src/mesa/drivers/dri/i965/brw_vtbl.c

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a 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, sublicense, 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
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 **********************************************************************/
  27
  28 /*
  29  * Authors:
  30  *   Keith Whitwell <keith@tungstengraphics.com>
  31  */
  32
  33 #include "main/glheader.h"
  34 #include "main/mtypes.h"
  35 #include "main/imports.h"
  36 #include "main/macros.h"
  37 #include "main/colormac.h"
  38 #include "main/renderbuffer.h"
  39 #include "main/framebuffer.h"
  40
  41 #include "intel_batchbuffer.h"
  42 #include "intel_regions.h"
  43 #include "intel_fbo.h"
  44
  45 #include "brw_context.h"
  46 #include "brw_defines.h"
  47 #include "brw_state.h"
  48 #include "brw_draw.h"
  49 #include "brw_vs.h"
  50 #include "brw_wm.h"
  51
  52 #include "gen6_hiz.h"
  53
  54 #include "glsl/ralloc.h"
  55
  56 static void
  57 dri_bo_release(drm_intel_bo **bo)
  58 {
  59    drm_intel_bo_unreference(*bo);
  60    *bo = NULL;
  61 }
  62
  63
  64 /**
  65  * called from intelDestroyContext()
  66  */
  67 static void brw_destroy_context( struct intel_context *intel )
  68 {
  69    struct brw_context *brw = brw_context(&intel->ctx);
  70
  71    brw_destroy_state(brw);
  72    brw_draw_destroy( brw );
  73    ralloc_free(brw->wm.compile_data);
  74
  75    dri_bo_release(&brw->curbe.curbe_bo);
  76    dri_bo_release(&brw->vs.const_bo);
  77    dri_bo_release(&brw->wm.const_bo);
  78
  79    free(brw->curbe.last_buf);
  80    free(brw->curbe.next_buf);
  81 }
  82
  83 /**
  84  * Update the hardware state for drawing into a window or framebuffer object.
  85  *
  86  * Called by glDrawBuffer, glBindFramebufferEXT, MakeCurrent, and other
  87  * places within the driver.
  88  *
  89  * Basically, this needs to be called any time the current framebuffer
  90  * changes, the renderbuffers change, or we need to draw into different
  91  * color buffers.
  92  */
  93 static void
  94 brw_update_draw_buffer(struct intel_context *intel)
  95 {
  96    struct gl_context *ctx = &intel->ctx;
  97    struct gl_framebuffer *fb = ctx->DrawBuffer;
  98
  99    if (!fb) {
 100       /* this can happen during the initial context initialization */
 101       return;
 102    }
 103
 104    /* Do this here, not core Mesa, since this function is called from
 105     * many places within the driver.
 106     */
 107    if (ctx->NewState & _NEW_BUFFERS) {
 108       /* this updates the DrawBuffer->_NumColorDrawBuffers fields, etc */
 109       _mesa_update_framebuffer(ctx);
 110       /* this updates the DrawBuffer's Width/Height if it's a FBO */
 111       _mesa_update_draw_buffer_bounds(ctx);
 112    }
 113
 114    if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
 115       /* this may occur when we're called by glBindFrameBuffer() during
 116        * the process of someone setting up renderbuffers, etc.
 117        */
 118       /*_mesa_debug(ctx, "DrawBuffer: incomplete user FBO\n");*/
 119       return;
 120    }
 121
 122    /* Mesa's Stencil._Enabled field is updated when
 123     * _NEW_BUFFERS | _NEW_STENCIL, but i965 code assumes that the value
 124     * only changes with _NEW_STENCIL (which seems sensible).  So flag it
 125     * here since this is the _NEW_BUFFERS path.
 126     */
 127    intel->NewGLState |= (_NEW_DEPTH | _NEW_STENCIL);
 128
 129    /* The driver uses this in places that need to look up
 130     * renderbuffers' buffer objects.
 131     */
 132    intel->NewGLState |= _NEW_BUFFERS;
 133
 134    /* update viewport/scissor since it depends on window size */
 135    intel->NewGLState |= _NEW_VIEWPORT | _NEW_SCISSOR;
 136
 137    /* Update culling direction which changes depending on the
 138     * orientation of the buffer:
 139     */
 140    intel->NewGLState |= _NEW_POLYGON;
 141 }
 142
 143 /**
 144  * called from intel_batchbuffer_flush and children before sending a
 145  * batchbuffer off.
 146  */
 147 static void brw_finish_batch(struct intel_context *intel)
 148 {
 149    struct brw_context *brw = brw_context(&intel->ctx);
 150    brw_emit_query_end(brw);
 151
 152    if (brw->curbe.curbe_bo) {
 153       drm_intel_gem_bo_unmap_gtt(brw->curbe.curbe_bo);
 154       drm_intel_bo_unreference(brw->curbe.curbe_bo);
 155       brw->curbe.curbe_bo = NULL;
 156    }
 157 }
 158
 159
 160 /**
 161  * called from intelFlushBatchLocked
 162  */
 163 static void brw_new_batch( struct intel_context *intel )
 164 {
 165    struct brw_context *brw = brw_context(&intel->ctx);
 166
 167    /* Mark all context state as needing to be re-emitted.
 168     * This is probably not as severe as on 915, since almost all of our state
 169     * is just in referenced buffers.
 170     */
 171    brw->state.dirty.brw |= BRW_NEW_CONTEXT | BRW_NEW_BATCH;
 172
 173    /* Assume that the last command before the start of our batch was a
 174     * primitive, for safety.
 175     */
 176    intel->batch.need_workaround_flush = true;
 177
 178    brw->state_batch_count = 0;
 179
 180    brw->vb.nr_current_buffers = 0;
 181    brw->ib.type = -1;
 182
 183    /* Mark that the current program cache BO has been used by the GPU.
 184     * It will be reallocated if we need to put new programs in for the
 185     * next batch.
 186     */
 187    brw->cache.bo_used_by_gpu = true;
 188 }
 189
 190 static void brw_invalidate_state( struct intel_context *intel, GLuint new_state )
 191 {
 192    /* nothing */
 193 }
 194
 195 /**
 196  * \see intel_context.vtbl.is_hiz_depth_format
 197  */
 198 static bool brw_is_hiz_depth_format(struct intel_context *intel,
 199                                     gl_format format)
 200 {
 201    if (!intel->has_hiz)
 202       return false;
 203
 204    switch (format) {
 205    case MESA_FORMAT_Z32_FLOAT:
 206    case MESA_FORMAT_Z32_FLOAT_X24S8:
 207    case MESA_FORMAT_X8_Z24:
 208    case MESA_FORMAT_S8_Z24:
 209       return true;
 210    default:
 211       return false;
 212    }
 213 }
 214
 215 void brwInitVtbl( struct brw_context *brw )
 216 {
 217    brw->intel.vtbl.check_vertex_size = 0;
 218    brw->intel.vtbl.emit_state = 0;
 219    brw->intel.vtbl.reduced_primitive_state = 0;
 220    brw->intel.vtbl.render_start = 0;
 221    brw->intel.vtbl.update_texture_state = 0;
 222
 223    brw->intel.vtbl.invalidate_state = brw_invalidate_state;
 224    brw->intel.vtbl.new_batch = brw_new_batch;
 225    brw->intel.vtbl.finish_batch = brw_finish_batch;
 226    brw->intel.vtbl.destroy = brw_destroy_context;
 227    brw->intel.vtbl.update_draw_buffer = brw_update_draw_buffer;
 228    brw->intel.vtbl.debug_batch = brw_debug_batch;
 229    brw->intel.vtbl.render_target_supported = brw_render_target_supported;
 230    brw->intel.vtbl.is_hiz_depth_format = brw_is_hiz_depth_format;
 231
 232    if (brw->intel.has_hiz) {
 233       brw->intel.vtbl.resolve_depth_slice = gen6_resolve_depth_slice;
 234       brw->intel.vtbl.resolve_hiz_slice = gen6_resolve_hiz_slice;
 235    }
 236
 237    if (brw->intel.gen >= 7) {
 238       gen7_init_vtable_surface_functions(brw);
 239    } else if (brw->intel.gen >= 4) {
 240       gen4_init_vtable_surface_functions(brw);
 241    }
 242 }