2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
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:
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.
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.
26 **********************************************************************/
30 * Keith Whitwell <keith@tungstengraphics.com>
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"
41 #include "intel_batchbuffer.h"
42 #include "intel_regions.h"
43 #include "intel_fbo.h"
45 #include "brw_context.h"
46 #include "brw_defines.h"
47 #include "brw_state.h"
52 #include "../glsl/ralloc.h"
55 dri_bo_release(drm_intel_bo **bo)
57 drm_intel_bo_unreference(*bo);
63 * called from intelDestroyContext()
65 static void brw_destroy_context( struct intel_context *intel )
67 struct brw_context *brw = brw_context(&intel->ctx);
69 brw_destroy_state(brw);
70 brw_draw_destroy( brw );
71 brw_clear_validated_bos(brw);
72 ralloc_free(brw->wm.compile_data);
74 dri_bo_release(&brw->curbe.curbe_bo);
75 dri_bo_release(&brw->vs.const_bo);
76 dri_bo_release(&brw->wm.const_bo);
78 free(brw->curbe.last_buf);
79 free(brw->curbe.next_buf);
83 * Update the hardware state for drawing into a window or framebuffer object.
85 * Called by glDrawBuffer, glBindFramebufferEXT, MakeCurrent, and other
86 * places within the driver.
88 * Basically, this needs to be called any time the current framebuffer
89 * changes, the renderbuffers change, or we need to draw into different
93 brw_update_draw_buffer(struct intel_context *intel)
95 struct gl_context *ctx = &intel->ctx;
96 struct gl_framebuffer *fb = ctx->DrawBuffer;
97 struct intel_region *colorRegions[MAX_DRAW_BUFFERS], *depthRegion = NULL;
98 struct intel_renderbuffer *irbDepth = NULL, *irbStencil = NULL;
99 bool fb_has_hiz = intel_framebuffer_has_hiz(fb);
102 /* this can happen during the initial context initialization */
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.
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;
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;
128 /* Do this here, not core Mesa, since this function is called from
129 * many places within the driver.
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);
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.
142 /*_mesa_debug(ctx, "DrawBuffer: incomplete user FBO\n");*/
146 /* How many color buffers are we drawing into?
148 * If there are zero buffers or the buffer is too big, don't configure any
149 * regions for hardware drawing. We'll fallback to software below. Not
150 * having regions set makes some of the software fallback paths faster.
152 if ((fb->Width > ctx->Const.MaxRenderbufferSize)
153 || (fb->Height > ctx->Const.MaxRenderbufferSize)
154 || (fb->_NumColorDrawBuffers == 0)) {
156 colorRegions[0] = NULL;
158 else if (fb->_NumColorDrawBuffers > 1) {
160 struct intel_renderbuffer *irb;
162 for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
163 irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
164 colorRegions[i] = irb ? irb->region : NULL;
168 /* Get the intel_renderbuffer for the single colorbuffer we're drawing
172 /* drawing to window system buffer */
173 if (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT)
174 colorRegions[0] = intel_get_rb_region(fb, BUFFER_FRONT_LEFT);
176 colorRegions[0] = intel_get_rb_region(fb, BUFFER_BACK_LEFT);
179 /* drawing to user-created FBO */
180 struct intel_renderbuffer *irb;
181 irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
182 colorRegions[0] = (irb && irb->region) ? irb->region : NULL;
186 /* Check for depth fallback. */
187 if (irbDepth && irbDepth->region) {
188 assert(!fb_has_hiz || irbDepth->Base.Format != MESA_FORMAT_S8_Z24);
189 depthRegion = irbDepth->region;
190 } else if (irbDepth && !irbDepth->region) {
192 } else { /* !irbDepth */
193 /* No fallback is needed because there is no depth buffer. */
197 /* Check for stencil fallback. */
198 if (irbStencil && irbStencil->region) {
199 if (!intel->has_separate_stencil)
200 assert(irbStencil->Base.Format == MESA_FORMAT_S8_Z24);
201 if (fb_has_hiz || intel->must_use_separate_stencil)
202 assert(irbStencil->Base.Format == MESA_FORMAT_S8);
203 if (irbStencil->Base.Format == MESA_FORMAT_S8)
204 assert(intel->has_separate_stencil);
207 /* If we have a (packed) stencil buffer attached but no depth buffer,
208 * we still need to set up the shared depth/stencil state so we can use it.
210 if (depthRegion == NULL && irbStencil && irbStencil->region
211 && irbStencil->Base.Format == MESA_FORMAT_S8_Z24) {
212 depthRegion = irbStencil->region;
216 * Update depth and stencil test state
218 if (ctx->Driver.Enable) {
219 ctx->Driver.Enable(ctx, GL_DEPTH_TEST,
220 (ctx->Depth.Test && fb->Visual.depthBits > 0));
221 ctx->Driver.Enable(ctx, GL_STENCIL_TEST,
222 (ctx->Stencil.Enabled && fb->Visual.stencilBits > 0));
225 /* Mesa's Stencil._Enabled field is updated when
226 * _NEW_BUFFERS | _NEW_STENCIL, but i965 code assumes that the value
227 * only changes with _NEW_STENCIL (which seems sensible). So flag it
228 * here since this is the _NEW_BUFFERS path.
230 intel->NewGLState |= (_NEW_DEPTH | _NEW_STENCIL);
233 intel->NewGLState |= _NEW_BUFFERS;
235 /* update viewport since it depends on window size */
237 intelCalcViewport(ctx);
239 intel->NewGLState |= _NEW_VIEWPORT;
241 /* Set state we know depends on drawable parameters:
243 if (ctx->Driver.Scissor)
244 ctx->Driver.Scissor(ctx, ctx->Scissor.X, ctx->Scissor.Y,
245 ctx->Scissor.Width, ctx->Scissor.Height);
246 intel->NewGLState |= _NEW_SCISSOR;
248 if (ctx->Driver.DepthRange)
249 ctx->Driver.DepthRange(ctx,
253 /* Update culling direction which changes depending on the
254 * orientation of the buffer:
256 if (ctx->Driver.FrontFace)
257 ctx->Driver.FrontFace(ctx, ctx->Polygon.FrontFace);
259 intel->NewGLState |= _NEW_POLYGON;
263 * called from intel_batchbuffer_flush and children before sending a
266 static void brw_finish_batch(struct intel_context *intel)
268 struct brw_context *brw = brw_context(&intel->ctx);
269 brw_emit_query_end(brw);
271 if (brw->curbe.curbe_bo) {
272 drm_intel_gem_bo_unmap_gtt(brw->curbe.curbe_bo);
273 drm_intel_bo_unreference(brw->curbe.curbe_bo);
274 brw->curbe.curbe_bo = NULL;
280 * called from intelFlushBatchLocked
282 static void brw_new_batch( struct intel_context *intel )
284 struct brw_context *brw = brw_context(&intel->ctx);
286 /* Mark all context state as needing to be re-emitted.
287 * This is probably not as severe as on 915, since almost all of our state
288 * is just in referenced buffers.
290 brw->state.dirty.brw |= BRW_NEW_CONTEXT | BRW_NEW_BATCH;
292 /* Assume that the last command before the start of our batch was a
293 * primitive, for safety.
295 intel->batch.need_workaround_flush = true;
297 brw->vb.nr_current_buffers = 0;
299 /* Mark that the current program cache BO has been used by the GPU.
300 * It will be reallocated if we need to put new programs in for the
303 brw->cache.bo_used_by_gpu = true;
306 static void brw_invalidate_state( struct intel_context *intel, GLuint new_state )
312 * \see intel_context.vtbl.is_hiz_depth_format
314 static bool brw_is_hiz_depth_format(struct intel_context *intel,
317 /* In the future, this will support Z_FLOAT32. */
318 return intel->has_hiz && (format == MESA_FORMAT_X8_Z24);
322 void brwInitVtbl( struct brw_context *brw )
324 brw->intel.vtbl.check_vertex_size = 0;
325 brw->intel.vtbl.emit_state = 0;
326 brw->intel.vtbl.reduced_primitive_state = 0;
327 brw->intel.vtbl.render_start = 0;
328 brw->intel.vtbl.update_texture_state = 0;
330 brw->intel.vtbl.invalidate_state = brw_invalidate_state;
331 brw->intel.vtbl.new_batch = brw_new_batch;
332 brw->intel.vtbl.finish_batch = brw_finish_batch;
333 brw->intel.vtbl.destroy = brw_destroy_context;
334 brw->intel.vtbl.update_draw_buffer = brw_update_draw_buffer;
335 brw->intel.vtbl.debug_batch = brw_debug_batch;
336 brw->intel.vtbl.render_target_supported = brw_render_target_supported;
337 brw->intel.vtbl.is_hiz_depth_format = brw_is_hiz_depth_format;