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gles2gsg: Implement support for GL_EXT_clear_texture in OpenGL ES 2+

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rdb 2021-08-30 14:02:41 +02:00
parent 481fc67996
commit 8c01f7faff
3 changed files with 25 additions and 3 deletions
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10
panda/src/gles2gsg/panda_esgl2ext.h
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@ -1050,6 +1050,16 @@ GL_APICALL void GL_APIENTRY glBufferStorageEXT (GLenum target, GLsizeiptr size,
#endif
#endif /* GL_EXT_buffer_storage */
#ifndef GL_EXT_clear_texture
#define GL_EXT_clear_texture 1
typedef void (GL_APIENTRYP PFNGLCLEARTEXIMAGEEXTPROC) (GLuint texture, GLint level, GLenum format, GLenum type, const void *data);
typedef void (GL_APIENTRYP PFNGLCLEARTEXSUBIMAGEEXTPROC) (GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void *data);
#ifdef GL_GLEXT_PROTOTYPES
GL_APICALL void GL_APIENTRY glClearTexImageEXT (GLuint texture, GLint level, GLenum format, GLenum type, const void *data);
GL_APICALL void GL_APIENTRY glClearTexSubImageEXT (GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void *data);
#endif
#endif /* GL_EXT_clear_texture */
#ifndef GL_EXT_clip_control
#define GL_EXT_clip_control 1
#define GL_LOWER_LEFT_EXT 0x8CA1

12
panda/src/glstuff/glGraphicsStateGuardian_src.cxx
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@ -1080,6 +1080,18 @@ reset() {
_supports_clear_texture = true;
}
}
#elif !defined(OPENGLES_1)
if (has_extension("GL_EXT_clear_texture")) {
_glClearTexImage = (PFNGLCLEARTEXIMAGEEXTPROC)
get_extension_func("glClearTexImageEXT");
if (_glClearTexImage == nullptr) {
GLCAT.warning()
<< "GL_EXT_clear_texture advertised as supported by OpenGL runtime, but could not get pointers to extension function.\n";
} else {
_supports_clear_texture = true;
}
}
#endif
_supports_clear_buffer = false;

6
panda/src/glstuff/glGraphicsStateGuardian_src.h
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@ -229,10 +229,10 @@ typedef void (APIENTRYP PFNGLPROGRAMBINARYPROC) (GLuint program, GLenum binaryFo
typedef void (APIENTRYP PFNGLGETINTERNALFORMATIVPROC) (GLenum target, GLenum internalformat, GLenum pname, GLsizei bufSize, GLint *params);
typedef void (APIENTRYP PFNGLBUFFERSTORAGEPROC) (GLenum target, GLsizeiptr size, const void *data, GLbitfield flags);
typedef void (APIENTRYP PFNGLBINDIMAGETEXTUREPROC) (GLuint unit, GLuint texture, GLint level, GLboolean layered, GLint layer, GLenum access, GLenum format);
#endif // OPENGLES_1
#ifndef OPENGLES
typedef void (APIENTRYP PFNGLCLEARTEXIMAGEPROC) (GLuint texture, GLint level, GLenum format, GLenum type, const void *data);
typedef void (APIENTRYP PFNGLCLEARTEXSUBIMAGEPROC) (GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void *data);
#endif // OPENGLES_1
#ifndef OPENGLES
typedef void (APIENTRYP PFNGLBINDTEXTURESPROC) (GLuint first, GLsizei count, const GLuint *textures);
typedef void (APIENTRYP PFNGLBINDSAMPLERSPROC) (GLuint first, GLsizei count, const GLuint *samplers);
typedef void (APIENTRYP PFNGLBINDIMAGETEXTURESPROC) (GLuint first, GLsizei count, const GLuint *textures);
@ -804,7 +804,7 @@ public:
#endif
bool _supports_clear_texture;
#ifndef OPENGLES
#ifndef OPENGLES_1
PFNGLCLEARTEXIMAGEPROC _glClearTexImage;
#endif