68b3643b25
This adds a hook called COGL_SNIPPET_HOOK_TEXTURE_COORD_TRANSFORM. This can be used to alter the application of the layer user matrix to a texture coordinate or it can bypass it altogether. This is the first per-layer hook that affects the vertex shader state so the patch includes the boilerplate needed to get that to work. Reviewed-by: Robert Bragg <robert@linux.intel.com>
110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2011 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Neil Roberts <neil@linux.intel.com>
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*/
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#ifndef __COGL_PIPELINE_SNIPPET_PRIVATE_H
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#define __COGL_PIPELINE_SNIPPET_PRIVATE_H
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#include "cogl-snippet.h"
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#include "cogl-queue.h"
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typedef struct _CoglPipelineSnippet CoglPipelineSnippet;
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COGL_LIST_HEAD (CoglPipelineSnippetList, CoglPipelineSnippet);
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struct _CoglPipelineSnippet
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{
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COGL_LIST_ENTRY (CoglPipelineSnippet) list_node;
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CoglSnippet *snippet;
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};
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/* Arguments to pass to _cogl_pipeline_snippet_generate_code() */
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typedef struct
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{
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CoglPipelineSnippetList *snippets;
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/* Only snippets at this hook point will be used */
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CoglSnippetHook hook;
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/* The final function to chain on to after all of the snippets code
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has been run */
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const char *chain_function;
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/* The name of the final generated function */
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const char *final_name;
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/* A prefix to insert before each generate function name */
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const char *function_prefix;
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/* The return type of all of the functions, or NULL to use void */
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const char *return_type;
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/* A variable to return from the functions. The snippets are
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expected to modify this variable. Ignored if return_type is
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NULL */
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const char *return_variable;
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/* If this is TRUE then it won't allocate a separate variable for
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the return value. Instead it is expected that the snippet will
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modify one of the argument variables directly and that will be
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returned */
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gboolean return_variable_is_argument;
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/* The argument names or NULL if there are none */
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const char *arguments;
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/* The argument types or NULL */
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const char *argument_declarations;
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/* The string to generate the source into */
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GString *source_buf;
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} CoglPipelineSnippetData;
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void
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_cogl_pipeline_snippet_generate_code (const CoglPipelineSnippetData *data);
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void
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_cogl_pipeline_snippet_list_free (CoglPipelineSnippetList *list);
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void
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_cogl_pipeline_snippet_list_add (CoglPipelineSnippetList *list,
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CoglSnippet *snippet);
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void
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_cogl_pipeline_snippet_list_copy (CoglPipelineSnippetList *dst,
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const CoglPipelineSnippetList *src);
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void
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_cogl_pipeline_snippet_list_hash (CoglPipelineSnippetList *list,
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unsigned int *hash);
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gboolean
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_cogl_pipeline_snippet_list_equal (CoglPipelineSnippetList *list0,
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CoglPipelineSnippetList *list1);
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#endif /* __COGL_PIPELINE_SNIPPET_PRIVATE_H */
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