2f245bce42
Some of these functions probably should be driver-private. Note: intel_buffer_object is in p_state.h and should be fixed/removed. There are just a few i915 dependencies in intel_region.c
322 lines
8.9 KiB
C
322 lines
8.9 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* Abstract graphics pipe state objects.
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*
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* Basic notes:
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* 1. Want compact representations, so we use bitfields.
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* 2. Put bitfields before other (GLfloat) fields.
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*/
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#ifndef PIPE_STATE_H
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#define PIPE_STATE_H
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#include "mtypes.h"
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/**
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* Implementation limits
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*/
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#define PIPE_MAX_SAMPLERS 8
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#define PIPE_MAX_CLIP_PLANES 6
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#define PIPE_MAX_CONSTANT 32
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#define PIPE_ATTRIB_MAX 32
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#define PIPE_MAX_COLOR_BUFS 8
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/* fwd decl */
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struct pipe_surface;
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/***
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*** State objects
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***/
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/**
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* Primitive (point/line/tri) setup info
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*/
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struct pipe_setup_state
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{
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GLuint flatshade:1;
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GLuint light_twoside:1;
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GLuint front_winding:2; /**< PIPE_WINDING_x */
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GLuint cull_mode:2; /**< PIPE_WINDING_x */
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GLuint fill_cw:2; /**< PIPE_POLYGON_MODE_x */
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GLuint fill_ccw:2; /**< PIPE_POLYGON_MODE_x */
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GLuint offset_cw:1;
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GLuint offset_ccw:1;
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GLuint scissor:1;
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GLuint poly_smooth:1;
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GLuint poly_stipple_enable:1;
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GLuint line_smooth:1;
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GLuint line_stipple_enable:1;
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GLuint point_smooth:1;
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GLuint multisample:1; /* XXX maybe more ms state in future */
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GLubyte line_stipple_factor; /**< [1..256] actually */
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GLushort line_stipple_pattern;
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GLfloat line_width;
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GLfloat point_size; /**< used when no per-vertex size */
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GLfloat offset_units;
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GLfloat offset_scale;
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};
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struct pipe_poly_stipple {
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GLuint stipple[32];
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};
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struct pipe_viewport_state {
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GLfloat scale[4];
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GLfloat translate[4];
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};
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struct pipe_scissor_state {
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GLshort minx;
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GLshort miny;
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GLshort maxx;
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GLshort maxy;
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};
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struct pipe_clip_state {
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GLfloat ucp[PIPE_MAX_CLIP_PLANES][4];
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GLuint nr;
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};
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struct pipe_constant_buffer {
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GLfloat constant[PIPE_MAX_CONSTANT][4];
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GLuint nr_constants;
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};
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struct pipe_fs_state {
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GLbitfield inputs_read; /* FRAG_ATTRIB_* */
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const struct tgsi_token *tokens;
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struct pipe_constant_buffer *constants; /* XXX temporary? */
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};
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struct pipe_depth_state
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{
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GLuint enabled:1; /**< depth test enabled? */
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GLuint writemask:1; /**< allow depth buffer writes? */
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GLuint func:3; /**< depth test func (PIPE_FUNC_x) */
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GLuint occlusion_count:1; /**< XXX move this elsewhere? */
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GLfloat clear; /**< Clear value in [0,1] (XXX correct place?) */
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};
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struct pipe_alpha_test_state {
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GLuint enabled:1;
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GLuint func:3; /**< PIPE_FUNC_x */
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GLfloat ref; /**< reference value */
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};
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struct pipe_blend_state {
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GLuint blend_enable:1;
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GLuint rgb_func:3; /**< PIPE_BLEND_x */
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GLuint rgb_src_factor:5; /**< PIPE_BLENDFACTOR_x */
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GLuint rgb_dst_factor:5; /**< PIPE_BLENDFACTOR_x */
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GLuint alpha_func:3; /**< PIPE_BLEND_x */
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GLuint alpha_src_factor:5; /**< PIPE_BLENDFACTOR_x */
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GLuint alpha_dst_factor:5; /**< PIPE_BLENDFACTOR_x */
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GLuint logicop_enable:1;
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GLuint logicop_func:4; /**< PIPE_LOGICOP_x */
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GLuint colormask:4; /**< bitmask of PIPE_MASK_R/G/B/A */
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GLuint dither:1;
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};
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struct pipe_blend_color {
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GLfloat color[4];
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};
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struct pipe_clear_color_state
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{
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GLfloat color[4];
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};
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struct pipe_stencil_state {
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GLuint front_enabled:1;
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GLuint front_func:3; /**< PIPE_FUNC_x */
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GLuint front_fail_op:3; /**< PIPE_STENCIL_OP_x */
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GLuint front_zpass_op:3; /**< PIPE_STENCIL_OP_x */
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GLuint front_zfail_op:3; /**< PIPE_STENCIL_OP_x */
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GLuint back_enabled:1;
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GLuint back_func:3; /**< PIPE_FUNC_x */
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GLuint back_fail_op:3; /**< PIPE_STENCIL_OP_x */
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GLuint back_zpass_op:3; /**< PIPE_STENCIL_OP_x */
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GLuint back_zfail_op:3; /**< PIPE_STENCIL_OP_x */
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GLubyte ref_value[2]; /**< [0] = front, [1] = back */
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GLubyte value_mask[2];
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GLubyte write_mask[2];
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GLubyte clear_value;
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};
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struct pipe_framebuffer_state
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{
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/** multiple colorbuffers for multiple render targets */
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GLuint num_cbufs;
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struct pipe_surface *cbufs[PIPE_MAX_COLOR_BUFS];
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struct pipe_surface *zbuf; /**< Z buffer */
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struct pipe_surface *sbuf; /**< Stencil buffer */
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struct pipe_surface *abuf; /**< Accum buffer */
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};
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/**
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* Texture sampler state.
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*/
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struct pipe_sampler_state
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{
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GLuint wrap_s:3; /**< PIPE_TEX_WRAP_x */
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GLuint wrap_t:3; /**< PIPE_TEX_WRAP_x */
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GLuint wrap_r:3; /**< PIPE_TEX_WRAP_x */
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GLuint min_filter:3; /**< PIPE_TEX_FILTER_x */
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GLuint mag_filter:1; /**< PIPE_TEX_FILTER_LINEAR or _NEAREST */
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GLuint compare:1; /**< shadow/depth compare enabled? */
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GLenum compare_mode:1; /**< PIPE_TEX_COMPARE_x */
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GLenum compare_func:3; /**< PIPE_FUNC_x */
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GLfloat shadow_ambient; /**< shadow test fail color/intensity */
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GLfloat min_lod;
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GLfloat max_lod;
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GLfloat lod_bias;
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#if 0 /* need these? */
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GLint BaseLevel; /**< min mipmap level, OpenGL 1.2 */
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GLint MaxLevel; /**< max mipmap level, OpenGL 1.2 */
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GLfloat border_color[4];
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#endif
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GLfloat max_anisotropy;
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};
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/***
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*** Non-state Objects
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***/
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/**
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* A mappable buffer (vertex data, pixel data, etc)
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* XXX replace with "intel_region".
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*/
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struct pipe_buffer
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{
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void (*buffer_data)(struct pipe_buffer *pb, GLuint size, const void *src);
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void (*buffer_sub_data)(struct pipe_buffer *pb, GLuint offset, GLuint size,
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const void *src);
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void *(*map)(struct pipe_buffer *pb, GLuint access_mode);
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void (*unmap)(struct pipe_buffer *pb);
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GLubyte *ptr; /**< address, only valid while mapped */
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GLuint mode; /**< PIPE_MAP_x, only valid while mapped */
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};
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/**
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* 2D surface.
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* May be a renderbuffer, texture mipmap level, etc.
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*/
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struct pipe_surface
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{
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struct pipe_buffer buffer; /**< surfaces can be mapped */
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GLuint format:5; /**< PIPE_FORMAT_x */
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GLuint width, height;
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GLint stride, cpp;
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GLubyte *ptr; /**< only valid while mapped, may not equal buffer->ptr */
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void *rb; /**< Ptr back to renderbuffer (temporary?) */
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void (*resize)(struct pipe_surface *ps, GLuint width, GLuint height);
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};
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struct _DriBufferObject;
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struct intel_buffer_object;
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struct pipe_region
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{
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struct _DriBufferObject *buffer; /**< buffer manager's buffer ID */
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GLuint refcount; /**< Reference count for region */
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GLuint cpp; /**< bytes per pixel */
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GLuint pitch; /**< in pixels */
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GLuint height; /**< in pixels */
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GLubyte *map; /**< only non-NULL when region is actually mapped */
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GLuint map_refcount; /**< Reference count for mapping */
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GLuint draw_offset; /**< Offset of drawing address within the region */
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struct intel_buffer_object *pbo; /* zero-copy uploads */
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};
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/**
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* Texture object.
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* Mipmap levels, cube faces, 3D slices can be accessed as surfaces.
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*/
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struct pipe_texture_object
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{
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GLuint type:2; /**< PIPE_TEXTURE_x */
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GLuint format:5; /**< PIPE_FORMAT_x */
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GLuint width:13; /**< 13 bits = 8K max size */
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GLuint height:13;
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GLuint depth:13;
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GLuint mipmapped:1;
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/** to access a 1D or 2D texture object as a surface */
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struct pipe_surface *(*get_2d_surface)(struct pipe_texture_object *pto,
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GLuint level);
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/** to access a 3D texture object as a surface */
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struct pipe_surface *(*get_3d_surface)(struct pipe_texture_object *pto,
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GLuint level, GLuint slice);
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/** to access a cube texture object as a surface */
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struct pipe_surface *(*get_cube_surface)(struct pipe_texture_object *pto,
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GLuint face, GLuint level);
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/** when finished with surface: */
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void (*release_surface)(struct pipe_texture_object *pto,
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struct pipe_surface *ps);
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};
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#endif
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