dedicated shader for outlines

[blank.git] / src / graphics / shader.cpp

diff --git a/src/graphics/shader.cpp b/src/graphics/shader.cpp
index 938dc9772b1d4a5cd05fe4830846c897a78a77dd..f04b46f5f1eba30ca828d3fc6c92d4dbe5a73d94 100644 (file)
--- a/src/graphics/shader.cpp
+++ b/src/graphics/shader.cpp
@@ -1,6 +1,7 @@
 #include "BlendedSprite.hpp"
 #include "BlockLighting.hpp"
 #include "DirectionalLighting.hpp"
+#include "PlainColor.hpp"
 #include "Program.hpp"
 #include "Shader.hpp"
 
@@ -492,4 +493,69 @@ void BlendedSprite::SetBG(const glm::vec4 &v) noexcept {
        program.Uniform(bg_handle, v);
 }
 
+
+PlainColor::PlainColor()
+: program()
+, vp(1.0f)
+, mvp_handle(0) {
+       program.LoadShader(
+               GL_VERTEX_SHADER,
+               "#version 330 core\n"
+               "layout(location = 0) in vec3 vtx_position;\n"
+               "layout(location = 1) in vec3 vtx_color;\n"
+               "uniform mat4 MVP;\n"
+               "out vec3 frag_color;\n"
+               "void main() {\n"
+                       "gl_Position = MVP * vec4(vtx_position, 1);\n"
+                       "frag_color = vtx_color;\n"
+               "}\n"
+       );
+       program.LoadShader(
+               GL_FRAGMENT_SHADER,
+               "#version 330 core\n"
+               "in vec3 frag_color;\n"
+               "out vec3 color;\n"
+               "void main() {\n"
+                       "color = frag_color;\n"
+               "}\n"
+       );
+       program.Link();
+       if (!program.Linked()) {
+               program.Log(std::cerr);
+               throw std::runtime_error("link program");
+       }
+
+       mvp_handle = program.UniformLocation("MVP");
+}
+
+
+void PlainColor::Activate() noexcept {
+       program.Use();
+}
+
+void PlainColor::SetM(const glm::mat4 &m) noexcept {
+       program.Uniform(mvp_handle, vp * m);
+}
+
+void PlainColor::SetProjection(const glm::mat4 &p) noexcept {
+       projection = p;
+       vp = p * view;
+}
+
+void PlainColor::SetView(const glm::mat4 &v) noexcept {
+       view = v;
+       vp = projection * v;
+}
+
+void PlainColor::SetVP(const glm::mat4 &v, const glm::mat4 &p) noexcept {
+       projection = p;
+       view = v;
+       vp = p * v;
+}
+
+void PlainColor::SetMVP(const glm::mat4 &m, const glm::mat4 &v, const glm::mat4 &p) noexcept {
+       SetVP(v, p);
+       SetM(m);
+}
+
 }