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check for unsigned_short support for gles2 depth buffer allocation

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This commit is contained in:
clayjohn 2019-08-09 23:12:58 -07:00
parent 3c7327da33
commit 049dd309fe
1 changed files with 37 additions and 9 deletions
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46
drivers/gles2/rasterizer_storage_gles2.cpp
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@ -5691,21 +5691,49 @@ void RasterizerStorageGLES2::initialize() {
GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status == GL_FRAMEBUFFER_COMPLETE) {
config.depth_internalformat = GL_DEPTH_COMPONENT;
config.depth_type = GL_UNSIGNED_INT;
} else {
config.depth_internalformat = GL_DEPTH_COMPONENT16;
config.depth_type = GL_UNSIGNED_SHORT;
}
glBindFramebuffer(GL_FRAMEBUFFER, system_fbo);
glDeleteFramebuffers(1, &fbo);
glBindTexture(GL_TEXTURE_2D, 0);
glDeleteTextures(1, &depth);
if (status == GL_FRAMEBUFFER_COMPLETE) {
config.depth_internalformat = GL_DEPTH_COMPONENT;
config.depth_type = GL_UNSIGNED_INT;
} else {
// If it fails, test to see if it supports a framebuffer texture using UNSIGNED_SHORT
// This is needed because many OSX devices don't support either UNSIGNED_INT or UNSIGNED_SHORT
config.depth_internalformat = GL_DEPTH_COMPONENT16;
config.depth_type = GL_UNSIGNED_SHORT;
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glGenTextures(1, &depth);
glBindTexture(GL_TEXTURE_2D, depth);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT16, 32, 32, 0, GL_DEPTH_COMPONENT16, GL_UNSIGNED_SHORT, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depth, 0);
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
//if it fails again depth textures aren't supported, use rgba shadows and renderbuffer for depth
config.support_depth_texture = false;
config.use_rgba_3d_shadows = true;
}
glBindFramebuffer(GL_FRAMEBUFFER, system_fbo);
glDeleteFramebuffers(1, &fbo);
glBindTexture(GL_TEXTURE_2D, 0);
glDeleteTextures(1, &depth);
}
} else {
// Will use renderbuffer for depth
// Will use renderbuffer for depth, on mobile check for 24 bit depth support
if (config.extensions.has("GL_OES_depth24")) {
config.depth_internalformat = _DEPTH_COMPONENT24_OES;
config.depth_type = GL_UNSIGNED_INT;