mesa/objectlabel: don't do memcpy if bufSize is 0 (v2)

[mesa.git] / src / mesa / main / shaderimage.h

diff --git a/src/mesa/main/shaderimage.h b/src/mesa/main/shaderimage.h
index d08ece81f11d735f4d65cf2669e1117589daa470..85193e104f65166d24a19d5e35bc8d519e69f845 100644 (file)
--- a/src/mesa/main/shaderimage.h
+++ b/src/mesa/main/shaderimage.h
@@ -42,6 +42,26 @@ struct gl_context;
 mesa_format
 _mesa_get_shader_image_format(GLenum format);
 
+/**
+ * Get the GL image format class for a shader image format GL enum
+ */
+GLenum
+_mesa_get_image_format_class(GLenum format);
+
+/**
+ * Return whether an image format should be supported based on the current API
+ * version of the context.
+ */
+bool
+_mesa_is_shader_image_format_supported(const struct gl_context *ctx,
+                                       GLenum format);
+
+/**
+ * Get a single image unit struct with the default state.
+ */
+struct gl_image_unit
+_mesa_default_image_unit(struct gl_context *ctx);
+
 /**
  * Initialize a context's shader image units to the default state.
  */
@@ -49,13 +69,15 @@ void
 _mesa_init_image_units(struct gl_context *ctx);
 
 /**
- * Recalculate the \c _Valid flag of a context's shader image units.
+ * Return GL_TRUE if the state of the image unit passed as argument is valid
+ * and access from the shader is allowed.  Otherwise loads from this unit
+ * should return zero and stores should have no effect.
  *
- * To be called when the state of any texture bound to an image unit
- * changes.
+ * The result depends on context state other than the passed image unit, part
+ * of the _NEW_TEXTURE set.
  */
-void
-_mesa_validate_image_units(struct gl_context *ctx);
+GLboolean
+_mesa_is_image_unit_valid(struct gl_context *ctx, struct gl_image_unit *u);
 
 void GLAPIENTRY
 _mesa_BindImageTexture(GLuint unit, GLuint texture, GLint level,