diff options
Diffstat (limited to 'ui/console-gl.c')
| -rw-r--r-- | ui/console-gl.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/ui/console-gl.c b/ui/console-gl.c index 103b954..403fc36 100644 --- a/ui/console-gl.c +++ b/ui/console-gl.c @@ -25,6 +25,7 @@ * THE SOFTWARE. */ #include "qemu/osdep.h" +#include "qemu/error-report.h" #include "ui/console.h" #include "ui/shader.h" @@ -96,6 +97,53 @@ void surface_gl_create_texture(QemuGLShader *gls, glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); } +bool surface_gl_create_texture_from_fd(DisplaySurface *surface, + int fd, GLuint *texture, + GLuint *mem_obj) +{ + unsigned long size = surface_stride(surface) * surface_height(surface); + GLenum err = glGetError(); + *texture = 0; + *mem_obj = 0; + + if (!epoxy_has_gl_extension("GL_EXT_memory_object") || + !epoxy_has_gl_extension("GL_EXT_memory_object_fd")) { + error_report("spice: required OpenGL extensions not supported: " + "GL_EXT_memory_object and GL_EXT_memory_object_fd"); + return false; + } + +#ifdef GL_EXT_memory_object_fd + glCreateMemoryObjectsEXT(1, mem_obj); + glImportMemoryFdEXT(*mem_obj, size, GL_HANDLE_TYPE_OPAQUE_FD_EXT, fd); + + err = glGetError(); + if (err != GL_NO_ERROR) { + error_report("spice: cannot import memory object from fd"); + goto cleanup_mem; + } + + glGenTextures(1, texture); + glBindTexture(GL_TEXTURE_2D, *texture); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_TILING_EXT, GL_LINEAR_TILING_EXT); + glTexStorageMem2DEXT(GL_TEXTURE_2D, 1, GL_RGBA8, surface_width(surface), + surface_height(surface), *mem_obj, 0); + err = glGetError(); + if (err != GL_NO_ERROR) { + error_report("spice: cannot create texture from memory object"); + goto cleanup_tex_and_mem; + } + return true; + +cleanup_tex_and_mem: + glDeleteTextures(1, texture); +cleanup_mem: + glDeleteMemoryObjectsEXT(1, mem_obj); + +#endif + return false; +} + void surface_gl_update_texture(QemuGLShader *gls, DisplaySurface *surface, int x, int y, int w, int h) @@ -136,6 +184,12 @@ void surface_gl_destroy_texture(QemuGLShader *gls, } glDeleteTextures(1, &surface->texture); surface->texture = 0; +#ifdef GL_EXT_memory_object_fd + if (surface->mem_obj) { + glDeleteMemoryObjectsEXT(1, &surface->mem_obj); + surface->mem_obj = 0; + } +#endif } void surface_gl_setup_viewport(QemuGLShader *gls, |