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authormarha <marha@users.sourceforge.net>2014-01-15 21:37:10 +0100
committermarha <marha@users.sourceforge.net>2014-01-15 21:37:10 +0100
commitb7f01cb1f6cfd1ec301f650a073436c91ec614aa (patch)
tree1dbf32344313ad7e5884e6686251cad398a231fa /mesalib/src/mesa/main/teximage.c
parent7b4b94b4449aec056c4c92f5cacc2f89a292a80e (diff)
parent1b0fcca503ae9cf2d462b60770f96c794dfbb27a (diff)
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Merge remote-tracking branch 'origin/released'
* origin/released: mesa xkeyboard-config xserver git update 15 jan 2014 randrproto libfontenc mesa xserver git update 10 Jan 2014 randsrproto fontconfig libX11 git update 6 Jan 2014 Conflicts: mesalib/src/glsl/builtin_functions.cpp mesalib/src/glsl/ir_builder.h xorg-server/Xext/xres.c xorg-server/dix/dispatch.c xorg-server/dix/dixfonts.c xorg-server/hw/xwin/wingc.c xorg-server/hw/xwin/winwindowswm.c xorg-server/include/gc.h xorg-server/os/access.c
Diffstat (limited to 'mesalib/src/mesa/main/teximage.c')
-rw-r--r--mesalib/src/mesa/main/teximage.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/teximage.c b/mesalib/src/mesa/main/teximage.c
index 9c3f1e86e..8aac54e9d 100644
--- a/mesalib/src/mesa/main/teximage.c
+++ b/mesalib/src/mesa/main/teximage.c
@@ -1088,6 +1088,93 @@ _mesa_get_texture_dimensions(GLenum target)
/**
+ * Check if a texture target can have more than one layer.
+ */
+GLboolean
+_mesa_tex_target_is_layered(GLenum target)
+{
+ switch (target) {
+ case GL_TEXTURE_1D:
+ case GL_PROXY_TEXTURE_1D:
+ case GL_TEXTURE_2D:
+ case GL_PROXY_TEXTURE_2D:
+ case GL_TEXTURE_RECTANGLE:
+ case GL_PROXY_TEXTURE_RECTANGLE:
+ case GL_TEXTURE_2D_MULTISAMPLE:
+ case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
+ case GL_TEXTURE_BUFFER:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+ case GL_TEXTURE_EXTERNAL_OES:
+ return GL_FALSE;
+
+ case GL_TEXTURE_3D:
+ case GL_PROXY_TEXTURE_3D:
+ case GL_TEXTURE_CUBE_MAP:
+ case GL_PROXY_TEXTURE_CUBE_MAP:
+ case GL_TEXTURE_1D_ARRAY:
+ case GL_PROXY_TEXTURE_1D_ARRAY:
+ case GL_TEXTURE_2D_ARRAY:
+ case GL_PROXY_TEXTURE_2D_ARRAY:
+ case GL_TEXTURE_CUBE_MAP_ARRAY:
+ case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+ case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+ case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
+ return GL_TRUE;
+
+ default:
+ assert(!"Invalid texture target.");
+ return GL_FALSE;
+ }
+}
+
+
+/**
+ * Return the number of layers present in the given level of an array,
+ * cubemap or 3D texture. If the texture is not layered return zero.
+ */
+GLuint
+_mesa_get_texture_layers(const struct gl_texture_object *texObj, GLint level)
+{
+ assert(level >= 0 && level < MAX_TEXTURE_LEVELS);
+
+ switch (texObj->Target) {
+ case GL_TEXTURE_1D:
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_RECTANGLE:
+ case GL_TEXTURE_2D_MULTISAMPLE:
+ case GL_TEXTURE_BUFFER:
+ case GL_TEXTURE_EXTERNAL_OES:
+ return 0;
+
+ case GL_TEXTURE_CUBE_MAP:
+ return 6;
+
+ case GL_TEXTURE_1D_ARRAY: {
+ struct gl_texture_image *img = texObj->Image[0][level];
+ return img ? img->Height : 0;
+ }
+
+ case GL_TEXTURE_3D:
+ case GL_TEXTURE_2D_ARRAY:
+ case GL_TEXTURE_CUBE_MAP_ARRAY:
+ case GL_TEXTURE_2D_MULTISAMPLE_ARRAY: {
+ struct gl_texture_image *img = texObj->Image[0][level];
+ return img ? img->Depth : 0;
+ }
+
+ default:
+ assert(!"Invalid texture target.");
+ return 0;
+ }
+}
+
+
+/**
* Return the maximum number of mipmap levels for the given target
* and the dimensions.
* The dimensions are expected not to include the border.