mIBOID );
//send index buffer data to GPU; data in this address space can be changed
GL.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)(4 * sizeof(int)), iData, BufferUsageHint.DynamicDraw);
//Unbind buffers
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
GL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
}
}
public void Render(Rectangle ? rect)
{
if( mTextureID != 0 ) {
//Texture coordinates
float texTop = 0;
float texBottom = 1;
float texLeft = 0;
float texRight = 1;
//Vertex coordinates
float quadWidth = ImageWidth;
float quadHeight = ImageHeight;
//Handle clipping
if( rect != null ) {
Rectangle clip = rect.Value;
//Texture coordinates
texLeft = (float)clip.Left / ImageWidth;
texRight = (float)clip.Right / ImageWidth;
texTop = (float)clip.Top / ImageHeight;
texBottom = (float)clip.Bottom / ImageHeight;
//Vertex coordinates
quadWidth = (float)clip.Width;
quadHeight = (float)clip.Height;
}
//Set vertex data
VertexData[] vData = new VertexData[4] {
new VertexData(0,0,texLeft,texTop),
new VertexData(quadWidth,0,texRight,texTop),
new VertexData(quadWidth,quadHeight,texRight,texBottom),
new VertexData(0,quadHeight,texLeft,texBottom)
};
//Set texture ID
GL.BindTexture(TextureTarget.Texture2D, mTextureID );
//Enable vertex and texture coordinate arrays
mTextureProgram.EnableVertexPointer();
mTextureProgram.EnableTexCoordPointer();
//Bind vertex buffer
GL.BindBuffer(BufferTarget.ArrayBuffer, mVBOID );
//Update vertex buffer data
GL.BufferSubData(BufferTarget.ArrayBuffer, IntPtr.Zero, (IntPtr)(4 * VertexData.SizeInBytes), vData);
//Set texture coordinate data
mTextureProgram.SetTexCoordPointer(VertexData.SizeInBytes, VertexData.TexCoordOffset);
//Set vertex data
mTextureProgram.SetVertexPointer(VertexData.SizeInBytes, VertexData.PositionOffset);
//bind indexes again
GL.BindBuffer(BufferTarget.ElementArrayBuffer, mIBOID );
//Draw quad using vertex data and index data
GL.DrawElements(BeginMode.Quads, 4, DrawElementsType.UnsignedInt, 0 );
//Disable vertex and texture coordinate arrays
mTextureProgram.DisableVertexPointer();
mTextureProgram.DisableTexCoordPointer();
}
}
public virtual void GenerateDataBuffer(int tileWidth, int tileHeight)
{
//If there is a texture loaded and clips to make vertex data from
int maxX = ImageWidth / tileWidth;
int maxY = ImageHeight / tileHeight;
if( TextureID != 0 && maxX > 0 && maxY > 0) {
MaxX = maxX;
MaxY = maxY;
TileWidth = tileWidth;
TileHeight = tileHeight;
//Allocate vertex buffer data
int totalSprites = MaxX * MaxY;
VertexData[] vertexData = new VertexData[ 4*totalSprites ];
mIndexBuffers = new int[ totalSprites ];
//Allocate vertex data buffer name
GL.GenBuffers( 1, out mVertexDataBuffer );
//Allocate index buffers names
GL.GenBuffers( totalSprites, mIndexBuffers );
//Go through clips
float tW = ImageWidth;
float tH = ImageHeight;
int[] spriteIndices = new int[ 4 ] { 0, 0, 0, 0 };
//Origin variables
float vTop = 0;
float vBottom = TileHeight;
float vLeft = 0;
float vRight = TileWidth;
for (int y = 0; y < MaxY; y++) {
for (int x = 0; x < MaxX; x++) {
//Initialize indices
spriteIndices[0] = 4 * (y * MaxX + x);
spriteIndices[1] = 4 * (y * MaxX + x) + 1;
spriteIndices[2] = 4 * (y * MaxX + x) + 2;
spriteIndices[3] = 4 * (y * MaxX + x) + 3;
float clipTop = y * TileHeight;
float clipBottom = (y+1) * TileHeight;
float clipLeft = x * TileWidth;
float clipRight = (x+1) * TileWidth;
//Top left
vertexData[spriteIndices[0]] = new VertexData(vLeft, vTop, clipLeft / tW, clipTop / tH);
//Top right
vertexData[spriteIndices[1]] = new VertexData(vRight, vTop, clipRight / tW, clipTop / tH);
//Bottom right
vertexData[spriteIndices[2]] = new VertexData(vRight, vBottom, clipRight / tW, clipBottom / tH);
//Bottom left
vertexData[spriteIndices[3]] = new VertexData(vLeft, vBottom, clipLeft / tW, clipBottom / tH);
//Bind sprite index buffer data
GL.BindBuffer(BufferTarget.ElementArrayBuffer, mIndexBuffers[y*MaxX+x]);
GL.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)(4 * sizeof(int)), spriteIndices, BufferUsageHint.StaticDraw);
}
}
//Bind vertex data
GL.BindBuffer(BufferTarget.ArrayBuffer, mVertexDataBuffer );
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(totalSprites * 4 * VertexData.SizeInBytes), vertexData, BufferUsageHint.StaticDraw);
} else {
if( TextureID == 0 ) {
throw new Exception( "No texture to render with!" );
}
if (!(maxX > 0 && maxY > 0)) {
throw new Exception( "No tile possible!" );
}
}
}