X-Git-Url: http://git.mutantstargoat.com?a=blobdiff_plain;f=src%2Frenderer.cc;h=e11b9737adc6018af1913a1e9d3cd743532f4e02;hb=d1a2cf93cf54898bb4ad442da94fc61f2617cf9f;hp=260c3cfab5b9aa3e6e72b0702df1651d2231ed75;hpb=77e44c5424bd5e6e7c6a706151fa786a56270e12;p=demo

diff --git a/src/renderer.cc b/src/renderer.cc
index 260c3cf..e11b973 100644
--- a/src/renderer.cc
+++ b/src/renderer.cc
@@ -1,9 +1,12 @@
 #include <GL/glew.h>
+#include <gmath/gmath.h>
 
 #include "global.h"
+#include "gfxapi.h"
 
 #include "camera.h"
 #include "mesh.h"
+#include "meshgen.h"
 #include "object.h"
 #include "renderer.h"
 #include "scene.h"
@@ -11,6 +14,12 @@
 #include "shader_manager.h"
 #include "texture.h"
 
+/* skybox */
+
+static Mesh *skymesh; /* it will be used by many renderers => no destroy */
+static ShaderProgram *skyprog;
+static int viewproj_loc;
+
 Renderer::Renderer()
 {
 	scene = 0;
@@ -31,10 +40,6 @@ bool Renderer::create()
 		return false;
 	}
 
-	if(!(sprog->link())) {
-		return false;
-	}
-
 	/* getting material uniform locations: diffuse, specular, specular exponent (strength) */
 
 	if((diff_loc = sprog->get_uniform_location("diffuse")) == -1) {
@@ -72,6 +77,10 @@ void Renderer::draw() const
 	if(!camera || !scene)
 		return;
 
+	if(skytex) {
+		draw_skybox();
+	}
+
 	if(!sprog->link())
 		return;
 
@@ -111,10 +120,41 @@ void Renderer::draw_object(Object *object) const
 
 void Renderer::set_sky_tex(Texture *stex)
 {
+	if(!skymesh) {
+		skymesh = gfx_create_mesh();
+		gen_geosphere(skymesh, 1, 0);
+	}
+	if(!skyprog) {
+		if(!(skyprog = sdr_man->create_shader_program("sky.v.glsl", "sky.f.glsl")))
+			return;
+		if((viewproj_loc = skyprog->get_uniform_location("mviewproj") == -1))
+			return;
+	}
 	skytex = stex;
 }
 
 void Renderer::set_diffuse_sky_tex(Texture *dstex)
 {
 	dskytex = dstex;
+}
+
+void Renderer::draw_skybox() const
+{
+	if(!skymesh || !skytex)
+		return;
+
+	gfx_zbuffer(false);
+	gfx_cull_face(GFX_CULL_NONE);
+
+	skytex->bind();
+	skyprog->use();
+
+	Mat4 mviewproj;
+	mviewproj = camera->get_view_matrix().upper3x3() * mprojection;
+	skyprog->set_uniform_matrix(viewproj_loc, mviewproj);
+
+	skymesh->draw();
+
+	gfx_cull_face(GFX_CULL_BACK);
+	gfx_zbuffer(true);
 }
\ No newline at end of file