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texture: Don't try to compress buffer textures by default

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Buffer textures don't support compression, so we shouldn't try to driver-compress them, and we should not try to compress the RAM image unless explicitly overridden.
This commit is contained in:
rdb 2021-04-29 20:33:52 +02:00
parent 69c6050fa8
commit c1babd1ad1
2 changed files with 17 additions and 5 deletions
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9
panda/src/glstuff/glGraphicsStateGuardian_src.cxx
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@ -9797,7 +9797,8 @@ get_internal_image_format(Texture *tex, bool force_sized) const {
bool is_3d = (texture_type == Texture::TT_3d_texture ||
texture_type == Texture::TT_2d_texture_array);
if (get_supports_compressed_texture_format(compression)) {
if (get_supports_compressed_texture_format(compression) &&
texture_type != Texture::TT_buffer_texture) {
switch (compression) {
case Texture::CM_on:
// The user asked for just generic compression. OpenGL supports
@ -12852,7 +12853,9 @@ upload_texture(CLP(TextureContext) *gtc, bool force, bool uses_mipmaps) {
image_compression = tex->get_ram_image_compression();
}
if (!get_supports_compressed_texture_format(image_compression)) {
bool is_buffer_texture = tex->get_texture_type() == Texture::TT_buffer_texture;
if (is_buffer_texture ||
!get_supports_compressed_texture_format(image_compression)) {
image = tex->get_uncompressed_ram_image();
image_compression = Texture::CM_off;
@ -12870,7 +12873,7 @@ upload_texture(CLP(TextureContext) *gtc, bool force, bool uses_mipmaps) {
// If we'll use immutable texture storage, we have to pick a sized image
// format.
bool force_sized = (gl_immutable_texture_storage && _supports_tex_storage) ||
(tex->get_texture_type() == Texture::TT_buffer_texture);
(is_buffer_texture);
GLint internal_format = get_internal_image_format(tex, force_sized);
GLint external_format = get_external_image_format(tex);

13
panda/src/gobj/texture.cxx
View File

@ -5866,7 +5866,12 @@ do_consider_auto_process_ram_image(CData *cdata, bool generate_mipmaps,
if (allow_compression && !driver_compress_textures) {
CompressionMode compression = cdata->_compression;
if (compression == CM_default && compressed_textures) {
compression = CM_on;
if (cdata->_texture_type == Texture::TT_buffer_texture) {
compression = CM_off;
}
else {
compression = CM_on;
}
}
if (compression != CM_off && cdata->_ram_image_compression == CM_off) {
GraphicsStateGuardianBase *gsg = GraphicsStateGuardianBase::get_default_gsg();
@ -7249,7 +7254,11 @@ do_set_quality_level(CData *cdata, Texture::QualityLevel quality_level) {
bool Texture::
do_has_compression(const CData *cdata) const {
if (cdata->_compression == CM_default) {
return compressed_textures;
if (cdata->_texture_type != Texture::TT_buffer_texture) {
return compressed_textures;
} else {
return false;
}
} else {
return (cdata->_compression != CM_off);
}