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glgsg: if 32-bit unorm depth is not available, fallback to float

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This prevents falling back to 24-bit depth if 32-bit depth is requested.
This commit is contained in:
rdb 2018-07-12 14:17:02 +02:00
parent 828233a8f2
commit e41eeaae23
1 changed files with 17 additions and 0 deletions
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17
panda/src/glstuff/glGraphicsBuffer_src.cxx
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@ -989,6 +989,23 @@ bind_slot(int layer, bool rb_resize, Texture **attach, RenderTexturePlane slot,
GLint depth_size = 0;
glgsg->_glRenderbufferStorage(GL_RENDERBUFFER_EXT, gl_format, _rb_size_x, _rb_size_y);
glgsg->_glGetRenderbufferParameteriv(GL_RENDERBUFFER_EXT, GL_RENDERBUFFER_DEPTH_SIZE_EXT, &depth_size);
#ifndef OPENGLES
// Are we getting only 24 bits of depth when we requested 32? It may be
// because GL_DEPTH_COMPONENT32 is not a required format, while 32F is.
if (gl_format == GL_DEPTH_COMPONENT32 && depth_size < 32) {
if (!glgsg->_use_remapped_depth_range) {
gl_format = GL_DEPTH_COMPONENT32F;
} else {
gl_format = GL_DEPTH_COMPONENT32F_NV;
}
glgsg->_glRenderbufferStorage(GL_RENDERBUFFER_EXT, gl_format, _rb_size_x, _rb_size_y);
glgsg->_glGetRenderbufferParameteriv(GL_RENDERBUFFER_EXT, GL_RENDERBUFFER_DEPTH_SIZE_EXT, &depth_size);
_fb_properties.set_float_depth(true);
}
#endif
_fb_properties.set_depth_bits(depth_size);
_rb_data_size_bytes += _rb_size_x * _rb_size_y * (depth_size / 8);