| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. |
| * |
| * 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 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. |
| * |
| * Authors: |
| * Keith Whitwell <keithw@vmware.com> |
| */ |
| |
| #ifndef _TNL_H |
| #define _TNL_H |
| |
| #include "main/glheader.h" |
| |
| struct gl_context; |
| struct gl_program; |
| struct gl_buffer_object; |
| struct gl_transform_feedback_object; |
| struct dd_function_table; |
| |
| |
| /* These are the public-access functions exported from tnl. (A few |
| * more are currently hooked into dispatch directly by the module |
| * itself.) |
| */ |
| extern GLboolean |
| _tnl_CreateContext( struct gl_context *ctx ); |
| |
| extern void |
| _tnl_DestroyContext( struct gl_context *ctx ); |
| |
| extern void |
| _tnl_InvalidateState( struct gl_context *ctx, GLuint new_state ); |
| |
| extern void |
| _tnl_init_driver_draw_function(struct dd_function_table *functions); |
| |
| /* Functions to revive the tnl module after being unhooked from |
| * dispatch and/or driver callbacks. |
| */ |
| |
| extern void |
| _tnl_wakeup( struct gl_context *ctx ); |
| |
| /* Driver configuration options: |
| */ |
| extern void |
| _tnl_need_projected_coords( struct gl_context *ctx, GLboolean flag ); |
| |
| |
| /** |
| * Vertex array information which is derived from gl_array_attributes |
| * and gl_vertex_buffer_binding information. Used by the TNL module and |
| * device drivers. |
| */ |
| struct tnl_vertex_array |
| { |
| /** Vertex attribute array */ |
| const struct gl_array_attributes *VertexAttrib; |
| /** Vertex buffer binding */ |
| const struct gl_vertex_buffer_binding *BufferBinding; |
| }; |
| |
| |
| extern const struct tnl_vertex_array* |
| _tnl_bind_inputs( struct gl_context *ctx ); |
| |
| |
| /* Control whether T&L does per-vertex fog |
| */ |
| extern void |
| _tnl_allow_vertex_fog( struct gl_context *ctx, GLboolean value ); |
| |
| extern void |
| _tnl_allow_pixel_fog( struct gl_context *ctx, GLboolean value ); |
| |
| extern GLboolean |
| _tnl_program_string(struct gl_context *ctx, GLenum target, struct gl_program *program); |
| |
| struct _mesa_prim; |
| struct _mesa_index_buffer; |
| |
| void |
| _tnl_draw_prims(struct gl_context *ctx, |
| const struct tnl_vertex_array *arrays, |
| const struct _mesa_prim *prim, |
| GLuint nr_prims, |
| const struct _mesa_index_buffer *ib, |
| GLboolean index_bounds_valid, |
| GLuint min_index, |
| GLuint max_index, |
| GLuint num_instances, |
| GLuint base_instance); |
| |
| void |
| _tnl_draw(struct gl_context *ctx, |
| const struct _mesa_prim *prim, GLuint nr_prims, |
| const struct _mesa_index_buffer *ib, |
| GLboolean index_bounds_valid, GLuint min_index, GLuint max_index, |
| GLuint num_instances, GLuint base_instance, |
| struct gl_transform_feedback_object *tfb_vertcount, unsigned stream); |
| |
| extern void |
| _tnl_RasterPos(struct gl_context *ctx, const GLfloat vObj[4]); |
| |
| extern void |
| _tnl_validate_shine_tables( struct gl_context *ctx ); |
| |
| |
| |
| /** |
| * For indirect array drawing: |
| * |
| * typedef struct { |
| * GLuint count; |
| * GLuint primCount; |
| * GLuint first; |
| * GLuint baseInstance; // in GL 4.2 and later, must be zero otherwise |
| * } DrawArraysIndirectCommand; |
| * |
| * For indirect indexed drawing: |
| * |
| * typedef struct { |
| * GLuint count; |
| * GLuint primCount; |
| * GLuint firstIndex; |
| * GLint baseVertex; |
| * GLuint baseInstance; // in GL 4.2 and later, must be zero otherwise |
| * } DrawElementsIndirectCommand; |
| */ |
| |
| |
| /** |
| * Draw a number of primitives. |
| * \param prims array [nr_prims] describing what to draw (prim type, |
| * vertex count, first index, instance count, etc). |
| * \param arrays array of vertex arrays for draw |
| * \param ib index buffer for indexed drawing, NULL for array drawing |
| * \param index_bounds_valid are min_index and max_index valid? |
| * \param min_index lowest vertex index used |
| * \param max_index highest vertex index used |
| * \param tfb_vertcount if non-null, indicates which transform feedback |
| * object has the vertex count. |
| * \param tfb_stream If called via DrawTransformFeedbackStream, specifies the |
| * vertex stream buffer from which to get the vertex count. |
| * \param indirect If any prims are indirect, this specifies the buffer |
| * to find the "DrawArrays/ElementsIndirectCommand" data. |
| * This may be deprecated in the future |
| */ |
| typedef void (*tnl_draw_func)(struct gl_context *ctx, |
| const struct tnl_vertex_array* arrays, |
| const struct _mesa_prim *prims, |
| GLuint nr_prims, |
| const struct _mesa_index_buffer *ib, |
| GLboolean index_bounds_valid, |
| GLuint min_index, |
| GLuint max_index, |
| GLuint num_instances, |
| GLuint base_instance); |
| |
| |
| /* Utility function to cope with various constraints on tnl modules or |
| * hardware. This can be used to split an incoming set of arrays and |
| * primitives against the following constraints: |
| * - Maximum number of indices in index buffer. |
| * - Maximum number of vertices referenced by index buffer. |
| * - Maximum hardware vertex buffer size. |
| */ |
| struct split_limits |
| { |
| GLuint max_verts; |
| GLuint max_indices; |
| GLuint max_vb_size; /* bytes */ |
| }; |
| |
| void |
| _tnl_split_prims(struct gl_context *ctx, |
| const struct tnl_vertex_array *arrays, |
| const struct _mesa_prim *prim, |
| GLuint nr_prims, |
| const struct _mesa_index_buffer *ib, |
| GLuint min_index, |
| GLuint max_index, |
| GLuint num_instances, |
| GLuint base_instance, |
| tnl_draw_func draw, |
| const struct split_limits *limits); |
| |
| |
| #endif |