Load the cube texture at startup.

2 files changed, 37 insertions, 0 deletions

diff --git a/src/main.cpp b/src/main.cpp
index b3378a7..666c300 100755
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -27,6 +27,7 @@
 
 #include "bezier.h"
 #include "patch_set.h"
+#include "texture_load.h"
 
 #define BUFFER_OFFSET(i) ((char *)NULL + (i))
 #define ELEMENTS_OF(x)  (sizeof(x) / sizeof(x[0]))
@@ -101,6 +102,9 @@ static GLuint prog;
 static GLint mvp_location;
 static GLint mv_location;
 static GLint s_location;
+static GLint sampler_location;
+
+static GLuint cubemap;
 
 static patch_set_info *object = NULL;
 
@@ -137,6 +141,7 @@ Redisplay(const patch_set_info *info)
 		glUniform1f(s_location, specular_exponent[i]);
 		glUniformMatrix4fv(mvp_location, 1, false, (float *) &mvp);
 		glUniformMatrix4fv(mv_location, 1, false, (float *) &mv);
+		glUniform1i(sampler_location, 0);
 
 		glMultiDrawElements(info->mode, info->count, info->type,
 				    (const GLvoid**) info->indices,
@@ -262,6 +267,7 @@ load_and_compile_program_code(const char *shader)
 			mvp_location = glGetUniformLocation(prog, "mvp");
 			mv_location = glGetUniformLocation(prog, "mv");
 			s_location = glGetUniformLocation(prog, "s");
+			sampler_location = glGetUniformLocation(prog, "sampler");
 		} else {
 			glDeleteProgram(prog);
 			prog = 0;
@@ -362,6 +368,14 @@ make_curves_C1(const bezier_curve &s0, const bezier_curve &s1,
 	d1 = bezier_curve(s1[0], moved_point, s1[2], s1[3]);
 }
 
+static void
+load_cube_face(GLenum side, const char *filename)
+{
+	if (!texture_image(side, 0, GL_RGB, filename, true)) {
+		printf("Failed to load cube texture `%s'\n", filename);
+		exit(1);
+	}
+}
 
 static void
 Init(void)
@@ -376,6 +390,27 @@ Init(void)
 		exit(1);
 	}
 
+	/* Load the cube map textures */
+	glGenTextures(1, &cubemap);
+	glBindTexture(GL_TEXTURE_CUBE_MAP, cubemap);
+
+	glTexParameteri(GL_TEXTURE_CUBE_MAP,
+			GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_CUBE_MAP,
+			GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_CUBE_MAP,
+			GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+	glTexParameteri(GL_TEXTURE_CUBE_MAP,
+			GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+	glEnable(GL_TEXTURE_CUBE_MAP);
+
+	load_cube_face(GL_TEXTURE_CUBE_MAP_POSITIVE_X_EXT, "map/posx.jpg");
+	load_cube_face(GL_TEXTURE_CUBE_MAP_POSITIVE_Y_EXT, "map/posy.jpg");
+	load_cube_face(GL_TEXTURE_CUBE_MAP_POSITIVE_Z_EXT, "map/posz.jpg");
+	load_cube_face(GL_TEXTURE_CUBE_MAP_NEGATIVE_X_EXT, "map/negx.jpg");
+	load_cube_face(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_EXT, "map/negy.jpg");
+	load_cube_face(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_EXT, "map/negz.jpg");
 
 	glEnable(GL_DEPTH_TEST);
 	glEnable(GL_CULL_FACE);
diff --git a/src/phong.frag b/src/phong.frag
index 0d53e85..a21f8fa 100755
--- a/src/phong.frag
+++ b/src/phong.frag
@@ -1,3 +1,5 @@
+uniform samplerCube sampler;
+
 varying vec3 light_ss;
 varying vec3 eye_ss;
 varying vec2 uv_coord;