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GLES: Actually support depthless FBOs.

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We use these for temp buffers.  This might at least save some VRAM.
This commit is contained in:
Unknown W. Brackets 2018-12-16 13:28:48 -08:00
parent 57767ba1f8
commit 2dc3912d0a
1 changed files with 21 additions and 1 deletions
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22
ext/native/thin3d/GLQueueRunner.cpp
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@ -415,7 +415,20 @@ void GLQueueRunner::InitCreateFramebuffer(const GLRInitStep &step) {
glGenFramebuffers(1, &fbo->handle);
initFBOTexture(fbo->color_texture, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE, true);
if (gl_extensions.IsGLES) {
retry_depth:
if (!fbo->z_stencil_) {
ILOG("Creating %i x %i FBO using no depth", fbo->width, fbo->height);
fbo->z_stencil_buffer = 0;
fbo->stencil_buffer = 0;
fbo->z_buffer = 0;
// Bind it all together
glBindFramebuffer(GL_FRAMEBUFFER, fbo->handle);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fbo->color_texture.texture, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
} else if (gl_extensions.IsGLES) {
if (gl_extensions.OES_packed_depth_stencil && (gl_extensions.OES_depth_texture || gl_extensions.GLES3)) {
ILOG("Creating %i x %i FBO using DEPTH24_STENCIL8 texture", fbo->width, fbo->height);
fbo->z_stencil_buffer = 0;
@ -501,6 +514,13 @@ void GLQueueRunner::InitCreateFramebuffer(const GLRInitStep &step) {
}
GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE && !fbo->z_buffer) {
CHECK_GL_ERROR_IF_DEBUG();
// Uh oh, maybe we need a z/stencil. Platforms sometimes, right?
fbo->z_stencil_ = true;
goto retry_depth;
}
switch (status) {
case GL_FRAMEBUFFER_COMPLETE:
// ILOG("Framebuffer verified complete.");