Module: Mesa
Branch: master
Commit: 8b0b33530cfc6e623db1d9d97e6127e14cf065ee
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=8b0b33530cfc6e623db1d9d97e6127e14cf065ee
Author: Ian Romanick <ian.d.roman...@intel.com>
Date: Fri Aug 14 16:26:59 2009 -0700
demos/cubemap: Add support for GL_ARB_seamless_cube_map
---
progs/demos/cubemap.c | 54 ++++++++++++++++++++++++++++++++++--------------
1 files changed, 38 insertions(+), 16 deletions(-)
diff --git a/progs/demos/cubemap.c b/progs/demos/cubemap.c
index 1f9f290..0df5ff0 100644
--- a/progs/demos/cubemap.c
+++ b/progs/demos/cubemap.c
@@ -43,6 +43,9 @@
#include "GL/glut.h"
#include "readtex.h"
+#ifndef GL_TEXTURE_CUBE_MAP_SEAMLESS
+#define GL_TEXTURE_CUBE_MAP_SEAMLESS 0x884F
+#endif
static GLfloat Xrot = 0, Yrot = 0;
static GLfloat EyeDist = 10;
@@ -53,6 +56,8 @@ static GLint FrameParity = 0;
static GLenum FilterIndex = 0;
static GLint ClampIndex = 0;
static GLboolean supportFBO = GL_FALSE;
+static GLboolean supportSeamless = GL_FALSE;
+static GLboolean seamless = GL_FALSE;
static struct {
@@ -91,7 +96,9 @@ static struct {
-#define eps1 0.99
+/* The effects of GL_ARB_seamless_cube_map don't show up unless eps1 is 1.0.
+ */
+#define eps1 1.0 /*0.99*/
#define br 20.0 /* box radius */
static const GLfloat tex_coords[] = {
@@ -231,6 +238,13 @@ static void draw( void )
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MAG_FILTER,
FilterModes[FilterIndex].mag_mode);
+ if (supportSeamless) {
+ if (seamless) {
+ glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
+ } else {
+ glDisable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
+ }
+ }
wrap = ClampModes[ClampIndex].mode;
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_S, wrap);
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_T, wrap);
@@ -321,6 +335,11 @@ static void key(unsigned char k, int x, int y)
mode = !mode;
set_mode(mode);
break;
+ case 's':
+ seamless = ! seamless;
+ printf("Seamless cube map filtering is %sabled\n",
+ (seamless) ? "en" : "dis" );
+ break;
case 'v':
use_vertex_arrays = ! use_vertex_arrays;
printf( "Vertex arrays are %sabled\n",
@@ -502,23 +521,26 @@ static void load_envmaps(void)
static void init( GLboolean useImageFiles )
{
/* check for extensions */
- {
- char *exten = (char *) glGetString(GL_EXTENSIONS);
- if (!strstr(exten, "GL_ARB_texture_cube_map")) {
- printf("Sorry, this demo requires GL_ARB_texture_cube_map\n");
- exit(0);
- }
+ if (!GLEW_ARB_texture_cube_map) {
+ printf("Sorry, this demo requires GL_ARB_texture_cube_map\n");
+ exit(0);
+ }
- /* Needed for glGenerateMipmapEXT / auto mipmapping
- */
- if (strstr(exten, "GL_EXT_framebuffer_object")) {
- supportFBO = GL_TRUE;
- }
- else if (!strstr(exten, "GL_SGIS_generate_mipmap")) {
- printf("Sorry, this demo requires GL_EXT_framebuffer_object or
GL_SGIS_generate_mipmap\n");
- exit(0);
- }
+ /* Needed for glGenerateMipmapEXT / auto mipmapping
+ */
+ supportFBO = GLEW_EXT_framebuffer_object;
+
+ if (!supportFBO && !GLEW_SGIS_generate_mipmap) {
+ printf("Sorry, this demo requires GL_EXT_framebuffer_object or "
+ "GL_SGIS_generate_mipmap\n");
+ exit(0);
}
+
+ /* GLEW doesn't know about this extension yet, so use the old GLUT function
+ * to check for availability.
+ */
+ supportSeamless = glutExtensionSupported("GL_ARB_seamless_cube_map");
+
printf("GL_RENDERER: %s\n", (char *) glGetString(GL_RENDERER));
if (useImageFiles) {
_______________________________________________
mesa-commit mailing list
mesa-commit@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-commit
