From f848ad0e672d913c36fcb86533cbc11a9cf9d9ea Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Thu, 3 Nov 2022 18:25:28 +0000
Subject: Rename Shader to SceneShader

---
 gfx/gl/sceneShader.cpp | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 gfx/gl/sceneShader.cpp

(limited to 'gfx/gl/sceneShader.cpp')

diff --git a/gfx/gl/sceneShader.cpp b/gfx/gl/sceneShader.cpp
new file mode 100644
index 0000000..48c0f42
--- /dev/null
+++ b/gfx/gl/sceneShader.cpp
@@ -0,0 +1,77 @@
+#include "sceneShader.h"
+#include "gfx/gl/glSource.h"
+#include <array>
+#include <cstddef>
+#include <gfx/gl/programHandle.h>
+#include <gfx/gl/shaders/fs-basicShader.h>
+#include <gfx/gl/shaders/fs-landmassShader.h>
+#include <gfx/gl/shaders/fs-waterShader.h>
+#include <gfx/gl/shaders/vs-basicShader.h>
+#include <gfx/gl/shaders/vs-landmassShader.h>
+#include <gfx/gl/shaders/vs-waterShader.h>
+#include <glm/glm.hpp>
+#include <glm/gtc/type_ptr.hpp>
+#include <glm/gtx/transform.hpp>
+#include <location.hpp>
+#include <maths.h>
+
+SceneShader::ProgramHandle::ProgramHandle(GLuint vs, GLuint fs) : ProgramHandleBase {vs, fs}
+{
+	glBindAttribLocation(m_program, 0, "position");
+	glBindAttribLocation(m_program, 1, "texCoord");
+	glBindAttribLocation(m_program, 2, "normal");
+
+	viewProjection_uniform = glGetUniformLocation(m_program, "viewProjection");
+	model_uniform = glGetUniformLocation(m_program, "model");
+}
+
+SceneShader::SceneShader() :
+	programs {{{
+					   basicShader_vs.compile(),
+					   basicShader_fs.compile(),
+			   },
+			{
+					waterShader_vs.compile(),
+					waterShader_fs.compile(),
+			},
+			{
+					landmassShader_vs.compile(),
+					landmassShader_fs.compile(),
+			},
+			{
+					landmassShader_vs.compile(),
+					basicShader_fs.compile(),
+			}}}
+{
+}
+
+void
+SceneShader::setView(glm::mat4 proj) const
+{
+	for (const auto & prog : programs) {
+		glUseProgram(prog.m_program);
+		glUniformMatrix4fv(prog.viewProjection_uniform, 1, GL_FALSE, glm::value_ptr(proj));
+	}
+}
+
+void
+SceneShader::setUniform(const GLchar * uniform, glm::vec3 v) const
+{
+	for (const auto & prog : programs) {
+		if (auto loc = glGetUniformLocation(prog.m_program, uniform); loc >= 0) {
+			glUseProgram(prog.m_program);
+			glUniform3fv(loc, 1, glm::value_ptr(v));
+		}
+	}
+}
+
+void
+SceneShader::setModel(const Location & loc, Program pid) const
+{
+	auto & prog = programs[static_cast<std::size_t>(pid)];
+	glUseProgram(prog.m_program);
+	if (prog.model_uniform >= 0) {
+		const auto model {glm::translate(loc.pos) * rotate_ypr(loc.rot)};
+		glUniformMatrix4fv(prog.model_uniform, 1, GL_FALSE, glm::value_ptr(model));
+	}
+}
-- 
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