X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=gl.c;h=c5c505066dc498ed7381677843bc3f4458540a5c;hb=HEAD;hp=0e18c45850de322c27b0aadc98124b0c4da14880;hpb=c668921a45b7a7f5f548d0e09836f143f56b4ae0;p=libpicofe.git

diff --git a/gl.c b/gl.c
index 0e18c45..c5c5050 100644
--- a/gl.c
+++ b/gl.c
@@ -10,10 +10,16 @@ static EGLDisplay edpy;
 static EGLSurface esfc;
 static EGLContext ectxt;
 
+static GLuint texture_name;
+
 /* for external flips */
 void *gl_es_display;
 void *gl_es_surface;
 
+static int tex_w, tex_h;
+static void *tex_mem;
+static int flip_old_w, flip_old_h;
+
 static int gl_have_error(const char *name)
 {
 	GLenum e = glGetError();
@@ -34,11 +40,9 @@ static int gles_have_error(const char *name)
 	return 0;
 }
 
-int gl_init(void *display, void *window, int *quirks)
+int gl_init(void *display, void *window, int *quirks, int w, int h)
 {
 	EGLConfig ecfg = NULL;
-	GLuint texture_name = 0;
-	void *tmp_texture_mem = NULL;
 	EGLint num_config;
 	int retval = -1;
 	int ret;
@@ -53,8 +57,13 @@ int gl_init(void *display, void *window, int *quirks)
 		goto out;
 	}
 
-	tmp_texture_mem = calloc(1, 1024 * 512 * 2);
-	if (tmp_texture_mem == NULL) {
+	flip_old_w = flip_old_h = 0;
+	for (tex_w = 1; tex_w < w; tex_w *= 2)
+		;
+	for (tex_h = 1; tex_h < h; tex_h *= 2)
+		;
+	tex_mem = realloc(tex_mem, tex_w * tex_h * 2);
+	if (tex_mem == NULL) {
 		fprintf(stderr, "OOM\n");
 		goto out;
 	}
@@ -99,12 +108,15 @@ int gl_init(void *display, void *window, int *quirks)
 
 	glEnable(GL_TEXTURE_2D);
 
+	if (texture_name)
+		glDeleteTextures(1, &texture_name);
+
 	glGenTextures(1, &texture_name);
 
 	glBindTexture(GL_TEXTURE_2D, texture_name);
 
-	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1024, 512, 0, GL_RGB,
-		GL_UNSIGNED_SHORT_5_6_5, tmp_texture_mem);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, tex_w, tex_h, 0, GL_RGB,
+		GL_UNSIGNED_SHORT_5_6_5, tex_mem);
 	if (gl_have_error("glTexImage2D"))
 		goto out;
 
@@ -127,7 +139,6 @@ int gl_init(void *display, void *window, int *quirks)
 	gl_es_surface = (void *)esfc;
 	retval = 0;
 out:
-	free(tmp_texture_mem);
 	return retval;
 }
 
@@ -152,18 +163,16 @@ static float texture[] = {
 
 int gl_flip(const void *fb, int w, int h)
 {
-	static int old_w, old_h;
-
 	if (fb != NULL) {
-		if (w != old_w || h != old_h) {
-			float f_w = (float)w / 1024.0f;
-			float f_h = (float)h / 512.0f;
+		if (w != flip_old_w || h != flip_old_h) {
+			float f_w = (float)w / tex_w;
+			float f_h = (float)h / tex_h;
 			texture[1*2 + 0] = f_w;
 			texture[2*2 + 1] = f_h;
 			texture[3*2 + 0] = f_w;
 			texture[3*2 + 1] = f_h;
-			old_w = w;
-			old_h = h;
+			flip_old_w = w;
+			flip_old_h = h;
 		}
 
 		glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h,
@@ -199,5 +208,8 @@ void gl_finish(void)
 	gl_es_display = (void *)edpy;
 	gl_es_surface = (void *)esfc;
 
+	if (tex_mem) free(tex_mem);
+	tex_mem = NULL;
+
 	gl_platform_finish();
 }