Method SubmitSprites

trinity/Font/Tr2FontMeasurer.cpp:1045–1123

}

void Tr2FontMeasurer::SubmitSprites( Tr2Sprite2dScene* renderer )
{
	if( !m_vertices || !m_indices )
	{
		// It's possible this measurer holds an empty string
		return;
	}

	if( m_indexCount == 0 )
	{
		// This could happen if the measurer only holds spaces
		return;
	}

	// We may need to submit the vertices in batches as there is a limit to the
	// vertex buffer size in the sprite renderer. When it is capturing we have
	// counted the vertices beforehand so we don't need to break up the draw calls.
	unsigned int maxSpriteCount;

	if( renderer->IsCapturing() )
	{
		maxSpriteCount = std::numeric_limits<uint32_t>::max();
	}
	else
	{
		maxSpriteCount = renderer->GetMaxVertexCountPerDrawCall() / 4;
	}

	Tr2Sprite2dD3DVertex* vertices;
	unsigned int vertexCount;
	unsigned short* indices;
	unsigned int indexCount;
	unsigned int vertexOffset = 0;

	for( auto it = m_drawCalls.begin(); it != m_drawCalls.end(); ++it )
	{
		auto entry = *it;
		renderer->SetTexture( 0, entry.texture, S2D_TS_NONE );

		unsigned int startSprite = entry.startSprite;
		unsigned int spriteCount = entry.spriteCount;
		unsigned short* adjustedIndices = nullptr;

		if( spriteCount > maxSpriteCount )
		{
			adjustedIndices = CCP_NEW( "adjustedIndices" ) unsigned short[maxSpriteCount * 6];
		}

		// Ensure we don't submit too many vertices at once
		while( spriteCount > maxSpriteCount )
		{
			vertices = &m_vertices[startSprite * 4];
			vertexCount = maxSpriteCount * 4;

			indexCount = maxSpriteCount * 6;
			indices = AdjustIndicesIfNeeded( startSprite, adjustedIndices, indexCount, vertexOffset );

			renderer->RenderTriangleVerts( vertices, vertexCount, indices, indexCount );