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 *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    irbStencil = intel_get_renderbuffer(fb, BUFFER_STENCIL);
 107
 108    /* Do this here, not core Mesa, since this function is called from
 109     * many places within the driver.
 110     */
 111    if (ctx->NewState & _NEW_BUFFERS) {
 112       /* this updates the DrawBuffer->_NumColorDrawBuffers fields, etc */
 113       _mesa_update_framebuffer(ctx);
 114       /* this updates the DrawBuffer's Width/Height if it's a FBO */
 115       _mesa_update_draw_buffer_bounds(ctx);
 116    }
 117
 118    if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
 119       /* this may occur when we're called by glBindFrameBuffer() during
 120        * the process of someone setting up renderbuffers, etc.
 121        */
 122       /*_mesa_debug(ctx, "DrawBuffer: incomplete user FBO\n");*/
 123       return;
 124    }
 125
 126    /* Check some stencil invariants.  These should probably be in
 127     * emit_depthbuffer().
 128     */
 129    if (irbStencil && irbStencil->mt) {
 130       if (!intel->has_separate_stencil)
 131          assert(irbStencil->Base.Format == MESA_FORMAT_S8_Z24);
 132       if (fb_has_hiz || intel->must_use_separate_stencil)
 133          assert(irbStencil->Base.Format == MESA_FORMAT_S8);
 134       if (irbStencil->Base.Format == MESA_FORMAT_S8)
 135          assert(intel->has_separate_stencil);
 136    }
 137
 138    /* Mesa's Stencil._Enabled field is updated when
 139     * _NEW_BUFFERS | _NEW_STENCIL, but i965 code assumes that the value
 140     * only changes with _NEW_STENCIL (which seems sensible).  So flag it
 141     * here since this is the _NEW_BUFFERS path.
 142     */
 143    intel->NewGLState |= (_NEW_DEPTH | _NEW_STENCIL);
 144
 145    /* The driver uses this in places that need to look up
 146     * renderbuffers' buffer objects.
 147     */
 148    intel->NewGLState |= _NEW_BUFFERS;
 149
 150    /* update viewport/scissor since it depends on window size */
 151    intel->NewGLState |= _NEW_VIEWPORT | _NEW_SCISSOR;
 152
 153    /* Update culling direction which changes depending on the
 154     * orientation of the buffer:
 155     */
 156    intel->NewGLState |= _NEW_POLYGON;
 157 }
 158
 159 /**
 160  * called from intel_batchbuffer_flush and children before sending a
 161  * batchbuffer off.
 162  */
 163 static void brw_finish_batch(struct intel_context *intel)
 164 {
 165    struct brw_context *brw = brw_context(&intel->ctx);
 166    brw_emit_query_end(brw);
 167
 168    if (brw->curbe.curbe_bo) {
 169       drm_intel_gem_bo_unmap_gtt(brw->curbe.curbe_bo);
 170       drm_intel_bo_unreference(brw->curbe.curbe_bo);
 171       brw->curbe.curbe_bo = NULL;
 172    }
 173 }
 174
 175
 176 /**
 177  * called from intelFlushBatchLocked
 178  */
 179 static void brw_new_batch( struct intel_context *intel )
 180 {
 181    struct brw_context *brw = brw_context(&intel->ctx);
 182
 183    /* Mark all context state as needing to be re-emitted.
 184     * This is probably not as severe as on 915, since almost all of our state
 185     * is just in referenced buffers.
 186     */
 187    brw->state.dirty.brw |= BRW_NEW_CONTEXT | BRW_NEW_BATCH;
 188
 189    /* Assume that the last command before the start of our batch was a
 190     * primitive, for safety.
 191     */
 192    intel->batch.need_workaround_flush = true;
 193
 194    brw->state_batch_count = 0;
 195
 196    brw->vb.nr_current_buffers = 0;
 197    brw->ib.type = -1;
 198
 199    /* Mark that the current program cache BO has been used by the GPU.
 200     * It will be reallocated if we need to put new programs in for the
 201     * next batch.
 202     */
 203    brw->cache.bo_used_by_gpu = true;
 204 }
 205
 206 static void brw_invalidate_state( struct intel_context *intel, GLuint new_state )
 207 {
 208    /* nothing */
 209 }
 210
 211 /**
 212  * \see intel_context.vtbl.is_hiz_depth_format
 213  */
 214 static bool brw_is_hiz_depth_format(struct intel_context *intel,
 215                                     gl_format format)
 216 {
 217    /* In the future, this will support Z_FLOAT32. */
 218    return intel->has_hiz && (format == MESA_FORMAT_X8_Z24);
 219 }
 220
 221 void brwInitVtbl( struct brw_context *brw )
 222 {
 223    brw->intel.vtbl.check_vertex_size = 0;
 224    brw->intel.vtbl.emit_state = 0;
 225    brw->intel.vtbl.reduced_primitive_state = 0;
 226    brw->intel.vtbl.render_start = 0;
 227    brw->intel.vtbl.update_texture_state = 0;
 228
 229    brw->intel.vtbl.invalidate_state = brw_invalidate_state;
 230    brw->intel.vtbl.new_batch = brw_new_batch;
 231    brw->intel.vtbl.finish_batch = brw_finish_batch;
 232    brw->intel.vtbl.destroy = brw_destroy_context;
 233    brw->intel.vtbl.update_draw_buffer = brw_update_draw_buffer;
 234    brw->intel.vtbl.debug_batch = brw_debug_batch;
 235    brw->intel.vtbl.render_target_supported = brw_render_target_supported;
 236    brw->intel.vtbl.is_hiz_depth_format = brw_is_hiz_depth_format;
 237
 238    if (brw->intel.has_hiz) {
 239       brw->intel.vtbl.resolve_depth_slice = gen6_resolve_depth_slice;
 240       brw->intel.vtbl.resolve_hiz_slice = gen6_resolve_hiz_slice;
 241    }
 242
 243    if (brw->intel.gen >= 7) {
 244       gen7_init_vtable_surface_functions(brw);
 245    } else if (brw->intel.gen >= 4) {
 246       gen4_init_vtable_surface_functions(brw);
 247    }
 248 }