This new function queries different driver parameters for a particular target
and texture format. It is basically a driver hook to support
ARB_internalformat_query2.
Since ARB_internalformat_query2 introduced several new query parameters
over ARB_internalformat_query, having one driver hook for each parameter
is no longer feasible. So this is the generic entry-point for calls
to glGetInternalFormativ and glGetInternalFormati64v.
---
src/mesa/main/dd.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 70ed563..c3845ca 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -192,6 +192,26 @@ struct dd_function_table {
int samples[16]);
/**
+ * Queries different driver parameters for a particular target and format.
+ * Since ARB_internalformat_query2 introduced several new query parameters
+ * over ARB_internalformat_query, having one driver hook for each parameter
+ * is no longer feasible. So this is the generic entry-point for calls
+ * to glGetInternalFormativ and glGetInternalFormati64v, after Mesa has
+ * checked errors and default values.
+ *
+ * \param ctx GL context
+ * \param target GL target enum
+ * \param internalFormat GL format enum
+ * \param pname GL enum that specifies the info to query.
+ * \param params Buffer to hold the result of the query.
+ */
+ void (*QueryInternalFormat)(struct gl_context *ctx,
+ GLenum target,
+ GLenum internalFormat,
+ GLenum pname,
+ GLint *params);
+
+ /**
* Called by glTexImage[123]D() and glCopyTexImage[12]D()
* Allocate texture memory and copy the user's image to the buffer.
* The gl_texture_image fields, etc. will be fully initialized.
--
2.5.3
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