src/mesa/state_tracker/st_context.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef ST_CONTEXT_H
  29 #define ST_CONTEXT_H
  30
  31 #include "main/mtypes.h"
  32 #include "pipe/p_state.h"
  33 #include "state_tracker/st_api.h"
  34 #include "main/fbobject.h"
  35
  36 struct bitmap_cache;
  37 struct dd_function_table;
  38 struct draw_context;
  39 struct draw_stage;
  40 struct gen_mipmap_state;
  41 struct st_context;
  42 struct st_fragment_program;
  43 struct u_upload_mgr;
  44
  45
  46 #define ST_NEW_MESA                    (1 << 0) /* Mesa state has changed */
  47 #define ST_NEW_FRAGMENT_PROGRAM        (1 << 1)
  48 #define ST_NEW_VERTEX_PROGRAM          (1 << 2)
  49 #define ST_NEW_FRAMEBUFFER             (1 << 3)
  50 /* gap, re-use it */
  51 #define ST_NEW_GEOMETRY_PROGRAM        (1 << 5)
  52 #define ST_NEW_VERTEX_ARRAYS           (1 << 6)
  53 #define ST_NEW_RASTERIZER              (1 << 7)
  54 #define ST_NEW_UNIFORM_BUFFER          (1 << 8)
  55
  56
  57 struct st_state_flags {
  58    GLuint mesa;
  59    uint64_t st;
  60 };
  61
  62 struct st_tracked_state {
  63    const char *name;
  64    struct st_state_flags dirty;
  65    void (*update)( struct st_context *st );
  66 };
  67
  68
  69
  70 struct st_context
  71 {
  72    struct st_context_iface iface;
  73
  74    struct gl_context *ctx;
  75
  76    struct pipe_context *pipe;
  77
  78    struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader;
  79
  80    struct draw_context *draw;  /**< For selection/feedback/rastpos only */
  81    struct draw_stage *feedback_stage;  /**< For GL_FEEDBACK rendermode */
  82    struct draw_stage *selection_stage;  /**< For GL_SELECT rendermode */
  83    struct draw_stage *rastpos_stage;  /**< For glRasterPos */
  84    GLboolean clamp_frag_color_in_shader;
  85    GLboolean clamp_vert_color_in_shader;
  86    boolean has_stencil_export; /**< can do shader stencil export? */
  87    boolean has_time_elapsed;
  88    boolean has_shader_model3;
  89    boolean has_etc1;
  90    boolean prefer_blit_based_texture_transfer;
  91
  92    boolean needs_texcoord_semantic;
  93    boolean apply_texture_swizzle_to_border_color;
  94
  95    /* On old libGL's for linux we need to invalidate the drawables
  96     * on glViewpport calls, this is set via a option.
  97     */
  98    boolean invalidate_on_gl_viewport;
  99
 100    boolean vertex_array_out_of_memory;
 101
 102    /* Some state is contained in constant objects.
 103     * Other state is just parameter values.
 104     */
 105    struct {
 106       struct pipe_blend_state               blend;
 107       struct pipe_depth_stencil_alpha_state depth_stencil;
 108       struct pipe_rasterizer_state          rasterizer;
 109       struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 110       GLuint num_samplers[PIPE_SHADER_TYPES];
 111       struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 112       GLuint num_sampler_views[PIPE_SHADER_TYPES];
 113       struct pipe_clip_state clip;
 114       struct {
 115          void *ptr;
 116          unsigned size;
 117       } constants[PIPE_SHADER_TYPES];
 118       struct pipe_framebuffer_state framebuffer;
 119       struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS];
 120       struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS];
 121       unsigned sample_mask;
 122
 123       GLuint poly_stipple[32];  /**< In OpenGL's bottom-to-top order */
 124
 125       GLuint fb_orientation;
 126    } state;
 127
 128    char vendor[100];
 129    char renderer[100];
 130
 131    struct st_state_flags dirty;
 132
 133    GLboolean missing_textures;
 134    GLboolean vertdata_edgeflags;
 135    GLboolean edgeflag_culls_prims;
 136
 137    /** Mapping from VARYING_SLOT_x to post-transformed vertex slot */
 138    const GLuint *vertex_result_to_slot;
 139
 140    struct st_vertex_program *vp;    /**< Currently bound vertex program */
 141    struct st_fragment_program *fp;  /**< Currently bound fragment program */
 142    struct st_geometry_program *gp;  /**< Currently bound geometry program */
 143
 144    struct st_vp_variant *vp_variant;
 145    struct st_fp_variant *fp_variant;
 146    struct st_gp_variant *gp_variant;
 147
 148    struct gl_texture_object *default_texture;
 149
 150    struct {
 151       struct gl_program_cache *cache;
 152       struct st_fragment_program *program;  /**< cur pixel transfer prog */
 153       GLuint xfer_prog_sn;  /**< pixel xfer program serial no. */
 154       GLuint user_prog_sn;  /**< user fragment program serial no. */
 155       struct st_fragment_program *combined_prog;
 156       GLuint combined_prog_sn;
 157       struct pipe_resource *pixelmap_texture;
 158       struct pipe_sampler_view *pixelmap_sampler_view;
 159       boolean pixelmap_enabled;  /**< use the pixelmap texture? */
 160    } pixel_xfer;
 161
 162    /** for glBitmap */
 163    struct {
 164       struct pipe_rasterizer_state rasterizer;
 165       struct pipe_sampler_state samplers[2];
 166       enum pipe_format tex_format;
 167       void *vs;
 168       struct bitmap_cache *cache;
 169    } bitmap;
 170
 171    /** for glDraw/CopyPixels */
 172    struct {
 173       struct gl_fragment_program *shaders[4];
 174       void *vert_shaders[2];   /**< ureg shaders */
 175    } drawpix;
 176
 177    /** for glClear */
 178    struct {
 179       struct pipe_rasterizer_state raster;
 180       struct pipe_viewport_state viewport;
 181       void *vs;
 182       void *fs;
 183       void *vs_layered;
 184       void *gs_layered;
 185    } clear;
 186
 187    /** used for anything using util_draw_vertex_buffer */
 188    struct pipe_vertex_element velems_util_draw[3];
 189
 190    void *passthrough_fs;  /**< simple pass-through frag shader */
 191
 192    enum pipe_texture_target internal_target;
 193
 194    struct cso_context *cso_context;
 195
 196    void *winsys_drawable_handle;
 197
 198    /* The number of vertex buffers from the last call of validate_arrays. */
 199    unsigned last_num_vbuffers;
 200
 201    int32_t draw_stamp;
 202    int32_t read_stamp;
 203
 204    struct st_config_options options;
 205 };
 206
 207
 208 /* Need this so that we can implement Mesa callbacks in this module.
 209  */
 210 static INLINE struct st_context *st_context(struct gl_context *ctx)
 211 {
 212    return ctx->st;
 213 }
 214
 215
 216 /**
 217  * Wrapper for struct gl_framebuffer.
 218  * This is an opaque type to the outside world.
 219  */
 220 struct st_framebuffer
 221 {
 222    struct gl_framebuffer Base;
 223    void *Private;
 224
 225    struct st_framebuffer_iface *iface;
 226    enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
 227    unsigned num_statts;
 228    int32_t stamp;
 229    int32_t iface_stamp;
 230 };
 231
 232
 233 extern void st_init_driver_functions(struct dd_function_table *functions);
 234
 235 void st_invalidate_state(struct gl_context * ctx, GLuint new_state);
 236
 237
 238
 239 #define Y_0_TOP 1
 240 #define Y_0_BOTTOM 2
 241
 242 static INLINE GLuint
 243 st_fb_orientation(const struct gl_framebuffer *fb)
 244 {
 245    if (fb && _mesa_is_winsys_fbo(fb)) {
 246       /* Drawing into a window (on-screen buffer).
 247        *
 248        * Negate Y scale to flip image vertically.
 249        * The NDC Y coords prior to viewport transformation are in the range
 250        * [y=-1=bottom, y=1=top]
 251        * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
 252        * H is the window height.
 253        * Use the viewport transformation to invert Y.
 254        */
 255       return Y_0_TOP;
 256    }
 257    else {
 258       /* Drawing into user-created FBO (very likely a texture).
 259        *
 260        * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
 261        */
 262       return Y_0_BOTTOM;
 263    }
 264 }
 265
 266
 267 /** clear-alloc a struct-sized object, with casting */
 268 #define ST_CALLOC_STRUCT(T)   (struct T *) calloc(1, sizeof(struct T))
 269
 270
 271 extern struct st_context *
 272 st_create_context(gl_api api, struct pipe_context *pipe,
 273                   const struct gl_config *visual,
 274                   struct st_context *share,
 275                   const struct st_config_options *options);
 276
 277 extern void
 278 st_destroy_context(struct st_context *st);
 279
 280
 281 #endif