test: add opengl test.

3 files changed, 123 insertions, 1 deletions

diff --git a/src/.gitignore b/src/.gitignore
index 8735953..65f9622 100644
--- a/src/.gitignore
+++ b/src/.gitignore
@@ -13,3 +13,4 @@ hash-test
 cache-test
 font-test
 sdl-test
+sdl-opengl-test
diff --git a/src/Makefile.am b/src/Makefile.am
index e58db11..e0a452e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -52,9 +52,12 @@ libsdl_freetype_opengl_la_CFLAGS = $(GL_CFLAGS) $(AM_CFLAGS)
 
 if HAVE_SDL
 sdl_test = sdl-test
+if HAVE_OPENGL
+sdl_opengl_test = sdl-opengl-test
+endif
 endif
 
-noinst_PROGRAMS = hash-test cache-test font-test $(sdl_test)
+noinst_PROGRAMS = hash-test cache-test font-test $(sdl_test) $(sdl_opengl_test)
 hash_test_SOURCES = hash-test.c
 hash_test_LDADD = libsdl-freetype.la 
 
@@ -67,6 +70,9 @@ font_test_LDADD = libsdl-ft.la
 sdl_test_SOURCES = sdl-test.c
 sdl_test_LDADD = libsdl-ft.la
 
+sdl_opengl_test_SOURCES = sdl-opengl-test.c
+sdl_opengl_test_LDADD = libsdl-freetype-opengl.la libsdl-ft.la 
+
 lib_LTLIBRARIES = 			\
 	libsdl-freetype.la 		\
 	$(libsdl_ft)			\
diff --git a/src/sdl-opengl-test.c b/src/sdl-opengl-test.c
new file mode 100644
index 0000000..b0d77c8
--- /dev/null
+++ b/src/sdl-opengl-test.c
@@ -0,0 +1,115 @@
+#include <SDL.h>
+#include <GL/gl.h>
+
+#include <sdl-freetype.h>
+#include <sdl-freetype-opengl.h>
+#include <sdl-ft.h>
+
+#include <stdio.h>
+
+#define TEXT "sdl freetype OpenGL render"
+
+int
+main(int argc, char *argv[])
+{
+    SDL_Surface * screen;
+    Uint8 video_bpp;
+    Uint32 videoflags;
+    int done;
+    SDL_Event event;
+    float alpha, step;
+    sdl_freetype_font_t * font;
+    sdl_freetype_glyph_render_t * render;
+    sdl_freetype_text_extents_t extents;
+
+    /* Initialize SDL */
+    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
+        fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
+        goto errquit0;
+    }
+
+    videoflags = SDL_HWSURFACE;
+    videoflags |= SDL_OPENGL;
+    video_bpp = 32;
+
+    /* Set 640x480 video mode */
+    screen = SDL_SetVideoMode(640, 480, video_bpp, videoflags);
+    if (!screen) {
+        fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n",
+                video_bpp, SDL_GetError());
+        goto errquit0;
+    }
+
+    font = sdl_ft_create_font ("sans", 20, 
+                               SDL_FT_WEIGHT_NORMAL, SDL_FT_SLANT_NORMAL, 96);
+    if (!font)
+        goto errquit0;
+
+    render = sdl_freetype_opengl_render_create ();
+    if (!render)
+        goto errquit1;
+    sdl_freetype_opengl_render_set_unit_scale (render, 1.0 / 320, 1.0 / 240);
+    sdl_freetype_font_set_render (font, render);
+
+    glEnable (GL_TEXTURE_2D);
+    glShadeModel (GL_SMOOTH);
+    glClearColor (0.8f, 0.8f, 0.8f, 0.0f);
+    glClearDepth (1.0f); 
+    glEnable (GL_DEPTH_TEST);
+    glDepthFunc (GL_LEQUAL);
+    glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
+
+    alpha = 1.0f;
+    step = -0.01;
+    /* Wait for a keystroke */
+    done = 0;
+    while (!done) {
+        /* Check for events */
+        while (SDL_PollEvent(&event)) {
+            switch (event.type) {
+            case SDL_MOUSEBUTTONDOWN:
+                break;
+            case SDL_KEYDOWN:
+            case SDL_QUIT:
+                done = 1;
+                break;
+            default:
+                break;
+            }
+        }
+
+        glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        glLoadIdentity ();
+
+        glEnable (GL_BLEND);
+        glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+        glScalef (alpha + 1.0, alpha + 1.0, 1.0);
+        glRotatef (alpha * 360, 1.0, 1.0, 0);
+        sdl_freetype_font_utf8_extents (font, &extents, TEXT, -1);
+        glTranslatef (-extents.width / (320.0 * 2), -extents.height / (240.0 * 2), 0);
+        sdl_freetype_font_show_utf8 (font, NULL, 255, 0, 0, alpha * 255,
+                                     0, 0, TEXT, -1);
+
+        SDL_GL_SwapBuffers();
+
+        alpha += step;
+        if (alpha < 0.0f) {
+            alpha = 0.0f;
+            step = -step;
+        } else if (alpha > 1.0f) {
+            alpha = 1.0f;
+            step = -step;
+        }
+
+        SDL_Delay(20);
+    }
+
+ errquit1:
+    sdl_freetype_font_destroy (font);
+    sdl_freetype_fini ();
+
+ errquit0:
+    SDL_Quit();
+    return 0;
+}