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    brw_clear_validated_bos(brw);
  74    ralloc_free(brw->wm.compile_data);
  75
  76    dri_bo_release(&brw->curbe.curbe_bo);
  77    dri_bo_release(&brw->vs.const_bo);
  78    dri_bo_release(&brw->wm.const_bo);
  79
  80    free(brw->curbe.last_buf);
  81    free(brw->curbe.next_buf);
  82 }
  83
  84 /**
  85  * Update the hardware state for drawing into a window or framebuffer object.
  86  *
  87  * Called by glDrawBuffer, glBindFramebufferEXT, MakeCurrent, and other
  88  * places within the driver.
  89  *
  90  * Basically, this needs to be called any time the current framebuffer
  91  * changes, the renderbuffers change, or we need to draw into different
  92  * color buffers.
  93  */
  94 static void
  95 brw_update_draw_buffer(struct intel_context *intel)
  96 {
  97    struct gl_context *ctx = &intel->ctx;
  98    struct gl_framebuffer *fb = ctx->DrawBuffer;
  99    struct intel_renderbuffer *irbDepth = NULL, *irbStencil = NULL;
 100    bool fb_has_hiz = intel_framebuffer_has_hiz(fb);
 101
 102    if (!fb) {
 103       /* this can happen during the initial context initialization */
 104       return;
 105    }
 106
 107    /*
 108     * If intel_context is using separate stencil, but the depth attachment
 109     * (gl_framebuffer.Attachment[BUFFER_DEPTH]) has a packed depth/stencil
 110     * format, then we must install the real depth buffer at fb->_DepthBuffer
 111     * and set fb->_DepthBuffer->Wrapped before calling _mesa_update_framebuffer.
 112     * Otherwise, _mesa_update_framebuffer will create and install a swras
 113     * depth wrapper instead.
 114     *
 115     * Ditto for stencil.
 116     */
 117    irbDepth = intel_get_renderbuffer(fb, BUFFER_DEPTH);
 118    if (irbDepth && irbDepth->Base.Format == MESA_FORMAT_X8_Z24) {
 119       _mesa_reference_renderbuffer(&fb->_DepthBuffer, &irbDepth->Base);
 120       irbDepth->Base.Wrapped = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
 121    }
 122
 123    irbStencil = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 124    if (irbStencil && irbStencil->Base.Format == MESA_FORMAT_S8) {
 125       _mesa_reference_renderbuffer(&fb->_StencilBuffer, &irbStencil->Base);
 126       irbStencil->Base.Wrapped = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
 127    }
 128
 129    /* Do this here, not core Mesa, since this function is called from
 130     * many places within the driver.
 131     */
 132    if (ctx->NewState & _NEW_BUFFERS) {
 133       /* this updates the DrawBuffer->_NumColorDrawBuffers fields, etc */
 134       _mesa_update_framebuffer(ctx);
 135       /* this updates the DrawBuffer's Width/Height if it's a FBO */
 136       _mesa_update_draw_buffer_bounds(ctx);
 137    }
 138
 139    if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
 140       /* this may occur when we're called by glBindFrameBuffer() during
 141        * the process of someone setting up renderbuffers, etc.
 142        */
 143       /*_mesa_debug(ctx, "DrawBuffer: incomplete user FBO\n");*/
 144       return;
 145    }
 146
 147    /* Check some stencil invariants.  These should probably be in
 148     * emit_depthbuffer().
 149     */
 150    if (irbStencil && irbStencil->region) {
 151       if (!intel->has_separate_stencil)
 152          assert(irbStencil->Base.Format == MESA_FORMAT_S8_Z24);
 153       if (fb_has_hiz || intel->must_use_separate_stencil)
 154          assert(irbStencil->Base.Format == MESA_FORMAT_S8);
 155       if (irbStencil->Base.Format == MESA_FORMAT_S8)
 156          assert(intel->has_separate_stencil);
 157    }
 158
 159    /* Mesa's Stencil._Enabled field is updated when
 160     * _NEW_BUFFERS | _NEW_STENCIL, but i965 code assumes that the value
 161     * only changes with _NEW_STENCIL (which seems sensible).  So flag it
 162     * here since this is the _NEW_BUFFERS path.
 163     */
 164    intel->NewGLState |= (_NEW_DEPTH | _NEW_STENCIL);
 165
 166    /* The driver uses this in places that need to look up
 167     * renderbuffers' buffer objects.
 168     */
 169    intel->NewGLState |= _NEW_BUFFERS;
 170
 171    /* update viewport/scissor since it depends on window size */
 172    intel->NewGLState |= _NEW_VIEWPORT | _NEW_SCISSOR;
 173
 174    /* Update culling direction which changes depending on the
 175     * orientation of the buffer:
 176     */
 177    intel->NewGLState |= _NEW_POLYGON;
 178 }
 179
 180 /**
 181  * called from intel_batchbuffer_flush and children before sending a
 182  * batchbuffer off.
 183  */
 184 static void brw_finish_batch(struct intel_context *intel)
 185 {
 186    struct brw_context *brw = brw_context(&intel->ctx);
 187    brw_emit_query_end(brw);
 188
 189    if (brw->curbe.curbe_bo) {
 190       drm_intel_gem_bo_unmap_gtt(brw->curbe.curbe_bo);
 191       drm_intel_bo_unreference(brw->curbe.curbe_bo);
 192       brw->curbe.curbe_bo = NULL;
 193    }
 194 }
 195
 196
 197 /**
 198  * called from intelFlushBatchLocked
 199  */
 200 static void brw_new_batch( struct intel_context *intel )
 201 {
 202    struct brw_context *brw = brw_context(&intel->ctx);
 203
 204    /* Mark all context state as needing to be re-emitted.
 205     * This is probably not as severe as on 915, since almost all of our state
 206     * is just in referenced buffers.
 207     */
 208    brw->state.dirty.brw |= BRW_NEW_CONTEXT | BRW_NEW_BATCH;
 209
 210    /* Assume that the last command before the start of our batch was a
 211     * primitive, for safety.
 212     */
 213    intel->batch.need_workaround_flush = true;
 214
 215    brw->state_batch_count = 0;
 216
 217    brw->vb.nr_current_buffers = 0;
 218    brw->ib.type = -1;
 219
 220    /* Mark that the current program cache BO has been used by the GPU.
 221     * It will be reallocated if we need to put new programs in for the
 222     * next batch.
 223     */
 224    brw->cache.bo_used_by_gpu = true;
 225 }
 226
 227 static void brw_invalidate_state( struct intel_context *intel, GLuint new_state )
 228 {
 229    /* nothing */
 230 }
 231
 232 /**
 233  * \see intel_context.vtbl.is_hiz_depth_format
 234  */
 235 static bool brw_is_hiz_depth_format(struct intel_context *intel,
 236                                     gl_format format)
 237 {
 238    /* In the future, this will support Z_FLOAT32. */
 239    return intel->has_hiz && (format == MESA_FORMAT_X8_Z24);
 240 }
 241
 242 static void brw_hiz_resolve_noop(struct intel_context *intel,
 243                                  struct intel_region *depth_region)
 244 {
 245    /* empty */
 246 }
 247
 248 void brwInitVtbl( struct brw_context *brw )
 249 {
 250    brw->intel.vtbl.check_vertex_size = 0;
 251    brw->intel.vtbl.emit_state = 0;
 252    brw->intel.vtbl.reduced_primitive_state = 0;
 253    brw->intel.vtbl.render_start = 0;
 254    brw->intel.vtbl.update_texture_state = 0;
 255
 256    brw->intel.vtbl.invalidate_state = brw_invalidate_state;
 257    brw->intel.vtbl.new_batch = brw_new_batch;
 258    brw->intel.vtbl.finish_batch = brw_finish_batch;
 259    brw->intel.vtbl.destroy = brw_destroy_context;
 260    brw->intel.vtbl.update_draw_buffer = brw_update_draw_buffer;
 261    brw->intel.vtbl.debug_batch = brw_debug_batch;
 262    brw->intel.vtbl.render_target_supported = brw_render_target_supported;
 263    brw->intel.vtbl.is_hiz_depth_format = brw_is_hiz_depth_format;
 264
 265    if (brw->intel.has_hiz) {
 266       brw->intel.vtbl.hiz_resolve_hizbuffer = gen6_hiz_resolve_hizbuffer;
 267       brw->intel.vtbl.hiz_resolve_depthbuffer = gen6_hiz_resolve_depthbuffer;
 268    } else {
 269       brw->intel.vtbl.hiz_resolve_hizbuffer = brw_hiz_resolve_noop;
 270       brw->intel.vtbl.hiz_resolve_depthbuffer = brw_hiz_resolve_noop;
 271    }
 272 }