mirror of
https://github.com/panda3d/panda3d.git
synced 2025-10-03 02:15:43 -04:00
use extensions for 3d and cube map textures
This commit is contained in:
David Rose
parent
c8a5f72fa6
commit
26664d4f5b
@ -346,6 +346,28 @@ reset() {
|
||||
get_extra_extensions();
|
||||
report_extensions();
|
||||
|
||||
_supports_3d_texture =
|
||||
has_extension("GL_EXT_texture3D") || is_at_least_version(1, 2);
|
||||
|
||||
if (_supports_3d_texture) {
|
||||
_glTexImage3D = (PFNGLTEXIMAGE3DPROC)
|
||||
get_extension_func(GLPREFIX_QUOTED, "TexImage3D");
|
||||
_glTexSubImage3D = (PFNGLTEXSUBIMAGE3DPROC)
|
||||
get_extension_func(GLPREFIX_QUOTED, "TexSubImage3D");
|
||||
|
||||
if (_glTexImage3D == NULL || _glTexSubImage3D == NULL) {
|
||||
GLCAT.warning()
|
||||
<< "3-D textures advertised as supported by OpenGL runtime, but could not get pointers to extension functions.\n";
|
||||
_supports_3d_texture = false;
|
||||
}
|
||||
}
|
||||
|
||||
_supports_cube_map =
|
||||
has_extension("GL_ARB_texture_cube_map") || is_at_least_version(1, 3);
|
||||
|
||||
_supports_rescale_normal =
|
||||
has_extension("GL_EXT_rescale_normal") || is_at_least_version(1, 2);
|
||||
|
||||
_supports_bgr =
|
||||
has_extension("GL_EXT_bgra") || is_at_least_version(1, 2);
|
||||
_supports_rescale_normal =
|
||||
@ -455,8 +477,17 @@ reset() {
|
||||
}
|
||||
|
||||
GLP(GetIntegerv)(GL_MAX_TEXTURE_SIZE, &_max_texture_size);
|
||||
GLP(GetIntegerv)(GL_MAX_3D_TEXTURE_SIZE, &_max_3d_texture_size);
|
||||
GLP(GetIntegerv)(GL_MAX_CUBE_MAP_TEXTURE_SIZE, &_max_cube_map_size);
|
||||
if (_supports_3d_texture) {
|
||||
GLP(GetIntegerv)(GL_MAX_3D_TEXTURE_SIZE, &_max_3d_texture_size);
|
||||
} else {
|
||||
_max_3d_texture_size = 0;
|
||||
}
|
||||
|
||||
if (_supports_cube_map) {
|
||||
GLP(GetIntegerv)(GL_MAX_CUBE_MAP_TEXTURE_SIZE, &_max_cube_map_size);
|
||||
} else {
|
||||
_max_cube_map_size = 0;
|
||||
}
|
||||
|
||||
if (GLCAT.is_debug()) {
|
||||
GLCAT.debug()
|
||||
@ -488,11 +519,15 @@ reset() {
|
||||
// to force the point with some drivers that aren't strictly
|
||||
// compliant w.r.t. initial settings).
|
||||
GLP(FrontFace)(GL_CCW);
|
||||
GLP(Disable)(GL_MULTISAMPLE);
|
||||
GLP(Disable)(GL_LINE_SMOOTH);
|
||||
GLP(Disable)(GL_POINT_SMOOTH);
|
||||
GLP(Disable)(GL_POLYGON_SMOOTH);
|
||||
|
||||
if (_supports_multisample) {
|
||||
GLP(Disable)(GL_MULTISAMPLE);
|
||||
}
|
||||
|
||||
|
||||
// Set up all the enabled/disabled flags to GL's known initial
|
||||
// values: everything off.
|
||||
_multisample_mode = 0;
|
||||
@ -3180,6 +3215,7 @@ set_read_buffer(const RenderBuffer &rb) {
|
||||
void CLP(GraphicsStateGuardian)::
|
||||
bind_texture(TextureContext *tc) {
|
||||
CLP(TextureContext) *gtc = DCAST(CLP(TextureContext), tc);
|
||||
report_my_gl_errors();
|
||||
|
||||
#ifdef GSG_VERBOSE
|
||||
Texture *tex = tc->_texture;
|
||||
@ -3188,8 +3224,10 @@ bind_texture(TextureContext *tc) {
|
||||
<< ")" << endl;
|
||||
#endif
|
||||
|
||||
GLP(BindTexture)(get_texture_target(tc->_texture->get_texture_type()),
|
||||
gtc->_index);
|
||||
GLenum target = get_texture_target(tc->_texture->get_texture_type());
|
||||
if (target != GL_NONE) {
|
||||
GLP(BindTexture)(target, gtc->_index);
|
||||
}
|
||||
|
||||
report_my_gl_errors();
|
||||
}
|
||||
@ -3202,6 +3240,10 @@ bind_texture(TextureContext *tc) {
|
||||
void CLP(GraphicsStateGuardian)::
|
||||
specify_texture(Texture *tex) {
|
||||
GLenum target = get_texture_target(tex->get_texture_type());
|
||||
if (target == GL_NONE) {
|
||||
// Unsupported target (e.g. 3-d texturing on GL 1.1).
|
||||
return;
|
||||
}
|
||||
|
||||
GLP(TexParameteri)(target, GL_TEXTURE_WRAP_S,
|
||||
get_texture_wrap_mode(tex->get_wrap_u()));
|
||||
@ -3358,6 +3400,7 @@ apply_texture_immediate(CLP(TextureContext) *gtc, Texture *tex) {
|
||||
|
||||
if (max_dimension == 0) {
|
||||
// Guess this GL doesn't support cube mapping/3d textures.
|
||||
report_my_gl_errors();
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -3437,6 +3480,11 @@ apply_texture_immediate(CLP(TextureContext) *gtc, Texture *tex) {
|
||||
if (tex->get_texture_type() == Texture::TT_cube_map) {
|
||||
// A cube map must load six different 2-d images (which are stored
|
||||
// as the six pages of the system ram image).
|
||||
if (!_supports_cube_map) {
|
||||
report_my_gl_errors();
|
||||
return false;
|
||||
}
|
||||
|
||||
size_t page_size = height * width * texel_size;
|
||||
const unsigned char *image_base = image;
|
||||
|
||||
@ -3499,9 +3547,11 @@ apply_texture_immediate(CLP(TextureContext) *gtc, Texture *tex) {
|
||||
}
|
||||
#endif
|
||||
|
||||
report_my_gl_errors();
|
||||
return true;
|
||||
}
|
||||
|
||||
report_my_gl_errors();
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -3518,6 +3568,11 @@ upload_texture_image(CLP(TextureContext) *gtc,
|
||||
int width, int height, int depth,
|
||||
GLint external_format, GLenum component_type,
|
||||
const unsigned char *image) {
|
||||
if (target == GL_NONE) {
|
||||
// Unsupported target (e.g. 3-d texturing on GL 1.1).
|
||||
return false;
|
||||
}
|
||||
|
||||
if (uses_mipmaps) {
|
||||
#ifndef NDEBUG
|
||||
if (CLP(show_mipmaps) && target == GL_TEXTURE_2D) {
|
||||
@ -3530,6 +3585,7 @@ upload_texture_image(CLP(TextureContext) *gtc,
|
||||
if (!_supports_generate_mipmap || !auto_generate_mipmaps) {
|
||||
// We only need to build the mipmaps by hand if the GL
|
||||
// doesn't support generating them automatically.
|
||||
bool success = true;
|
||||
switch (target) {
|
||||
case GL_TEXTURE_1D:
|
||||
GLUP(Build1DMipmaps)(target, internal_format, width,
|
||||
@ -3537,11 +3593,16 @@ upload_texture_image(CLP(TextureContext) *gtc,
|
||||
break;
|
||||
|
||||
case GL_TEXTURE_3D:
|
||||
/* TODO: extension function.
|
||||
#ifdef GLU_VERSION_1_3
|
||||
GLUP(Build3DMipmaps)(target, internal_format,
|
||||
width, height, depth,
|
||||
external_format, component_type, image);
|
||||
*/
|
||||
#else // GLU_VERSION_1_3
|
||||
// Prior to GLU 1.3, there was no gluBuild3DMipmaps() call.
|
||||
// Just fall through and load the texture without mipmaps.
|
||||
GLP(TexParameteri)(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
success = false;
|
||||
#endif // GLU_VERSION_1_3
|
||||
break;
|
||||
|
||||
default:
|
||||
@ -3551,7 +3612,9 @@ upload_texture_image(CLP(TextureContext) *gtc,
|
||||
}
|
||||
|
||||
report_my_gl_errors();
|
||||
return true;
|
||||
if (success) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -3569,11 +3632,14 @@ upload_texture_image(CLP(TextureContext) *gtc,
|
||||
break;
|
||||
|
||||
case GL_TEXTURE_3D:
|
||||
/* TODO: extension function
|
||||
GLP(TexImage3D)(target, 0, internal_format,
|
||||
if (_supports_3d_texture) {
|
||||
_glTexImage3D(target, 0, internal_format,
|
||||
width, height, depth, 0,
|
||||
external_format, component_type, image);
|
||||
*/
|
||||
} else {
|
||||
report_my_gl_errors();
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
@ -3592,10 +3658,13 @@ upload_texture_image(CLP(TextureContext) *gtc,
|
||||
break;
|
||||
|
||||
case GL_TEXTURE_3D:
|
||||
/* TODO: extension function.
|
||||
GLP(TexSubImage3D)(target, 0, 0, 0, 0, width, height, depth,
|
||||
if (_supports_3d_texture) {
|
||||
_glTexSubImage3D(target, 0, 0, 0, 0, width, height, depth,
|
||||
external_format, component_type, image);
|
||||
*/
|
||||
} else {
|
||||
report_my_gl_errors();
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
@ -3626,12 +3695,12 @@ upload_texture_image(CLP(TextureContext) *gtc,
|
||||
|
||||
////////////////////////////////////////////////////////////////////
|
||||
// Function: CLP(GraphicsStateGuardian)::get_texture_target
|
||||
// Access: Protected, Static
|
||||
// Access: Protected
|
||||
// Description: Maps from the Texture's texture type symbols to
|
||||
// GL's.
|
||||
////////////////////////////////////////////////////////////////////
|
||||
GLenum CLP(GraphicsStateGuardian)::
|
||||
get_texture_target(Texture::TextureType texture_type) {
|
||||
get_texture_target(Texture::TextureType texture_type) const {
|
||||
switch (texture_type) {
|
||||
case Texture::TT_1d_texture:
|
||||
return GL_TEXTURE_1D;
|
||||
@ -3640,10 +3709,18 @@ get_texture_target(Texture::TextureType texture_type) {
|
||||
return GL_TEXTURE_2D;
|
||||
|
||||
case Texture::TT_3d_texture:
|
||||
return GL_TEXTURE_3D;
|
||||
if (_supports_3d_texture) {
|
||||
return GL_TEXTURE_3D;
|
||||
} else {
|
||||
return GL_NONE;
|
||||
}
|
||||
|
||||
case Texture::TT_cube_map:
|
||||
return GL_TEXTURE_CUBE_MAP;
|
||||
if (_supports_cube_map) {
|
||||
return GL_TEXTURE_CUBE_MAP;
|
||||
} else {
|
||||
return GL_NONE;
|
||||
}
|
||||
}
|
||||
|
||||
GLCAT.error() << "Invalid Texture::TextureType value!\n";
|
||||
@ -4521,14 +4598,21 @@ finish_modify_state() {
|
||||
break;
|
||||
|
||||
case TexGenAttrib::M_cube_map:
|
||||
GLP(TexGeni)(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
|
||||
GLP(TexGeni)(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
|
||||
GLP(TexGeni)(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_S);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_T);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_R);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_Q);
|
||||
force_normal = true;
|
||||
if (_supports_cube_map) {
|
||||
GLP(TexGeni)(GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
|
||||
GLP(TexGeni)(GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
|
||||
GLP(TexGeni)(GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_S);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_T);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_R);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_Q);
|
||||
force_normal = true;
|
||||
} else {
|
||||
GLP(Disable)(GL_TEXTURE_GEN_S);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_T);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_R);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_Q);
|
||||
}
|
||||
break;
|
||||
|
||||
case TexGenAttrib::M_object_position:
|
||||
@ -4604,14 +4688,21 @@ finish_modify_state() {
|
||||
break;
|
||||
|
||||
case TexGenAttrib::M_object_normal:
|
||||
GLP(TexGeni)(GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP);
|
||||
GLP(TexGeni)(GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP);
|
||||
GLP(TexGeni)(GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_S);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_T);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_R);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_Q);
|
||||
force_normal = true;
|
||||
if (_supports_cube_map) {
|
||||
GLP(TexGeni)(GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP);
|
||||
GLP(TexGeni)(GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP);
|
||||
GLP(TexGeni)(GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_S);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_T);
|
||||
GLP(Enable)(GL_TEXTURE_GEN_R);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_Q);
|
||||
force_normal = true;
|
||||
} else {
|
||||
GLP(Disable)(GL_TEXTURE_GEN_S);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_T);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_R);
|
||||
GLP(Disable)(GL_TEXTURE_GEN_Q);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -4725,7 +4816,20 @@ do_issue_texture() {
|
||||
// Stage i has changed. Issue the texture on this stage.
|
||||
_glActiveTexture(GL_TEXTURE0 + i);
|
||||
|
||||
GLP(Enable)(get_texture_target(texture->get_texture_type()));
|
||||
GLenum target = get_texture_target(texture->get_texture_type());
|
||||
if (target == GL_NONE) {
|
||||
// Unsupported texture mode.
|
||||
GLP(Disable)(GL_TEXTURE_1D);
|
||||
GLP(Disable)(GL_TEXTURE_2D);
|
||||
if (_supports_3d_texture) {
|
||||
GLP(Disable)(GL_TEXTURE_3D);
|
||||
}
|
||||
if (_supports_cube_map) {
|
||||
GLP(Disable)(GL_TEXTURE_CUBE_MAP);
|
||||
}
|
||||
break;
|
||||
}
|
||||
GLP(Enable)(target);
|
||||
|
||||
TextureContext *tc = texture->prepare_now(_prepared_objects, this);
|
||||
apply_texture(tc);
|
||||
@ -4844,8 +4948,12 @@ do_issue_texture() {
|
||||
_glActiveTexture(GL_TEXTURE0 + i);
|
||||
GLP(Disable)(GL_TEXTURE_1D);
|
||||
GLP(Disable)(GL_TEXTURE_2D);
|
||||
GLP(Disable)(GL_TEXTURE_3D);
|
||||
GLP(Disable)(GL_TEXTURE_CUBE_MAP);
|
||||
if (_supports_3d_texture) {
|
||||
GLP(Disable)(GL_TEXTURE_3D);
|
||||
}
|
||||
if (_supports_cube_map) {
|
||||
GLP(Disable)(GL_TEXTURE_CUBE_MAP);
|
||||
}
|
||||
}
|
||||
|
||||
_current_texture = new_texture;
|
||||
|
||||
@ -210,7 +210,7 @@ protected:
|
||||
GLint external_format, GLenum component_type,
|
||||
const unsigned char *image);
|
||||
|
||||
static GLenum get_texture_target(Texture::TextureType texture_type);
|
||||
GLenum get_texture_target(Texture::TextureType texture_type) const;
|
||||
GLenum get_texture_wrap_mode(Texture::WrapMode wm);
|
||||
static GLenum get_texture_filter_type(Texture::FilterType ft, bool ignore_mipmaps);
|
||||
static GLenum get_component_type(Texture::ComponentType component_type);
|
||||
@ -293,6 +293,12 @@ protected:
|
||||
pset<string> _extensions;
|
||||
|
||||
public:
|
||||
bool _supports_3d_texture;
|
||||
PFNGLTEXIMAGE3DPROC _glTexImage3D;
|
||||
PFNGLTEXSUBIMAGE3DPROC _glTexSubImage3D;
|
||||
|
||||
bool _supports_cube_map;
|
||||
|
||||
GLint _max_texture_size;
|
||||
GLint _max_3d_texture_size;
|
||||
GLint _max_cube_map_size;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user