X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=libpicofe.git;a=blobdiff_plain;f=gl.c;h=2ebb87c7077187561119db2069c90c74c6b1fed2;hp=44e0dd50e9001c4043a918b62493c183f4f16cc6;hb=HEAD;hpb=0d645bc539fdc073f20c4dea9f4a4e218cebec0e

diff --git a/gl.c b/gl.c
index 44e0dd5..c5c5050 100644
--- a/gl.c
+++ b/gl.c
@@ -10,6 +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();
@@ -30,11 +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;
@@ -49,8 +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;
 	}
@@ -95,12 +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;
 
@@ -119,12 +135,18 @@ int gl_init(void *display, void *window, int *quirks)
 	if (gl_have_error("init"))
 		goto out;
 
+	gl_es_display = (void *)edpy;
+	gl_es_surface = (void *)esfc;
 	retval = 0;
 out:
-	free(tmp_texture_mem);
 	return retval;
 }
 
+void gl_announce(void)
+{
+	printf("GL_RENDERER: %s\n", (char *)glGetString(GL_RENDERER));
+}
+
 static float vertices[] = {
 	-1.0f,  1.0f,  0.0f, // 0    0  1
 	 1.0f,  1.0f,  0.0f, // 1  ^
@@ -141,18 +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,
@@ -185,5 +205,11 @@ void gl_finish(void)
 	eglTerminate(edpy);
 	edpy = EGL_NO_DISPLAY;
 
+	gl_es_display = (void *)edpy;
+	gl_es_surface = (void *)esfc;
+
+	if (tex_mem) free(tex_mem);
+	tex_mem = NULL;
+
 	gl_platform_finish();
 }