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