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feat(texture): detects GL_EXT_texture_norm16

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This commit is contained in:
Swung0x48 2025-01-30 18:54:36 +08:00
parent b277eae348
commit 5dfbed53e3
1 changed files with 34 additions and 4 deletions
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38
src/main/cpp/gl/texture.c
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@ -29,6 +29,28 @@ int nlevel(int size, int level) {
return size;
}
static bool support_rgba16 = false;
static bool checked_rgba16 = false;
bool check_rgba16() {
LOAD_GLES(glGetStringi, const GLubyte *, GLenum, GLuint);
LOAD_GLES(glGetIntegerv, void, GLenum pname, GLint *params);
GLint numFormats = 0;
gles_glGetIntegerv(GL_NUM_EXTENSIONS, &numFormats);
for (int i = 0; i < numFormats; ++i) {
const GLubyte* extension = gles_glGetStringi(GL_EXTENSIONS, i);
if (strcmp((const char*)extension, "GL_EXT_texture_norm16") == 0) {
printf("supports GL_EXT_texture_norm16\n");
return true;
}
}
printf("does not support GL_EXT_texture_norm16\n");
return false;
}
void internal_convert(GLenum* internal_format, GLenum* type) {
switch (*internal_format) {
case GL_DEPTH_COMPONENT:
@ -92,11 +114,19 @@ void internal_convert(GLenum* internal_format, GLenum* type) {
*type = GL_INT;
break;
case GL_RGBA16:
*internal_format = GL_RGBA16F;
*type = GL_FLOAT;
case GL_RGBA16: {
if (!checked_rgba16) {
support_rgba16 = check_rgba16();
checked_rgba16 = true;
}
if (support_rgba16) {
*type = GL_UNSIGNED_SHORT;
} else {
*internal_format = GL_RGBA16F;
*type = GL_FLOAT;
}
break;
}
case GL_RGBA8:
*type = GL_UNSIGNED_BYTE;
break;