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Check sparse texture support before enabling

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This commit is contained in:
Brad Davis 2016-09-15 01:17:23 -07:00
parent a55669b83e
commit 151df32519
3 changed files with 13 additions and 9 deletions
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1
libraries/gpu-gl/src/gpu/gl/GLTexture.cpp
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@ -122,6 +122,7 @@ GLTexture::GLTexture(const std::weak_ptr<GLBackend>& backend, const Texture& tex
GLObject(backend, texture, id),
_storageStamp(texture.getStamp()),
_target(getGLTextureType(texture)),
_internalFormat(gl::GLTexelFormat::evalGLTexelFormatInternal(texture.getTexelFormat())),
_maxMip(texture.maxMip()),
_minMip(texture.minMip()),
_virtualSize(texture.evalTotalSize()),

1
libraries/gpu-gl/src/gpu/gl/GLTexture.h
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@ -113,6 +113,7 @@ public:
const GLuint& _texture { _id };
const Stamp _storageStamp;
const GLenum _target;
const GLenum _internalFormat;
const uint16 _maxMip;
uint16 _minMip;
const GLuint _virtualSize; // theoretical size as expected

20
libraries/gpu-gl/src/gpu/gl45/GL45BackendTexture.cpp
View file

@ -179,10 +179,13 @@ GLuint GL45Backend::getTextureID(const TexturePointer& texture, bool transfer) {
GL45Texture::GL45Texture(const std::weak_ptr<GLBackend>& backend, const Texture& texture, bool transferrable)
: GLTexture(backend, texture, allocate(texture), transferrable), _sparseInfo(*this), _transferState(*this) {
_sparse = enableSparseTextures && _transferrable && (_target != GL_TEXTURE_CUBE_MAP);
if (_sparse) {
glTextureParameteri(_id, GL_TEXTURE_SPARSE_ARB, GL_TRUE);
if (enableSparseTextures && _transferrable && (_target != GL_TEXTURE_CUBE_MAP)) {
GLint pageSizesCount = 0;
glGetInternalformativ(_target, _internalFormat, GL_NUM_VIRTUAL_PAGE_SIZES_ARB, 1, &pageSizesCount);
if (pageSizesCount > 0) {
_sparse = true;
glTextureParameteri(_id, GL_TEXTURE_SPARSE_ARB, GL_TRUE);
}
}
}
@ -231,15 +234,14 @@ void GL45Texture::generateMips() const {
}
void GL45Texture::allocateStorage() const {
GLTexelFormat texelFormat = GLTexelFormat::evalGLTexelFormat(_gpuObject.getTexelFormat());
glTextureParameteri(_id, GL_TEXTURE_BASE_LEVEL, 0);
glTextureParameteri(_id, GL_TEXTURE_MAX_LEVEL, _maxMip - _minMip);
if (_gpuObject.getTexelFormat().isCompressed()) {
qFatal("Compressed textures not yet supported");
}
glTextureParameteri(_id, GL_TEXTURE_BASE_LEVEL, 0);
glTextureParameteri(_id, GL_TEXTURE_MAX_LEVEL, _maxMip - _minMip);
// Get the dimensions, accounting for the downgrade level
Vec3u dimensions = _gpuObject.evalMipDimensions(_minMip);
glTextureStorage2D(_id, usedMipLevels(), texelFormat.internalFormat, dimensions.x, dimensions.y);
glTextureStorage2D(_id, usedMipLevels(), _internalFormat, dimensions.x, dimensions.y);
(void)CHECK_GL_ERROR();
}
@ -368,7 +370,7 @@ void GL45Texture::stripToMip(uint16_t newMinMip) {
return;
}
if (newMinMip >= _sparseInfo._maxSparseLevel) {
if (newMinMip > _sparseInfo._maxSparseLevel) {
qWarning() << "Cannot increase the min mip into the mip tail";
return;
}