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#include "sceneShader.h"
#include <array>
#include <gfx/gl/shaders/fs-landmass.h>
#include <gfx/gl/shaders/fs-material.h>
#include <gfx/gl/shaders/fs-pointLight.h>
#include <gfx/gl/shaders/fs-spotLight.h>
#include <gfx/gl/shaders/fs-water.h>
#include <gfx/gl/shaders/gs-pointLight.h>
#include <gfx/gl/shaders/gs-spotLight.h>
#include <gfx/gl/shaders/vs-dynamicPoint.h>
#include <gfx/gl/shaders/vs-dynamicPointInst.h>
#include <gfx/gl/shaders/vs-fixedPoint.h>
#include <gfx/gl/shaders/vs-pointLight.h>
#include <gfx/gl/shaders/vs-spotLight.h>
#include <gfx/gl/shaders/vs-water.h>
#include <gfx/gl/vertexArrayObject.h>
#include <glm/gtc/type_ptr.hpp>
#include <glm/gtx/transform.hpp>
#include <location.h>
#include <maths.h>
SceneShader::SceneShader() :
basicInst {dynamicPointInst_vs, material_fs}, landmass {fixedPoint_vs, landmass_fs},
absolute {fixedPoint_vs, material_fs}
{
}
void
SceneShader::setViewProjection(const Position3D & viewPoint, const glm::mat4 & viewProjection) const
{
for (const auto & prog : std::array<const SceneProgram *, 7> {
&basic, &basicInst, &water, &landmass, &absolute, &pointLight, &spotLight}) {
prog->setViewProjection(viewPoint, viewProjection);
}
}
void
SceneShader::setViewPort(const ViewPort & viewPort) const
{
for (const auto & prog : std::array<const SceneProgram *, 7> {
&basic, &basicInst, &water, &landmass, &absolute, &pointLight, &spotLight}) {
prog->setViewPort(viewPort);
}
}
void
SceneShader::SceneProgram::setViewProjection(const Position3D & viewPoint, const glm::mat4 & viewProjection) const
{
glUseProgram(*this);
glUniformMatrix4fv(viewProjectionLoc, 1, GL_FALSE, glm::value_ptr(viewProjection));
glUniform3fv(viewPointLoc, 1, glm::value_ptr(viewPoint));
}
void
SceneShader::SceneProgram::setViewPort(const ViewPort & viewPort) const
{
if (viewPortLoc >= 0) {
glUseProgram(*this);
glUniform4iv(viewPortLoc, 1, glm::value_ptr(viewPort));
}
}
SceneShader::BasicProgram::BasicProgram() : SceneProgram {dynamicPoint_vs, material_fs}, modelLoc {*this, "model"} { }
void
SceneShader::BasicProgram::setModel(Location const & location) const
{
const auto model {glm::translate(location.pos) * rotate_ypr(location.rot)};
glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
}
void
SceneShader::BasicProgram::use(Location const & location) const
{
Program::use();
setModel(location);
}
SceneShader::WaterProgram::WaterProgram() : SceneProgram {water_vs, water_fs}, waveLoc {*this, "waves"} { }
void
SceneShader::WaterProgram::use(float waveCycle) const
{
Program::use();
Position3D waves {waveCycle, 0.F, 0.F};
glUniform3fv(waveLoc, 1, glm::value_ptr(waves));
}
SceneShader::PointLightShader::PointLightShader() :
SceneProgram {pointLight_vs, pointLight_gs, pointLight_fs}, colourLoc {*this, "colour"}, kqLoc {*this, "kq"},
viewPointLoc {*this, "viewPoint"}
{
VertexArrayObject {va}.addAttribs<Position3D>(b);
}
void
SceneShader::PointLightShader::add(const Position3D & position, const RGB & colour, const float kq) const
{
Program::use();
glBindVertexArray(va);
glBindBuffer(GL_ARRAY_BUFFER, b);
glUniform3fv(colourLoc, 1, glm::value_ptr(colour));
glUniform1f(kqLoc, kq);
glBufferData(GL_ARRAY_BUFFER, sizeof(Position3D), glm::value_ptr(position), GL_DYNAMIC_DRAW);
glDrawArrays(GL_POINTS, 0, 1);
}
SceneShader::SpotLightShader::SpotLightShader() :
SceneProgram {spotLight_vs, spotLight_gs, spotLight_fs}, directionLoc {*this, "v_direction"},
colourLoc {*this, "colour"}, kqLoc {*this, "kq"}, arcLoc {*this, "arc"}, viewPointLoc {*this, "viewPoint"}
{
using v3pair = std::pair<Position3D, Direction3D>;
VertexArrayObject {va}.addAttribs<v3pair, &v3pair::first, &v3pair::second>(b);
}
void
SceneShader::SpotLightShader::add(const Position3D & position, const Direction3D & direction, const RGB & colour,
const float kq, const float arc) const
{
Program::use();
glBindVertexArray(va);
glBindBuffer(GL_ARRAY_BUFFER, b);
glUniform3fv(colourLoc, 1, glm::value_ptr(colour));
glUniform3fv(directionLoc, 1, glm::value_ptr(direction));
glUniform1f(kqLoc, kq);
glUniform1f(arcLoc, arc);
glBufferData(GL_ARRAY_BUFFER, sizeof(Position3D), glm::value_ptr(position), GL_DYNAMIC_DRAW);
glDrawArrays(GL_POINTS, 0, 1);
}
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