PostProcessRenderer::PostProcessRenderer(GraphicsContext& graphicsContext)
: _graphicsContext(graphicsContext), _quadVertexBuffer(graphicsContext.CreateVertexBuffer(BufferType::Static))
{
static const VertexPositionTexture quadVertices[6]
{
VertexPositionTexture(Vector3f(-1, 1, 0), Vector2f::UnitY),
VertexPositionTexture(Vector3f(-1, -1, 0), Vector2f::Zero),
VertexPositionTexture(Vector3f(1, -1, 0), Vector2f::UnitX),
VertexPositionTexture(Vector3f(-1, 1, 0), Vector2f::UnitY),
VertexPositionTexture(Vector3f(1, -1, 0), Vector2f::UnitX),
VertexPositionTexture(Vector3f(1, 1, 0), Vector2f::One),
};
_quadVertexBuffer->SetVertexData(quadVertices, Array::Length(quadVertices));
_currentRenderTarget = _graphicsContext.CreateRenderTarget(1920, 1080, DepthBufferFormat::Depth24Stencil8);
_backgroundRenderTarget = _graphicsContext.CreateRenderTarget(1920, 1080, DepthBufferFormat::Depth24Stencil8);
static const std::string VertexShader = R"XXX(
#version 330 core
layout(location = 0) in vec3 vertexPosition;
layout(location = 2) in vec2 vertexUV;
out vec2 fragmentUV;
void main(){
gl_Position = vec4(vertexPosition, 1);
fragmentUV = vertexUV;
})XXX";
static const std::string FragmentShader = R"XXX(
#version 330 core
in vec2 fragmentUV;
out vec4 color;
uniform sampler2D TextureSampler;
void main() {
color = texture2D(TextureSampler, fragmentUV);
})XXX";
