anki-3d-engine/AnKi/Shaders/Ui.ankiprog

// Copyright (C) 2009-present, Panagiotis Christopoulos Charitos and contributors.
// All rights reserved.
// Code licensed under the BSD License.
// http://www.anki3d.org/LICENSE

#pragma anki mutator TEXTURE_TYPE 0 1 // 0: no tex, 1: rgba tex

#pragma anki technique vert pixel

#include <AnKi/Shaders/Common.hlsl>

struct VertIn
{
	Vec2 m_position : POSITION;
	ANKI_RELAXED_PRECISION Vec4 m_color : COLOR;
#if TEXTURE_TYPE > 0
	Vec2 m_uv : TEXCOORD;
#endif
};

struct VertOut
{
#if TEXTURE_TYPE > 0
	Vec2 m_uv : TEXCOORD;
#endif
	ANKI_RELAXED_PRECISION Vec4 m_color : COLOR;
	Vec4 m_svPosition : SV_POSITION;
};

#if ANKI_VERTEX_SHADER

struct Constants
{
	Vec4 m_transform; // x: x scale, y: y scale, z: x transl, w: y transl
};
ANKI_FAST_CONSTANTS(Constants, g_consts)

VertOut main(VertIn input)
{
	VertOut output;

#	if TEXTURE_TYPE > 0
	output.m_uv = input.m_uv;
#	endif
	output.m_color = input.m_color;

	const Vec2 pos = g_consts.m_transform.xy * input.m_position + g_consts.m_transform.zw;
	output.m_svPosition = Vec4(pos, 0.0, 1.0);

	return output;
}
#endif // ANKI_VERTEX_SHADER

#if ANKI_PIXEL_SHADER
#	if TEXTURE_TYPE > 0
SamplerState g_trilinearRepeatSampler : register(s0);
Texture2D g_tex : register(t0);
#	endif

Vec4 main(VertOut input) : SV_TARGET0
{
#	if TEXTURE_TYPE == 0
	return input.m_color;
#	elif TEXTURE_TYPE == 1
	return input.m_color * g_tex.Sample(g_trilinearRepeatSampler, input.m_uv);
#	endif
}
#endif // ANKI_PIXEL_SHADER