Method PrepareTriangleVerts

trinity/Sprite2d/Tr2Sprite2dScene.cpp:925–998

}

bool Tr2Sprite2dScene::PrepareTriangleVerts( Tr2Sprite2dD3DVertex* destVerts, Tr2Sprite2dVertexBase* verts, unsigned int stride, unsigned int vertexCount )
{
	CCP_STATS_ZONE( __FUNCTION__ );

	if( !TexturesReady() )
	{
		CCP_STATS_INC( spriteSceneTextureNotReady );
		return false;
	}

	//
	// First gather all data we're setting or using to adjust vertices, then iterate over
	// all verts and set the data. It's very important that we only iterate once over
	// the vertices and update their fields in the right order for optimal cache behavior.
	//

	//
	// Process the vertices into the vertex buffer
	//

	Tr2Sprite2dVertexBase* curVertex = verts;
	for( unsigned int i = 0; i < vertexCount; ++i )
	{
		destVerts->position.x = curVertex->position.x;
		destVerts->position.y = curVertex->position.y;
		destVerts->position.z = curVertex->position.z;

		destVerts->color.r = curVertex->color.r * m_color.r;
		destVerts->color.g = curVertex->color.g * m_color.g;
		destVerts->color.b = curVertex->color.b * m_color.b;
		destVerts->color.a = curVertex->color.a * m_color.a;

		for( int ix = 0; ix < m_numTexturesUsed; ++ix )
		{
			TextureSetting& texSettings = m_textureSettings[ix];

			Vector2 dstUV;
			if( texSettings.useTransform )
			{
				// Apply texture transformation
				float x = curVertex->texCoord[ix].x;
				float y = curVertex->texCoord[ix].y;
				Vector4 uv( x, y, 0.0f, 1.0f );
				uv = Transform( uv, texSettings.transform );
				dstUV.x = uv.x * texSettings.textureWindow.z + texSettings.textureWindow.x;
				dstUV.y = uv.y * texSettings.textureWindow.w + texSettings.textureWindow.y;
			}
			else
			{
				dstUV.x = curVertex->texCoord[ix].x * texSettings.textureWindow.z + texSettings.textureWindow.x;
				dstUV.y = curVertex->texCoord[ix].y * texSettings.textureWindow.w + texSettings.textureWindow.y;
			}
			destVerts->texCoord[ix] = dstUV;
		}

		if( m_isAntiAliased )
		{
			destVerts->texCoord[0] = curVertex->texCoord[0];