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vo_opengl: simplify some aspects of the GL function loader

This commit is contained in:
wm4 2014-12-18 21:06:17 +01:00
parent da997db095
commit 32fb3dae87
2 changed files with 23 additions and 26 deletions
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30
video/out/gl_common.c
View File

@ -104,11 +104,8 @@ struct feature {
};
static const struct feature features[] = {
{MPGL_CAP_GL, "Basic OpenGL"},
{MPGL_CAP_GL_LEGACY, "Legacy OpenGL"},
{MPGL_CAP_GL2, "OpenGL 2.0"},
{MPGL_CAP_GL21, "OpenGL 2.1"},
{MPGL_CAP_GL3, "OpenGL 3.0"},
{MPGL_CAP_GL21, "OpenGL 2.1+"},
{MPGL_CAP_FB, "Framebuffers"},
{MPGL_CAP_VAO, "VAOs"},
{MPGL_CAP_SRGB_TEX, "sRGB textures"},
@ -171,7 +168,6 @@ static const struct gl_functions gl_functions[] = {
// GL functions which are always available anywhere at least since 1.1
{
.ver_core = MPGL_VER(1, 1),
.provides = MPGL_CAP_GL,
.functions = (const struct gl_function[]) {
DEF_FN(Viewport),
DEF_FN(Clear),
@ -209,7 +205,6 @@ static const struct gl_functions gl_functions[] = {
// GL 2.0-3.x functions
{
.ver_core = MPGL_VER(2, 0),
.provides = MPGL_CAP_GL2,
.functions = (const struct gl_function[]) {
DEF_FN(GenBuffers),
DEF_FN(DeleteBuffers),
@ -262,7 +257,7 @@ static const struct gl_functions gl_functions[] = {
// GL 3.x core only functions.
{
.ver_core = MPGL_VER(3, 0),
.provides = MPGL_CAP_GL3 | MPGL_CAP_SRGB_TEX | MPGL_CAP_SRGB_FB,
.provides = MPGL_CAP_SRGB_TEX | MPGL_CAP_SRGB_FB,
.functions = (const struct gl_function[]) {
DEF_FN(GetStringi),
{0}
@ -490,17 +485,22 @@ void mpgl_load_functions2(GL *gl, void *(*get_fn)(void *ctx, const char *n),
const char *version = gl->GetString(GL_VERSION);
if (strncmp(version, "OpenGL ES ", 10) == 0) {
version += 10;
gl->es = true;
gl->es = 100;
}
sscanf(version, "%d.%d", &major, &minor);
gl->version = MPGL_VER(major, minor);
mp_verbose(log, "Detected OpenGL %d.%d (%s).\n", major, minor,
gl->es ? "GLES" : "desktop");
mp_verbose(log, "Detected %s %d.%d.\n", gl->es ? "GLES" : "desktop OpenGL",
major, minor);
if (gl->es && gl->version < MPGL_VER(3, 0)) {
mp_warn(log, "At least GLESv3 required.\n");
gl->version = 0;
return;
if (gl->es) {
gl->es = gl->version;
if (gl->version >= 300) {
gl->version = 300; // pretend it's desktop OpenGL 3.0
} else {
mp_warn(log, "At least GLESv3 required.\n");
gl->version = 0;
return;
}
}
mp_verbose(log, "GL_VENDOR='%s'\n", gl->GetString(GL_VENDOR));
@ -903,8 +903,6 @@ MPGLContext *mpgl_init(struct vo *vo, const char *backend_name,
if (!ctx)
return NULL;
gl_caps |= MPGL_CAP_GL;
ctx->requested_gl_version = (gl_caps & MPGL_CAP_GL_LEGACY)
? MPGL_VER(2, 1) : MPGL_VER(3, 0);

19
video/out/gl_common.h
View File

@ -68,11 +68,8 @@ void glCheckError(GL *gl, struct mp_log *log, const char *info);
mp_image_t *glGetWindowScreenshot(GL *gl);
enum {
MPGL_CAP_GL = (1 << 0), // GL was successfully loaded
MPGL_CAP_GL_LEGACY = (1 << 1), // GL 1.1 (but not 3.x)
MPGL_CAP_GL2 = (1 << 2), // GL 2.0 (3.x core subset)
MPGL_CAP_GL21 = (1 << 3), // GL 2.1 (3.x core subset)
MPGL_CAP_GL3 = (1 << 4), // GL 3.x core
MPGL_CAP_GL_LEGACY = (1 << 1), // GL 1.1 (excluding 3.x)
MPGL_CAP_GL21 = (1 << 3), // GL 2.1+ (excluding legacy)
MPGL_CAP_FB = (1 << 5),
MPGL_CAP_VAO = (1 << 6),
MPGL_CAP_SRGB_TEX = (1 << 7),
@ -84,9 +81,11 @@ enum {
MPGL_CAP_NO_SW = (1 << 30), // used to block sw. renderers
};
#define MPGL_VER(major, minor) (((major) << 16) | (minor))
#define MPGL_VER_GET_MAJOR(ver) ((ver) >> 16)
#define MPGL_VER_GET_MINOR(ver) ((ver) & ((1 << 16) - 1))
// E.g. 310 means 3.1
// Code doesn't have to use the macros; they are for convenience only.
#define MPGL_VER(major, minor) (((major) * 100) + (minor))
#define MPGL_VER_GET_MAJOR(ver) ((unsigned)(ver) / 100)
#define MPGL_VER_GET_MINOR(ver) ((unsigned)(ver) % 100)
#define MPGL_VER_P(ver) MPGL_VER_GET_MAJOR(ver), MPGL_VER_GET_MINOR(ver)
@ -170,8 +169,8 @@ void mp_log_source(struct mp_log *log, int lev, const char *src);
//function pointers loaded from the OpenGL library
struct GL {
bool es; // false: desktop GL, true: GLES
int version; // MPGL_VER() mangled
int version; // MPGL_VER() mangled (e.g. 210 for 2.1)
int es; // es version (e.g. 300), 0 for desktop GL
int glsl_version; // e.g. 130 for GLSL 1.30
char *extensions; // Equivalent to GL_EXTENSIONS
int mpgl_caps; // Bitfield of MPGL_CAP_* constants