src/mesa/main/glthread_marshal.h - platform/external/mesa3d - Git at Google

 /*
  * Copyright © 2012 Intel Corporation
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice (including the next
  * paragraph) shall be included in all copies or substantial portions of the
  * Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  * IN THE SOFTWARE.
  */

 /** \file glthread_marshal.h
  *
  * Declarations of functions related to marshalling GL calls from a client
  * thread to a server thread.
  */

 #ifndef MARSHAL_H
 #define MARSHAL_H

 #include "main/glthread.h"
 #include "main/context.h"
 #include "main/macros.h"
 #include "marshal_generated.h"

 struct marshal_cmd_base
 {
    /**
     * Type of command.  See enum marshal_dispatch_cmd_id.
     */
    uint16_t cmd_id;

    /**
     * Size of command, in multiples of 4 bytes, including cmd_base.
     */
    uint16_t cmd_size;
 };

 typedef void (*_mesa_unmarshal_func)(struct gl_context *ctx, const void *cmd);
 extern const _mesa_unmarshal_func _mesa_unmarshal_dispatch[NUM_DISPATCH_CMD];

 static inline void *
 _mesa_glthread_allocate_command(struct gl_context *ctx,
                                 uint16_t cmd_id,
                                 int size)
 {
    struct glthread_state *glthread = &ctx->GLThread;
    struct glthread_batch *next = glthread->next_batch;
    struct marshal_cmd_base *cmd_base;

    if (unlikely(next->used + size > MARSHAL_MAX_CMD_SIZE)) {
       _mesa_glthread_flush_batch(ctx);
       next = glthread->next_batch;
    }

    const int aligned_size = align(size, 8);
    cmd_base = (struct marshal_cmd_base *)&next->buffer[next->used];
    next->used += aligned_size;
    cmd_base->cmd_id = cmd_id;
    cmd_base->cmd_size = aligned_size;
    return cmd_base;
 }

 /**
  * Instead of conditionally handling marshaling immediate index data in draw
  * calls (deprecated and removed in GL core), we just disable threading.
  */
 static inline bool
 _mesa_glthread_has_non_vbo_vertices_or_indices(const struct gl_context *ctx)
 {
    const struct glthread_state *glthread = &ctx->GLThread;
    struct glthread_vao *vao = glthread->CurrentVAO;

    return ctx->API != API_OPENGL_CORE &&
           (vao->CurrentElementBufferName == 0 ||
            (vao->UserPointerMask & vao->BufferEnabled));
 }

 static inline bool
 _mesa_glthread_has_non_vbo_vertices(const struct gl_context *ctx)
 {
    const struct glthread_state *glthread = &ctx->GLThread;
    const struct glthread_vao *vao = glthread->CurrentVAO;

    return ctx->API != API_OPENGL_CORE &&
           (vao->UserPointerMask & vao->BufferEnabled);
 }

 static inline bool
 _mesa_glthread_has_non_vbo_vertices_or_indirect(const struct gl_context *ctx)
 {
    const struct glthread_state *glthread = &ctx->GLThread;
    const struct glthread_vao *vao = glthread->CurrentVAO;

    return ctx->API != API_OPENGL_CORE &&
           (glthread->CurrentDrawIndirectBufferName == 0 ||
            (vao->UserPointerMask & vao->BufferEnabled));
 }

 static inline bool
 _mesa_glthread_has_non_vbo_vertices_or_indices_or_indirect(const struct gl_context *ctx)
 {
    const struct glthread_state *glthread = &ctx->GLThread;
    struct glthread_vao *vao = glthread->CurrentVAO;

    return ctx->API != API_OPENGL_CORE &&
           (glthread->CurrentDrawIndirectBufferName == 0 ||
            vao->CurrentElementBufferName == 0 ||
            (vao->UserPointerMask & vao->BufferEnabled));
 }


 struct _glapi_table *
 _mesa_create_marshal_table(const struct gl_context *ctx);

 static inline unsigned
 _mesa_buffer_enum_to_count(GLenum buffer)
 {
    switch (buffer) {
    case GL_COLOR:
       return 4;
    case GL_DEPTH_STENCIL:
       return 2;
    case GL_STENCIL:
    case GL_DEPTH:
       return 1;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_tex_param_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_TEXTURE_MIN_FILTER:
    case GL_TEXTURE_MAG_FILTER:
    case GL_TEXTURE_WRAP_S:
    case GL_TEXTURE_WRAP_T:
    case GL_TEXTURE_WRAP_R:
    case GL_TEXTURE_BASE_LEVEL:
    case GL_TEXTURE_MAX_LEVEL:
    case GL_GENERATE_MIPMAP_SGIS:
    case GL_TEXTURE_COMPARE_MODE_ARB:
    case GL_TEXTURE_COMPARE_FUNC_ARB:
    case GL_DEPTH_TEXTURE_MODE_ARB:
    case GL_DEPTH_STENCIL_TEXTURE_MODE:
    case GL_TEXTURE_SRGB_DECODE_EXT:
    case GL_TEXTURE_CUBE_MAP_SEAMLESS:
    case GL_TEXTURE_SWIZZLE_R:
    case GL_TEXTURE_SWIZZLE_G:
    case GL_TEXTURE_SWIZZLE_B:
    case GL_TEXTURE_SWIZZLE_A:
    case GL_TEXTURE_MIN_LOD:
    case GL_TEXTURE_MAX_LOD:
    case GL_TEXTURE_PRIORITY:
    case GL_TEXTURE_MAX_ANISOTROPY_EXT:
    case GL_TEXTURE_LOD_BIAS:
    case GL_TEXTURE_TILING_EXT:
       return 1;
    case GL_TEXTURE_CROP_RECT_OES:
    case GL_TEXTURE_SWIZZLE_RGBA:
    case GL_TEXTURE_BORDER_COLOR:
       return 4;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_fog_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_FOG_MODE:
    case GL_FOG_DENSITY:
    case GL_FOG_START:
    case GL_FOG_END:
    case GL_FOG_INDEX:
    case GL_FOG_COORDINATE_SOURCE_EXT:
    case GL_FOG_DISTANCE_MODE_NV:
       return 1;
    case GL_FOG_COLOR:
       return 4;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_light_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_AMBIENT:
    case GL_DIFFUSE:
    case GL_SPECULAR:
    case GL_POSITION:
       return 4;
    case GL_SPOT_DIRECTION:
       return 3;
    case GL_SPOT_EXPONENT:
    case GL_SPOT_CUTOFF:
    case GL_CONSTANT_ATTENUATION:
    case GL_LINEAR_ATTENUATION:
    case GL_QUADRATIC_ATTENUATION:
       return 1;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_light_model_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_LIGHT_MODEL_AMBIENT:
       return 4;
    case GL_LIGHT_MODEL_LOCAL_VIEWER:
    case GL_LIGHT_MODEL_TWO_SIDE:
    case GL_LIGHT_MODEL_COLOR_CONTROL:
       return 1;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_texenv_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_TEXTURE_ENV_MODE:
    case GL_COMBINE_RGB:
    case GL_COMBINE_ALPHA:
    case GL_SOURCE0_RGB:
    case GL_SOURCE1_RGB:
    case GL_SOURCE2_RGB:
    case GL_SOURCE3_RGB_NV:
    case GL_SOURCE0_ALPHA:
    case GL_SOURCE1_ALPHA:
    case GL_SOURCE2_ALPHA:
    case GL_SOURCE3_ALPHA_NV:
    case GL_OPERAND0_RGB:
    case GL_OPERAND1_RGB:
    case GL_OPERAND2_RGB:
    case GL_OPERAND3_RGB_NV:
    case GL_OPERAND0_ALPHA:
    case GL_OPERAND1_ALPHA:
    case GL_OPERAND2_ALPHA:
    case GL_OPERAND3_ALPHA_NV:
    case GL_RGB_SCALE:
    case GL_ALPHA_SCALE:
    case GL_TEXTURE_LOD_BIAS_EXT:
    case GL_COORD_REPLACE_NV:
       return 1;
    case GL_TEXTURE_ENV_COLOR:
       return 4;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_texgen_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_TEXTURE_GEN_MODE:
       return 1;
    case GL_OBJECT_PLANE:
    case GL_EYE_PLANE:
       return 4;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_material_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_EMISSION:
    case GL_AMBIENT:
    case GL_DIFFUSE:
    case GL_SPECULAR:
    case GL_AMBIENT_AND_DIFFUSE:
       return 4;
    case GL_COLOR_INDEXES:
       return 3;
    case GL_SHININESS:
       return 1;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_point_param_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_DISTANCE_ATTENUATION_EXT:
       return 3;
    case GL_POINT_SIZE_MIN_EXT:
    case GL_POINT_SIZE_MAX_EXT:
    case GL_POINT_FADE_THRESHOLD_SIZE_EXT:
    case GL_POINT_SPRITE_R_MODE_NV:
    case GL_POINT_SPRITE_COORD_ORIGIN:
       return 1;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_calllists_enum_to_count(GLenum type)
 {
    switch (type) {
    case GL_BYTE:
    case GL_UNSIGNED_BYTE:
       return 1;
    case GL_SHORT:
    case GL_UNSIGNED_SHORT:
    case GL_2_BYTES:
       return 2;
    case GL_3_BYTES:
       return 3;
    case GL_INT:
    case GL_UNSIGNED_INT:
    case GL_FLOAT:
    case GL_4_BYTES:
       return 4;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_patch_param_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_PATCH_DEFAULT_OUTER_LEVEL:
       return 4;
    case GL_PATCH_DEFAULT_INNER_LEVEL:
       return 2;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_memobj_enum_to_count(GLenum pname)
 {
    switch (pname) {
    case GL_DEDICATED_MEMORY_OBJECT_EXT:
       return 1;
    default:
       return 0;
    }
 }

 static inline unsigned
 _mesa_semaphore_enum_to_count(GLenum pname)
 {
    switch (pname) {
    /* EXT_semaphore and EXT_semaphore_fd define no parameters */
    default:
       return 0;
    }
 }

 static inline gl_vert_attrib
 _mesa_array_to_attrib(struct gl_context *ctx, GLenum array)
 {
    switch (array) {
    case GL_VERTEX_ARRAY:
       return VERT_ATTRIB_POS;
    case GL_NORMAL_ARRAY:
       return VERT_ATTRIB_NORMAL;
    case GL_COLOR_ARRAY:
       return VERT_ATTRIB_COLOR0;
    case GL_INDEX_ARRAY:
       return VERT_ATTRIB_COLOR_INDEX;
    case GL_TEXTURE_COORD_ARRAY:
       return VERT_ATTRIB_TEX(ctx->GLThread.ClientActiveTexture);
    case GL_EDGE_FLAG_ARRAY:
       return VERT_ATTRIB_EDGEFLAG;
    case GL_FOG_COORDINATE_ARRAY:
       return VERT_ATTRIB_FOG;
    case GL_SECONDARY_COLOR_ARRAY:
       return VERT_ATTRIB_COLOR1;
    case GL_POINT_SIZE_ARRAY_OES:
       return VERT_ATTRIB_POINT_SIZE;
    case GL_PRIMITIVE_RESTART_NV:
       return VERT_ATTRIB_PRIMITIVE_RESTART_NV;
    default:
       if (array >= GL_TEXTURE0 && array <= GL_TEXTURE7)
          return VERT_ATTRIB_TEX(array - GL_TEXTURE0);
       return VERT_ATTRIB_MAX;
    }
 }

 #endif /* MARSHAL_H */
	/*
	* Copyright © 2012 Intel Corporation
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice (including the next
	* paragraph) shall be included in all copies or substantial portions of the
	* Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	* IN THE SOFTWARE.
	*/

	/** \file glthread_marshal.h
	*
	* Declarations of functions related to marshalling GL calls from a client
	* thread to a server thread.
	*/

	#ifndef MARSHAL_H
	#define MARSHAL_H

	#include "main/glthread.h"
	#include "main/context.h"
	#include "main/macros.h"
	#include "marshal_generated.h"

	struct marshal_cmd_base
	{
	/**
	* Type of command. See enum marshal_dispatch_cmd_id.
	*/
	uint16_t cmd_id;

	/**
	* Size of command, in multiples of 4 bytes, including cmd_base.
	*/
	uint16_t cmd_size;
	};

	typedef void (_mesa_unmarshal_func)(struct gl_context ctx, const void *cmd);
	extern const _mesa_unmarshal_func _mesa_unmarshal_dispatch[NUM_DISPATCH_CMD];

	static inline void *
	_mesa_glthread_allocate_command(struct gl_context *ctx,
	uint16_t cmd_id,
	int size)
	{
	struct glthread_state *glthread = &ctx->GLThread;
	struct glthread_batch *next = glthread->next_batch;
	struct marshal_cmd_base *cmd_base;

	if (unlikely(next->used + size > MARSHAL_MAX_CMD_SIZE)) {
	_mesa_glthread_flush_batch(ctx);
	next = glthread->next_batch;
	}

	const int aligned_size = align(size, 8);
	cmd_base = (struct marshal_cmd_base *)&next->buffer[next->used];
	next->used += aligned_size;
	cmd_base->cmd_id = cmd_id;
	cmd_base->cmd_size = aligned_size;
	return cmd_base;
	}

	/**
	* Instead of conditionally handling marshaling immediate index data in draw
	* calls (deprecated and removed in GL core), we just disable threading.
	*/
	static inline bool
	_mesa_glthread_has_non_vbo_vertices_or_indices(const struct gl_context *ctx)
	{
	const struct glthread_state *glthread = &ctx->GLThread;
	struct glthread_vao *vao = glthread->CurrentVAO;

	return ctx->API != API_OPENGL_CORE &&
	(vao->CurrentElementBufferName == 0 \|\|
	(vao->UserPointerMask & vao->BufferEnabled));
	}

	static inline bool
	_mesa_glthread_has_non_vbo_vertices(const struct gl_context *ctx)
	{
	const struct glthread_state *glthread = &ctx->GLThread;
	const struct glthread_vao *vao = glthread->CurrentVAO;

	return ctx->API != API_OPENGL_CORE &&
	(vao->UserPointerMask & vao->BufferEnabled);
	}

	static inline bool
	_mesa_glthread_has_non_vbo_vertices_or_indirect(const struct gl_context *ctx)
	{
	const struct glthread_state *glthread = &ctx->GLThread;
	const struct glthread_vao *vao = glthread->CurrentVAO;

	return ctx->API != API_OPENGL_CORE &&
	(glthread->CurrentDrawIndirectBufferName == 0 \|\|
	(vao->UserPointerMask & vao->BufferEnabled));
	}

	static inline bool
	_mesa_glthread_has_non_vbo_vertices_or_indices_or_indirect(const struct gl_context *ctx)
	{
	const struct glthread_state *glthread = &ctx->GLThread;
	struct glthread_vao *vao = glthread->CurrentVAO;

	return ctx->API != API_OPENGL_CORE &&
	(glthread->CurrentDrawIndirectBufferName == 0 \|\|
	vao->CurrentElementBufferName == 0 \|\|
	(vao->UserPointerMask & vao->BufferEnabled));
	}


	struct _glapi_table *
	_mesa_create_marshal_table(const struct gl_context *ctx);

	static inline unsigned
	_mesa_buffer_enum_to_count(GLenum buffer)
	{
	switch (buffer) {
	case GL_COLOR:
	return 4;
	case GL_DEPTH_STENCIL:
	return 2;
	case GL_STENCIL:
	case GL_DEPTH:
	return 1;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_tex_param_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_TEXTURE_MIN_FILTER:
	case GL_TEXTURE_MAG_FILTER:
	case GL_TEXTURE_WRAP_S:
	case GL_TEXTURE_WRAP_T:
	case GL_TEXTURE_WRAP_R:
	case GL_TEXTURE_BASE_LEVEL:
	case GL_TEXTURE_MAX_LEVEL:
	case GL_GENERATE_MIPMAP_SGIS:
	case GL_TEXTURE_COMPARE_MODE_ARB:
	case GL_TEXTURE_COMPARE_FUNC_ARB:
	case GL_DEPTH_TEXTURE_MODE_ARB:
	case GL_DEPTH_STENCIL_TEXTURE_MODE:
	case GL_TEXTURE_SRGB_DECODE_EXT:
	case GL_TEXTURE_CUBE_MAP_SEAMLESS:
	case GL_TEXTURE_SWIZZLE_R:
	case GL_TEXTURE_SWIZZLE_G:
	case GL_TEXTURE_SWIZZLE_B:
	case GL_TEXTURE_SWIZZLE_A:
	case GL_TEXTURE_MIN_LOD:
	case GL_TEXTURE_MAX_LOD:
	case GL_TEXTURE_PRIORITY:
	case GL_TEXTURE_MAX_ANISOTROPY_EXT:
	case GL_TEXTURE_LOD_BIAS:
	case GL_TEXTURE_TILING_EXT:
	return 1;
	case GL_TEXTURE_CROP_RECT_OES:
	case GL_TEXTURE_SWIZZLE_RGBA:
	case GL_TEXTURE_BORDER_COLOR:
	return 4;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_fog_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_FOG_MODE:
	case GL_FOG_DENSITY:
	case GL_FOG_START:
	case GL_FOG_END:
	case GL_FOG_INDEX:
	case GL_FOG_COORDINATE_SOURCE_EXT:
	case GL_FOG_DISTANCE_MODE_NV:
	return 1;
	case GL_FOG_COLOR:
	return 4;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_light_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_AMBIENT:
	case GL_DIFFUSE:
	case GL_SPECULAR:
	case GL_POSITION:
	return 4;
	case GL_SPOT_DIRECTION:
	return 3;
	case GL_SPOT_EXPONENT:
	case GL_SPOT_CUTOFF:
	case GL_CONSTANT_ATTENUATION:
	case GL_LINEAR_ATTENUATION:
	case GL_QUADRATIC_ATTENUATION:
	return 1;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_light_model_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_LIGHT_MODEL_AMBIENT:
	return 4;
	case GL_LIGHT_MODEL_LOCAL_VIEWER:
	case GL_LIGHT_MODEL_TWO_SIDE:
	case GL_LIGHT_MODEL_COLOR_CONTROL:
	return 1;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_texenv_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_TEXTURE_ENV_MODE:
	case GL_COMBINE_RGB:
	case GL_COMBINE_ALPHA:
	case GL_SOURCE0_RGB:
	case GL_SOURCE1_RGB:
	case GL_SOURCE2_RGB:
	case GL_SOURCE3_RGB_NV:
	case GL_SOURCE0_ALPHA:
	case GL_SOURCE1_ALPHA:
	case GL_SOURCE2_ALPHA:
	case GL_SOURCE3_ALPHA_NV:
	case GL_OPERAND0_RGB:
	case GL_OPERAND1_RGB:
	case GL_OPERAND2_RGB:
	case GL_OPERAND3_RGB_NV:
	case GL_OPERAND0_ALPHA:
	case GL_OPERAND1_ALPHA:
	case GL_OPERAND2_ALPHA:
	case GL_OPERAND3_ALPHA_NV:
	case GL_RGB_SCALE:
	case GL_ALPHA_SCALE:
	case GL_TEXTURE_LOD_BIAS_EXT:
	case GL_COORD_REPLACE_NV:
	return 1;
	case GL_TEXTURE_ENV_COLOR:
	return 4;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_texgen_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_TEXTURE_GEN_MODE:
	return 1;
	case GL_OBJECT_PLANE:
	case GL_EYE_PLANE:
	return 4;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_material_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_EMISSION:
	case GL_AMBIENT:
	case GL_DIFFUSE:
	case GL_SPECULAR:
	case GL_AMBIENT_AND_DIFFUSE:
	return 4;
	case GL_COLOR_INDEXES:
	return 3;
	case GL_SHININESS:
	return 1;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_point_param_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_DISTANCE_ATTENUATION_EXT:
	return 3;
	case GL_POINT_SIZE_MIN_EXT:
	case GL_POINT_SIZE_MAX_EXT:
	case GL_POINT_FADE_THRESHOLD_SIZE_EXT:
	case GL_POINT_SPRITE_R_MODE_NV:
	case GL_POINT_SPRITE_COORD_ORIGIN:
	return 1;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_calllists_enum_to_count(GLenum type)
	{
	switch (type) {
	case GL_BYTE:
	case GL_UNSIGNED_BYTE:
	return 1;
	case GL_SHORT:
	case GL_UNSIGNED_SHORT:
	case GL_2_BYTES:
	return 2;
	case GL_3_BYTES:
	return 3;
	case GL_INT:
	case GL_UNSIGNED_INT:
	case GL_FLOAT:
	case GL_4_BYTES:
	return 4;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_patch_param_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_PATCH_DEFAULT_OUTER_LEVEL:
	return 4;
	case GL_PATCH_DEFAULT_INNER_LEVEL:
	return 2;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_memobj_enum_to_count(GLenum pname)
	{
	switch (pname) {
	case GL_DEDICATED_MEMORY_OBJECT_EXT:
	return 1;
	default:
	return 0;
	}
	}

	static inline unsigned
	_mesa_semaphore_enum_to_count(GLenum pname)
	{
	switch (pname) {
	/* EXT_semaphore and EXT_semaphore_fd define no parameters */
	default:
	return 0;
	}
	}

	static inline gl_vert_attrib
	_mesa_array_to_attrib(struct gl_context *ctx, GLenum array)
	{
	switch (array) {
	case GL_VERTEX_ARRAY:
	return VERT_ATTRIB_POS;
	case GL_NORMAL_ARRAY:
	return VERT_ATTRIB_NORMAL;
	case GL_COLOR_ARRAY:
	return VERT_ATTRIB_COLOR0;
	case GL_INDEX_ARRAY:
	return VERT_ATTRIB_COLOR_INDEX;
	case GL_TEXTURE_COORD_ARRAY:
	return VERT_ATTRIB_TEX(ctx->GLThread.ClientActiveTexture);
	case GL_EDGE_FLAG_ARRAY:
	return VERT_ATTRIB_EDGEFLAG;
	case GL_FOG_COORDINATE_ARRAY:
	return VERT_ATTRIB_FOG;
	case GL_SECONDARY_COLOR_ARRAY:
	return VERT_ATTRIB_COLOR1;
	case GL_POINT_SIZE_ARRAY_OES:
	return VERT_ATTRIB_POINT_SIZE;
	case GL_PRIMITIVE_RESTART_NV:
	return VERT_ATTRIB_PRIMITIVE_RESTART_NV;
	default:
	if (array >= GL_TEXTURE0 && array <= GL_TEXTURE7)
	return VERT_ATTRIB_TEX(array - GL_TEXTURE0);
	return VERT_ATTRIB_MAX;
	}
	}

	#endif /* MARSHAL_H */