[Mesa-dev] [PATCH 18/29] i965: Merge intel_context.c into brw_context.c.
Kenneth Graunke
kenneth at whitecape.org
Fri Sep 27 16:45:57 PDT 2013
There's no point in having two files for context functions. This patch
moves the code from intel_context.c into brw_context.c unmodified
(other than whitespace fixes).
Right now, this looks silly; future patches will merge functions and
tidy things up.
Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
---
src/mesa/drivers/dri/i965/Makefile.sources | 1 -
src/mesa/drivers/dri/i965/brw_context.c | 685 +++++++++++++++++++++++++++
src/mesa/drivers/dri/i965/intel_context.c | 729 -----------------------------
3 files changed, 685 insertions(+), 730 deletions(-)
delete mode 100644 src/mesa/drivers/dri/i965/intel_context.c
diff --git a/src/mesa/drivers/dri/i965/Makefile.sources b/src/mesa/drivers/dri/i965/Makefile.sources
index 292425d..7a7c791 100644
--- a/src/mesa/drivers/dri/i965/Makefile.sources
+++ b/src/mesa/drivers/dri/i965/Makefile.sources
@@ -7,7 +7,6 @@ i965_FILES = \
intel_blit.c \
intel_buffer_objects.c \
intel_buffers.c \
- intel_context.c \
intel_debug.c \
intel_extensions.c \
intel_fbo.c \
diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 92e5d9f..569e881 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -1,4 +1,5 @@
/*
+ Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
Copyright (C) Intel Corp. 2006. All Rights Reserved.
Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
develop this 3D driver.
@@ -32,6 +33,7 @@
#include "main/api_exec.h"
#include "main/context.h"
+#include "main/fbobject.h"
#include "main/imports.h"
#include "main/macros.h"
#include "main/points.h"
@@ -41,17 +43,27 @@
#include "vbo/vbo_context.h"
+#include "drivers/common/driverfuncs.h"
+#include "drivers/common/meta.h"
+#include "utils.h"
+
#include "brw_context.h"
#include "brw_defines.h"
#include "brw_draw.h"
#include "brw_state.h"
+#include "intel_batchbuffer.h"
+#include "intel_buffer_objects.h"
+#include "intel_buffers.h"
#include "intel_fbo.h"
#include "intel_mipmap_tree.h"
+#include "intel_pixel.h"
#include "intel_regions.h"
#include "intel_tex.h"
#include "intel_tex_obj.h"
+#include "swrast_setup/swrast_setup.h"
+#include "tnl/tnl.h"
#include "tnl/t_pipeline.h"
#include "glsl/ralloc.h"
@@ -83,6 +95,143 @@ brw_query_samples_for_format(struct gl_context *ctx, GLenum target,
}
}
+static const GLubyte *
+intelGetString(struct gl_context * ctx, GLenum name)
+{
+ const struct brw_context *const brw = brw_context(ctx);
+ const char *chipset;
+ static char buffer[128];
+
+ switch (name) {
+ case GL_VENDOR:
+ return (GLubyte *) "Intel Open Source Technology Center";
+ break;
+
+ case GL_RENDERER:
+ switch (brw->intelScreen->deviceID) {
+#undef CHIPSET
+#define CHIPSET(id, family, str) case id: chipset = str; break;
+#include "pci_ids/i965_pci_ids.h"
+ default:
+ chipset = "Unknown Intel Chipset";
+ break;
+ }
+
+ (void) driGetRendererString(buffer, chipset, 0);
+ return (GLubyte *) buffer;
+
+ default:
+ return NULL;
+ }
+}
+
+static void
+intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
+{
+ struct brw_context *brw = brw_context(ctx);
+ __DRIcontext *driContext = brw->driContext;
+
+ if (brw->saved_viewport)
+ brw->saved_viewport(ctx, x, y, w, h);
+
+ if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
+ dri2InvalidateDrawable(driContext->driDrawablePriv);
+ dri2InvalidateDrawable(driContext->driReadablePriv);
+ }
+}
+
+static void
+intelInvalidateState(struct gl_context * ctx, GLuint new_state)
+{
+ struct brw_context *brw = brw_context(ctx);
+
+ if (ctx->swrast_context)
+ _swrast_InvalidateState(ctx, new_state);
+ _vbo_InvalidateState(ctx, new_state);
+
+ brw->NewGLState |= new_state;
+}
+
+static void
+intel_flush_front(struct gl_context *ctx)
+{
+ struct brw_context *brw = brw_context(ctx);
+ __DRIcontext *driContext = brw->driContext;
+ __DRIdrawable *driDrawable = driContext->driDrawablePriv;
+ __DRIscreen *const screen = brw->intelScreen->driScrnPriv;
+
+ if (brw->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) {
+ if (screen->dri2.loader->flushFrontBuffer != NULL &&
+ driDrawable &&
+ driDrawable->loaderPrivate) {
+
+ /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
+ *
+ * This potentially resolves both front and back buffer. It
+ * is unnecessary to resolve the back, but harms nothing except
+ * performance. And no one cares about front-buffer render
+ * performance.
+ */
+ intel_resolve_for_dri2_flush(brw, driDrawable);
+ intel_batchbuffer_flush(brw);
+
+ screen->dri2.loader->flushFrontBuffer(driDrawable,
+ driDrawable->loaderPrivate);
+
+ /* We set the dirty bit in intel_prepare_render() if we're
+ * front buffer rendering once we get there.
+ */
+ brw->front_buffer_dirty = false;
+ }
+ }
+}
+
+static void
+intel_glFlush(struct gl_context *ctx)
+{
+ struct brw_context *brw = brw_context(ctx);
+
+ intel_batchbuffer_flush(brw);
+ intel_flush_front(ctx);
+ if (brw->is_front_buffer_rendering)
+ brw->need_throttle = true;
+}
+
+void
+intelFinish(struct gl_context * ctx)
+{
+ struct brw_context *brw = brw_context(ctx);
+
+ intel_glFlush(ctx);
+
+ if (brw->batch.last_bo)
+ drm_intel_bo_wait_rendering(brw->batch.last_bo);
+}
+
+
+
+void
+intelInitDriverFunctions(struct dd_function_table *functions)
+{
+ _mesa_init_driver_functions(functions);
+
+ functions->Flush = intel_glFlush;
+ functions->Finish = intelFinish;
+ functions->GetString = intelGetString;
+ functions->UpdateState = intelInvalidateState;
+
+ intelInitTextureFuncs(functions);
+ intelInitTextureImageFuncs(functions);
+ intelInitTextureSubImageFuncs(functions);
+ intelInitTextureCopyImageFuncs(functions);
+ intelInitClearFuncs(functions);
+ intelInitBufferFuncs(functions);
+ intelInitPixelFuncs(functions);
+ intelInitBufferObjectFuncs(functions);
+ intel_init_syncobj_functions(functions);
+ brw_init_object_purgeable_functions(functions);
+}
+
static void brwInitDriverFunctions(struct intel_screen *screen,
struct dd_function_table *functions)
{
@@ -488,3 +637,539 @@ brwCreateContext(int api,
return true;
}
+bool
+intelInitContext(struct brw_context *brw,
+ int api,
+ unsigned major_version,
+ unsigned minor_version,
+ const struct gl_config * mesaVis,
+ __DRIcontext * driContextPriv,
+ void *sharedContextPrivate,
+ struct dd_function_table *functions,
+ unsigned *dri_ctx_error)
+{
+ struct gl_context *ctx = &brw->ctx;
+
+ /* GLX uses DRI2 invalidate events to handle window resizing.
+ * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib),
+ * which doesn't provide a mechanism for snooping the event queues.
+ *
+ * So EGL still relies on viewport hacks to handle window resizing.
+ * This should go away with DRI3000.
+ */
+ if (!driContextPriv->driScreenPriv->dri2.useInvalidate) {
+ brw->saved_viewport = functions->Viewport;
+ functions->Viewport = intel_viewport;
+ }
+
+ /* Estimate the size of the mappable aperture into the GTT. There's an
+ * ioctl to get the whole GTT size, but not one to get the mappable subset.
+ * It turns out it's basically always 256MB, though some ancient hardware
+ * was smaller.
+ */
+ uint32_t gtt_size = 256 * 1024 * 1024;
+
+ /* We don't want to map two objects such that a memcpy between them would
+ * just fault one mapping in and then the other over and over forever. So
+ * we would need to divide the GTT size by 2. Additionally, some GTT is
+ * taken up by things like the framebuffer and the ringbuffer and such, so
+ * be more conservative.
+ */
+ brw->max_gtt_map_object_size = gtt_size / 4;
+
+ /* Initialize the software rasterizer and helper modules.
+ *
+ * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
+ * software fallbacks (which we have to support on legacy GL to do weird
+ * glDrawPixels(), glBitmap(), and other functions).
+ */
+ if (api != API_OPENGL_CORE && api != API_OPENGLES2) {
+ _swrast_CreateContext(ctx);
+ }
+
+ _vbo_CreateContext(ctx);
+ if (ctx->swrast_context) {
+ _tnl_CreateContext(ctx);
+ _swsetup_CreateContext(ctx);
+
+ /* Configure swrast to match hardware characteristics: */
+ _swrast_allow_pixel_fog(ctx, false);
+ _swrast_allow_vertex_fog(ctx, true);
+ }
+
+ _mesa_meta_init(ctx);
+
+ intelInitExtensions(ctx);
+
+ brw_process_intel_debug_variable(brw);
+
+ intel_batchbuffer_init(brw);
+
+ intel_fbo_init(brw);
+
+ return true;
+}
+
+void
+intelDestroyContext(__DRIcontext * driContextPriv)
+{
+ struct brw_context *brw =
+ (struct brw_context *) driContextPriv->driverPrivate;
+ struct gl_context *ctx = &brw->ctx;
+
+ assert(brw); /* should never be null */
+ if (brw) {
+ /* Dump a final BMP in case the application doesn't call SwapBuffers */
+ if (INTEL_DEBUG & DEBUG_AUB) {
+ intel_batchbuffer_flush(brw);
+ aub_dump_bmp(&brw->ctx);
+ }
+
+ _mesa_meta_free(&brw->ctx);
+
+ brw->vtbl.destroy(brw);
+
+ if (ctx->swrast_context) {
+ _swsetup_DestroyContext(&brw->ctx);
+ _tnl_DestroyContext(&brw->ctx);
+ }
+ _vbo_DestroyContext(&brw->ctx);
+
+ if (ctx->swrast_context)
+ _swrast_DestroyContext(&brw->ctx);
+
+ intel_batchbuffer_free(brw);
+
+ drm_intel_bo_unreference(brw->first_post_swapbuffers_batch);
+ brw->first_post_swapbuffers_batch = NULL;
+
+ driDestroyOptionCache(&brw->optionCache);
+
+ /* free the Mesa context */
+ _mesa_free_context_data(&brw->ctx);
+
+ ralloc_free(brw);
+ driContextPriv->driverPrivate = NULL;
+ }
+}
+
+GLboolean
+intelUnbindContext(__DRIcontext * driContextPriv)
+{
+ /* Unset current context and dispath table */
+ _mesa_make_current(NULL, NULL, NULL);
+
+ return true;
+}
+
+/**
+ * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
+ * on window system framebuffers.
+ *
+ * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
+ * your renderbuffer can do sRGB encode, and you can flip a switch that does
+ * sRGB encode if the renderbuffer can handle it. You can ask specifically
+ * for a visual where you're guaranteed to be capable, but it turns out that
+ * everyone just makes all their ARGB8888 visuals capable and doesn't offer
+ * incapable ones, becuase there's no difference between the two in resources
+ * used. Applications thus get built that accidentally rely on the default
+ * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
+ * great...
+ *
+ * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
+ * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
+ * So they removed the enable knob and made it "if the renderbuffer is sRGB
+ * capable, do sRGB encode". Then, for your window system renderbuffers, you
+ * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
+ * and get no sRGB encode (assuming that both kinds of visual are available).
+ * Thus our choice to support sRGB by default on our visuals for desktop would
+ * result in broken rendering of GLES apps that aren't expecting sRGB encode.
+ *
+ * Unfortunately, renderbuffer setup happens before a context is created. So
+ * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
+ * context (without an sRGB visual, though we don't have sRGB visuals exposed
+ * yet), we go turn that back off before anyone finds out.
+ */
+static void
+intel_gles3_srgb_workaround(struct brw_context *brw,
+ struct gl_framebuffer *fb)
+{
+ struct gl_context *ctx = &brw->ctx;
+
+ if (_mesa_is_desktop_gl(ctx) || !fb->Visual.sRGBCapable)
+ return;
+
+ /* Some day when we support the sRGB capable bit on visuals available for
+ * GLES, we'll need to respect that and not disable things here.
+ */
+ fb->Visual.sRGBCapable = false;
+ for (int i = 0; i < BUFFER_COUNT; i++) {
+ if (fb->Attachment[i].Renderbuffer &&
+ fb->Attachment[i].Renderbuffer->Format == MESA_FORMAT_SARGB8) {
+ fb->Attachment[i].Renderbuffer->Format = MESA_FORMAT_ARGB8888;
+ }
+ }
+}
+
+GLboolean
+intelMakeCurrent(__DRIcontext * driContextPriv,
+ __DRIdrawable * driDrawPriv,
+ __DRIdrawable * driReadPriv)
+{
+ struct brw_context *brw;
+ GET_CURRENT_CONTEXT(curCtx);
+
+ if (driContextPriv)
+ brw = (struct brw_context *) driContextPriv->driverPrivate;
+ else
+ brw = NULL;
+
+ /* According to the glXMakeCurrent() man page: "Pending commands to
+ * the previous context, if any, are flushed before it is released."
+ * But only flush if we're actually changing contexts.
+ */
+ if (brw_context(curCtx) && brw_context(curCtx) != brw) {
+ _mesa_flush(curCtx);
+ }
+
+ if (driContextPriv) {
+ struct gl_context *ctx = &brw->ctx;
+ struct gl_framebuffer *fb, *readFb;
+
+ if (driDrawPriv == NULL && driReadPriv == NULL) {
+ fb = _mesa_get_incomplete_framebuffer();
+ readFb = _mesa_get_incomplete_framebuffer();
+ } else {
+ fb = driDrawPriv->driverPrivate;
+ readFb = driReadPriv->driverPrivate;
+ driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
+ driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
+ }
+
+ /* The sRGB workaround changes the renderbuffer's format. We must change
+ * the format before the renderbuffer's miptree get's allocated, otherwise
+ * the formats of the renderbuffer and its miptree will differ.
+ */
+ intel_gles3_srgb_workaround(brw, fb);
+ intel_gles3_srgb_workaround(brw, readFb);
+
+ intel_prepare_render(brw);
+ _mesa_make_current(ctx, fb, readFb);
+ } else {
+ _mesa_make_current(NULL, NULL, NULL);
+ }
+
+ return true;
+}
+
+void
+intel_resolve_for_dri2_flush(struct brw_context *brw,
+ __DRIdrawable *drawable)
+{
+ if (brw->gen < 6) {
+ /* MSAA and fast color clear are not supported, so don't waste time
+ * checking whether a resolve is needed.
+ */
+ return;
+ }
+
+ struct gl_framebuffer *fb = drawable->driverPrivate;
+ struct intel_renderbuffer *rb;
+
+ /* Usually, only the back buffer will need to be downsampled. However,
+ * the front buffer will also need it if the user has rendered into it.
+ */
+ static const gl_buffer_index buffers[2] = {
+ BUFFER_BACK_LEFT,
+ BUFFER_FRONT_LEFT,
+ };
+
+ for (int i = 0; i < 2; ++i) {
+ rb = intel_get_renderbuffer(fb, buffers[i]);
+ if (rb == NULL || rb->mt == NULL)
+ continue;
+ if (rb->mt->num_samples <= 1)
+ intel_miptree_resolve_color(brw, rb->mt);
+ else
+ intel_miptree_downsample(brw, rb->mt);
+ }
+}
+
+static unsigned
+intel_bits_per_pixel(const struct intel_renderbuffer *rb)
+{
+ return _mesa_get_format_bytes(intel_rb_format(rb)) * 8;
+}
+
+static void
+intel_query_dri2_buffers(struct brw_context *brw,
+ __DRIdrawable *drawable,
+ __DRIbuffer **buffers,
+ int *count);
+
+static void
+intel_process_dri2_buffer(struct brw_context *brw,
+ __DRIdrawable *drawable,
+ __DRIbuffer *buffer,
+ struct intel_renderbuffer *rb,
+ const char *buffer_name);
+
+void
+intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
+{
+ struct gl_framebuffer *fb = drawable->driverPrivate;
+ struct intel_renderbuffer *rb;
+ struct brw_context *brw = context->driverPrivate;
+ __DRIbuffer *buffers = NULL;
+ int i, count;
+ const char *region_name;
+
+ /* Set this up front, so that in case our buffers get invalidated
+ * while we're getting new buffers, we don't clobber the stamp and
+ * thus ignore the invalidate. */
+ drawable->lastStamp = drawable->dri2.stamp;
+
+ if (unlikely(INTEL_DEBUG & DEBUG_DRI))
+ fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
+
+ intel_query_dri2_buffers(brw, drawable, &buffers, &count);
+
+ if (buffers == NULL)
+ return;
+
+ for (i = 0; i < count; i++) {
+ switch (buffers[i].attachment) {
+ case __DRI_BUFFER_FRONT_LEFT:
+ rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+ region_name = "dri2 front buffer";
+ break;
+
+ case __DRI_BUFFER_FAKE_FRONT_LEFT:
+ rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+ region_name = "dri2 fake front buffer";
+ break;
+
+ case __DRI_BUFFER_BACK_LEFT:
+ rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+ region_name = "dri2 back buffer";
+ break;
+
+ case __DRI_BUFFER_DEPTH:
+ case __DRI_BUFFER_HIZ:
+ case __DRI_BUFFER_DEPTH_STENCIL:
+ case __DRI_BUFFER_STENCIL:
+ case __DRI_BUFFER_ACCUM:
+ default:
+ fprintf(stderr,
+ "unhandled buffer attach event, attachment type %d\n",
+ buffers[i].attachment);
+ return;
+ }
+
+ intel_process_dri2_buffer(brw, drawable, &buffers[i], rb, region_name);
+ }
+
+ driUpdateFramebufferSize(&brw->ctx, drawable);
+}
+
+/**
+ * intel_prepare_render should be called anywhere that curent read/drawbuffer
+ * state is required.
+ */
+void
+intel_prepare_render(struct brw_context *brw)
+{
+ __DRIcontext *driContext = brw->driContext;
+ __DRIdrawable *drawable;
+
+ drawable = driContext->driDrawablePriv;
+ if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
+ if (drawable->lastStamp != drawable->dri2.stamp)
+ intel_update_renderbuffers(driContext, drawable);
+ driContext->dri2.draw_stamp = drawable->dri2.stamp;
+ }
+
+ drawable = driContext->driReadablePriv;
+ if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
+ if (drawable->lastStamp != drawable->dri2.stamp)
+ intel_update_renderbuffers(driContext, drawable);
+ driContext->dri2.read_stamp = drawable->dri2.stamp;
+ }
+
+ /* If we're currently rendering to the front buffer, the rendering
+ * that will happen next will probably dirty the front buffer. So
+ * mark it as dirty here.
+ */
+ if (brw->is_front_buffer_rendering)
+ brw->front_buffer_dirty = true;
+
+ /* Wait for the swapbuffers before the one we just emitted, so we
+ * don't get too many swaps outstanding for apps that are GPU-heavy
+ * but not CPU-heavy.
+ *
+ * We're using intelDRI2Flush (called from the loader before
+ * swapbuffer) and glFlush (for front buffer rendering) as the
+ * indicator that a frame is done and then throttle when we get
+ * here as we prepare to render the next frame. At this point for
+ * round trips for swap/copy and getting new buffers are done and
+ * we'll spend less time waiting on the GPU.
+ *
+ * Unfortunately, we don't have a handle to the batch containing
+ * the swap, and getting our hands on that doesn't seem worth it,
+ * so we just us the first batch we emitted after the last swap.
+ */
+ if (brw->need_throttle && brw->first_post_swapbuffers_batch) {
+ if (!brw->disable_throttling)
+ drm_intel_bo_wait_rendering(brw->first_post_swapbuffers_batch);
+ drm_intel_bo_unreference(brw->first_post_swapbuffers_batch);
+ brw->first_post_swapbuffers_batch = NULL;
+ brw->need_throttle = false;
+ }
+}
+
+/**
+ * \brief Query DRI2 to obtain a DRIdrawable's buffers.
+ *
+ * To determine which DRI buffers to request, examine the renderbuffers
+ * attached to the drawable's framebuffer. Then request the buffers with
+ * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \param drawable Drawable whose buffers are queried.
+ * \param buffers [out] List of buffers returned by DRI2 query.
+ * \param buffer_count [out] Number of buffers returned.
+ *
+ * \see intel_update_renderbuffers()
+ * \see DRI2GetBuffers()
+ * \see DRI2GetBuffersWithFormat()
+ */
+static void
+intel_query_dri2_buffers(struct brw_context *brw,
+ __DRIdrawable *drawable,
+ __DRIbuffer **buffers,
+ int *buffer_count)
+{
+ __DRIscreen *screen = brw->intelScreen->driScrnPriv;
+ struct gl_framebuffer *fb = drawable->driverPrivate;
+ int i = 0;
+ unsigned attachments[8];
+
+ struct intel_renderbuffer *front_rb;
+ struct intel_renderbuffer *back_rb;
+
+ front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+ back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+
+ memset(attachments, 0, sizeof(attachments));
+ if ((brw->is_front_buffer_rendering ||
+ brw->is_front_buffer_reading ||
+ !back_rb) && front_rb) {
+ /* If a fake front buffer is in use, then querying for
+ * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
+ * the real front buffer to the fake front buffer. So before doing the
+ * query, we need to make sure all the pending drawing has landed in the
+ * real front buffer.
+ */
+ intel_batchbuffer_flush(brw);
+ intel_flush_front(&brw->ctx);
+
+ attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
+ attachments[i++] = intel_bits_per_pixel(front_rb);
+ } else if (front_rb && brw->front_buffer_dirty) {
+ /* We have pending front buffer rendering, but we aren't querying for a
+ * front buffer. If the front buffer we have is a fake front buffer,
+ * the X server is going to throw it away when it processes the query.
+ * So before doing the query, make sure all the pending drawing has
+ * landed in the real front buffer.
+ */
+ intel_batchbuffer_flush(brw);
+ intel_flush_front(&brw->ctx);
+ }
+
+ if (back_rb) {
+ attachments[i++] = __DRI_BUFFER_BACK_LEFT;
+ attachments[i++] = intel_bits_per_pixel(back_rb);
+ }
+
+ assert(i <= ARRAY_SIZE(attachments));
+
+ *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
+ &drawable->w,
+ &drawable->h,
+ attachments, i / 2,
+ buffer_count,
+ drawable->loaderPrivate);
+}
+
+/**
+ * \brief Assign a DRI buffer's DRM region to a renderbuffer.
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \par Note:
+ * DRI buffers whose attachment point is DRI2BufferStencil or
+ * DRI2BufferDepthStencil are handled as special cases.
+ *
+ * \param buffer_name is a human readable name, such as "dri2 front buffer",
+ * that is passed to intel_region_alloc_for_handle().
+ *
+ * \see intel_update_renderbuffers()
+ * \see intel_region_alloc_for_handle()
+ */
+static void
+intel_process_dri2_buffer(struct brw_context *brw,
+ __DRIdrawable *drawable,
+ __DRIbuffer *buffer,
+ struct intel_renderbuffer *rb,
+ const char *buffer_name)
+{
+ struct intel_region *region = NULL;
+
+ if (!rb)
+ return;
+
+ unsigned num_samples = rb->Base.Base.NumSamples;
+
+ /* We try to avoid closing and reopening the same BO name, because the first
+ * use of a mapping of the buffer involves a bunch of page faulting which is
+ * moderately expensive.
+ */
+ if (num_samples == 0) {
+ if (rb->mt &&
+ rb->mt->region &&
+ rb->mt->region->name == buffer->name)
+ return;
+ } else {
+ if (rb->mt &&
+ rb->mt->singlesample_mt &&
+ rb->mt->singlesample_mt->region &&
+ rb->mt->singlesample_mt->region->name == buffer->name)
+ return;
+ }
+
+ if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
+ fprintf(stderr,
+ "attaching buffer %d, at %d, cpp %d, pitch %d\n",
+ buffer->name, buffer->attachment,
+ buffer->cpp, buffer->pitch);
+ }
+
+ intel_miptree_release(&rb->mt);
+ region = intel_region_alloc_for_handle(brw->intelScreen,
+ buffer->cpp,
+ drawable->w,
+ drawable->h,
+ buffer->pitch,
+ buffer->name,
+ buffer_name);
+ if (!region)
+ return;
+
+ rb->mt = intel_miptree_create_for_dri2_buffer(brw,
+ buffer->attachment,
+ intel_rb_format(rb),
+ num_samples,
+ region);
+ intel_region_release(®ion);
+}
diff --git a/src/mesa/drivers/dri/i965/intel_context.c b/src/mesa/drivers/dri/i965/intel_context.c
deleted file mode 100644
index 8a48e63..0000000
--- a/src/mesa/drivers/dri/i965/intel_context.c
+++ /dev/null
@@ -1,729 +0,0 @@
-/**************************************************************************
- *
- * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-
-#include "main/glheader.h"
-#include "main/context.h"
-#include "main/extensions.h"
-#include "main/fbobject.h"
-#include "main/framebuffer.h"
-#include "main/imports.h"
-#include "main/renderbuffer.h"
-
-#include "swrast/swrast.h"
-#include "swrast_setup/swrast_setup.h"
-#include "tnl/tnl.h"
-#include "drivers/common/driverfuncs.h"
-#include "drivers/common/meta.h"
-
-#include "intel_chipset.h"
-#include "intel_buffers.h"
-#include "intel_tex.h"
-#include "intel_batchbuffer.h"
-#include "intel_pixel.h"
-#include "intel_regions.h"
-#include "intel_buffer_objects.h"
-#include "intel_fbo.h"
-#include "intel_bufmgr.h"
-#include "intel_screen.h"
-#include "intel_mipmap_tree.h"
-
-#include "utils.h"
-#include "../glsl/ralloc.h"
-
-static const GLubyte *
-intelGetString(struct gl_context * ctx, GLenum name)
-{
- const struct brw_context *const brw = brw_context(ctx);
- const char *chipset;
- static char buffer[128];
-
- switch (name) {
- case GL_VENDOR:
- return (GLubyte *) "Intel Open Source Technology Center";
- break;
-
- case GL_RENDERER:
- switch (brw->intelScreen->deviceID) {
-#undef CHIPSET
-#define CHIPSET(id, family, str) case id: chipset = str; break;
-#include "pci_ids/i965_pci_ids.h"
- default:
- chipset = "Unknown Intel Chipset";
- break;
- }
-
- (void) driGetRendererString(buffer, chipset, 0);
- return (GLubyte *) buffer;
-
- default:
- return NULL;
- }
-}
-
-void
-intel_resolve_for_dri2_flush(struct brw_context *brw,
- __DRIdrawable *drawable)
-{
- if (brw->gen < 6) {
- /* MSAA and fast color clear are not supported, so don't waste time
- * checking whether a resolve is needed.
- */
- return;
- }
-
- struct gl_framebuffer *fb = drawable->driverPrivate;
- struct intel_renderbuffer *rb;
-
- /* Usually, only the back buffer will need to be downsampled. However,
- * the front buffer will also need it if the user has rendered into it.
- */
- static const gl_buffer_index buffers[2] = {
- BUFFER_BACK_LEFT,
- BUFFER_FRONT_LEFT,
- };
-
- for (int i = 0; i < 2; ++i) {
- rb = intel_get_renderbuffer(fb, buffers[i]);
- if (rb == NULL || rb->mt == NULL)
- continue;
- if (rb->mt->num_samples <= 1)
- intel_miptree_resolve_color(brw, rb->mt);
- else
- intel_miptree_downsample(brw, rb->mt);
- }
-}
-
-static void
-intel_flush_front(struct gl_context *ctx)
-{
- struct brw_context *brw = brw_context(ctx);
- __DRIcontext *driContext = brw->driContext;
- __DRIdrawable *driDrawable = driContext->driDrawablePriv;
- __DRIscreen *const screen = brw->intelScreen->driScrnPriv;
-
- if (brw->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) {
- if (screen->dri2.loader->flushFrontBuffer != NULL &&
- driDrawable &&
- driDrawable->loaderPrivate) {
-
- /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
- *
- * This potentially resolves both front and back buffer. It
- * is unnecessary to resolve the back, but harms nothing except
- * performance. And no one cares about front-buffer render
- * performance.
- */
- intel_resolve_for_dri2_flush(brw, driDrawable);
- intel_batchbuffer_flush(brw);
-
- screen->dri2.loader->flushFrontBuffer(driDrawable,
- driDrawable->loaderPrivate);
-
- /* We set the dirty bit in intel_prepare_render() if we're
- * front buffer rendering once we get there.
- */
- brw->front_buffer_dirty = false;
- }
- }
-}
-
-static unsigned
-intel_bits_per_pixel(const struct intel_renderbuffer *rb)
-{
- return _mesa_get_format_bytes(intel_rb_format(rb)) * 8;
-}
-
-static void
-intel_query_dri2_buffers(struct brw_context *brw,
- __DRIdrawable *drawable,
- __DRIbuffer **buffers,
- int *count);
-
-static void
-intel_process_dri2_buffer(struct brw_context *brw,
- __DRIdrawable *drawable,
- __DRIbuffer *buffer,
- struct intel_renderbuffer *rb,
- const char *buffer_name);
-
-void
-intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
-{
- struct gl_framebuffer *fb = drawable->driverPrivate;
- struct intel_renderbuffer *rb;
- struct brw_context *brw = context->driverPrivate;
- __DRIbuffer *buffers = NULL;
- int i, count;
- const char *region_name;
-
- /* Set this up front, so that in case our buffers get invalidated
- * while we're getting new buffers, we don't clobber the stamp and
- * thus ignore the invalidate. */
- drawable->lastStamp = drawable->dri2.stamp;
-
- if (unlikely(INTEL_DEBUG & DEBUG_DRI))
- fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
-
- intel_query_dri2_buffers(brw, drawable, &buffers, &count);
-
- if (buffers == NULL)
- return;
-
- for (i = 0; i < count; i++) {
- switch (buffers[i].attachment) {
- case __DRI_BUFFER_FRONT_LEFT:
- rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
- region_name = "dri2 front buffer";
- break;
-
- case __DRI_BUFFER_FAKE_FRONT_LEFT:
- rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
- region_name = "dri2 fake front buffer";
- break;
-
- case __DRI_BUFFER_BACK_LEFT:
- rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
- region_name = "dri2 back buffer";
- break;
-
- case __DRI_BUFFER_DEPTH:
- case __DRI_BUFFER_HIZ:
- case __DRI_BUFFER_DEPTH_STENCIL:
- case __DRI_BUFFER_STENCIL:
- case __DRI_BUFFER_ACCUM:
- default:
- fprintf(stderr,
- "unhandled buffer attach event, attachment type %d\n",
- buffers[i].attachment);
- return;
- }
-
- intel_process_dri2_buffer(brw, drawable, &buffers[i], rb, region_name);
- }
-
- driUpdateFramebufferSize(&brw->ctx, drawable);
-}
-
-/**
- * intel_prepare_render should be called anywhere that curent read/drawbuffer
- * state is required.
- */
-void
-intel_prepare_render(struct brw_context *brw)
-{
- __DRIcontext *driContext = brw->driContext;
- __DRIdrawable *drawable;
-
- drawable = driContext->driDrawablePriv;
- if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
- if (drawable->lastStamp != drawable->dri2.stamp)
- intel_update_renderbuffers(driContext, drawable);
- driContext->dri2.draw_stamp = drawable->dri2.stamp;
- }
-
- drawable = driContext->driReadablePriv;
- if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
- if (drawable->lastStamp != drawable->dri2.stamp)
- intel_update_renderbuffers(driContext, drawable);
- driContext->dri2.read_stamp = drawable->dri2.stamp;
- }
-
- /* If we're currently rendering to the front buffer, the rendering
- * that will happen next will probably dirty the front buffer. So
- * mark it as dirty here.
- */
- if (brw->is_front_buffer_rendering)
- brw->front_buffer_dirty = true;
-
- /* Wait for the swapbuffers before the one we just emitted, so we
- * don't get too many swaps outstanding for apps that are GPU-heavy
- * but not CPU-heavy.
- *
- * We're using intelDRI2Flush (called from the loader before
- * swapbuffer) and glFlush (for front buffer rendering) as the
- * indicator that a frame is done and then throttle when we get
- * here as we prepare to render the next frame. At this point for
- * round trips for swap/copy and getting new buffers are done and
- * we'll spend less time waiting on the GPU.
- *
- * Unfortunately, we don't have a handle to the batch containing
- * the swap, and getting our hands on that doesn't seem worth it,
- * so we just us the first batch we emitted after the last swap.
- */
- if (brw->need_throttle && brw->first_post_swapbuffers_batch) {
- if (!brw->disable_throttling)
- drm_intel_bo_wait_rendering(brw->first_post_swapbuffers_batch);
- drm_intel_bo_unreference(brw->first_post_swapbuffers_batch);
- brw->first_post_swapbuffers_batch = NULL;
- brw->need_throttle = false;
- }
-}
-
-static void
-intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
-{
- struct brw_context *brw = brw_context(ctx);
- __DRIcontext *driContext = brw->driContext;
-
- if (brw->saved_viewport)
- brw->saved_viewport(ctx, x, y, w, h);
-
- if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
- dri2InvalidateDrawable(driContext->driDrawablePriv);
- dri2InvalidateDrawable(driContext->driReadablePriv);
- }
-}
-
-static void
-intelInvalidateState(struct gl_context * ctx, GLuint new_state)
-{
- struct brw_context *brw = brw_context(ctx);
-
- if (ctx->swrast_context)
- _swrast_InvalidateState(ctx, new_state);
- _vbo_InvalidateState(ctx, new_state);
-
- brw->NewGLState |= new_state;
-}
-
-static void
-intel_glFlush(struct gl_context *ctx)
-{
- struct brw_context *brw = brw_context(ctx);
-
- intel_batchbuffer_flush(brw);
- intel_flush_front(ctx);
- if (brw->is_front_buffer_rendering)
- brw->need_throttle = true;
-}
-
-void
-intelFinish(struct gl_context * ctx)
-{
- struct brw_context *brw = brw_context(ctx);
-
- intel_glFlush(ctx);
-
- if (brw->batch.last_bo)
- drm_intel_bo_wait_rendering(brw->batch.last_bo);
-}
-
-void
-intelInitDriverFunctions(struct dd_function_table *functions)
-{
- _mesa_init_driver_functions(functions);
-
- functions->Flush = intel_glFlush;
- functions->Finish = intelFinish;
- functions->GetString = intelGetString;
- functions->UpdateState = intelInvalidateState;
-
- intelInitTextureFuncs(functions);
- intelInitTextureImageFuncs(functions);
- intelInitTextureSubImageFuncs(functions);
- intelInitTextureCopyImageFuncs(functions);
- intelInitClearFuncs(functions);
- intelInitBufferFuncs(functions);
- intelInitPixelFuncs(functions);
- intelInitBufferObjectFuncs(functions);
- intel_init_syncobj_functions(functions);
- brw_init_object_purgeable_functions(functions);
-}
-
-bool
-intelInitContext(struct brw_context *brw,
- int api,
- unsigned major_version,
- unsigned minor_version,
- const struct gl_config * mesaVis,
- __DRIcontext * driContextPriv,
- void *sharedContextPrivate,
- struct dd_function_table *functions,
- unsigned *dri_ctx_error)
-{
- struct gl_context *ctx = &brw->ctx;
-
- /* GLX uses DRI2 invalidate events to handle window resizing.
- * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib),
- * which doesn't provide a mechanism for snooping the event queues.
- *
- * So EGL still relies on viewport hacks to handle window resizing.
- * This should go away with DRI3000.
- */
- if (!driContextPriv->driScreenPriv->dri2.useInvalidate) {
- brw->saved_viewport = functions->Viewport;
- functions->Viewport = intel_viewport;
- }
-
- /* Estimate the size of the mappable aperture into the GTT. There's an
- * ioctl to get the whole GTT size, but not one to get the mappable subset.
- * It turns out it's basically always 256MB, though some ancient hardware
- * was smaller.
- */
- uint32_t gtt_size = 256 * 1024 * 1024;
-
- /* We don't want to map two objects such that a memcpy between them would
- * just fault one mapping in and then the other over and over forever. So
- * we would need to divide the GTT size by 2. Additionally, some GTT is
- * taken up by things like the framebuffer and the ringbuffer and such, so
- * be more conservative.
- */
- brw->max_gtt_map_object_size = gtt_size / 4;
-
- /* Initialize the software rasterizer and helper modules.
- *
- * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
- * software fallbacks (which we have to support on legacy GL to do weird
- * glDrawPixels(), glBitmap(), and other functions).
- */
- if (api != API_OPENGL_CORE && api != API_OPENGLES2) {
- _swrast_CreateContext(ctx);
- }
-
- _vbo_CreateContext(ctx);
- if (ctx->swrast_context) {
- _tnl_CreateContext(ctx);
- _swsetup_CreateContext(ctx);
-
- /* Configure swrast to match hardware characteristics: */
- _swrast_allow_pixel_fog(ctx, false);
- _swrast_allow_vertex_fog(ctx, true);
- }
-
- _mesa_meta_init(ctx);
-
- intelInitExtensions(ctx);
-
- brw_process_intel_debug_variable(brw);
-
- intel_batchbuffer_init(brw);
-
- intel_fbo_init(brw);
-
- return true;
-}
-
-void
-intelDestroyContext(__DRIcontext * driContextPriv)
-{
- struct brw_context *brw =
- (struct brw_context *) driContextPriv->driverPrivate;
- struct gl_context *ctx = &brw->ctx;
-
- assert(brw); /* should never be null */
- if (brw) {
- /* Dump a final BMP in case the application doesn't call SwapBuffers */
- if (INTEL_DEBUG & DEBUG_AUB) {
- intel_batchbuffer_flush(brw);
- aub_dump_bmp(&brw->ctx);
- }
-
- _mesa_meta_free(&brw->ctx);
-
- brw->vtbl.destroy(brw);
-
- if (ctx->swrast_context) {
- _swsetup_DestroyContext(&brw->ctx);
- _tnl_DestroyContext(&brw->ctx);
- }
- _vbo_DestroyContext(&brw->ctx);
-
- if (ctx->swrast_context)
- _swrast_DestroyContext(&brw->ctx);
-
- intel_batchbuffer_free(brw);
-
- drm_intel_bo_unreference(brw->first_post_swapbuffers_batch);
- brw->first_post_swapbuffers_batch = NULL;
-
- driDestroyOptionCache(&brw->optionCache);
-
- /* free the Mesa context */
- _mesa_free_context_data(&brw->ctx);
-
- ralloc_free(brw);
- driContextPriv->driverPrivate = NULL;
- }
-}
-
-GLboolean
-intelUnbindContext(__DRIcontext * driContextPriv)
-{
- /* Unset current context and dispath table */
- _mesa_make_current(NULL, NULL, NULL);
-
- return true;
-}
-
-/**
- * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
- * on window system framebuffers.
- *
- * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
- * your renderbuffer can do sRGB encode, and you can flip a switch that does
- * sRGB encode if the renderbuffer can handle it. You can ask specifically
- * for a visual where you're guaranteed to be capable, but it turns out that
- * everyone just makes all their ARGB8888 visuals capable and doesn't offer
- * incapable ones, becuase there's no difference between the two in resources
- * used. Applications thus get built that accidentally rely on the default
- * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
- * great...
- *
- * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
- * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
- * So they removed the enable knob and made it "if the renderbuffer is sRGB
- * capable, do sRGB encode". Then, for your window system renderbuffers, you
- * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
- * and get no sRGB encode (assuming that both kinds of visual are available).
- * Thus our choice to support sRGB by default on our visuals for desktop would
- * result in broken rendering of GLES apps that aren't expecting sRGB encode.
- *
- * Unfortunately, renderbuffer setup happens before a context is created. So
- * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
- * context (without an sRGB visual, though we don't have sRGB visuals exposed
- * yet), we go turn that back off before anyone finds out.
- */
-static void
-intel_gles3_srgb_workaround(struct brw_context *brw,
- struct gl_framebuffer *fb)
-{
- struct gl_context *ctx = &brw->ctx;
-
- if (_mesa_is_desktop_gl(ctx) || !fb->Visual.sRGBCapable)
- return;
-
- /* Some day when we support the sRGB capable bit on visuals available for
- * GLES, we'll need to respect that and not disable things here.
- */
- fb->Visual.sRGBCapable = false;
- for (int i = 0; i < BUFFER_COUNT; i++) {
- if (fb->Attachment[i].Renderbuffer &&
- fb->Attachment[i].Renderbuffer->Format == MESA_FORMAT_SARGB8) {
- fb->Attachment[i].Renderbuffer->Format = MESA_FORMAT_ARGB8888;
- }
- }
-}
-
-GLboolean
-intelMakeCurrent(__DRIcontext * driContextPriv,
- __DRIdrawable * driDrawPriv,
- __DRIdrawable * driReadPriv)
-{
- struct brw_context *brw;
- GET_CURRENT_CONTEXT(curCtx);
-
- if (driContextPriv)
- brw = (struct brw_context *) driContextPriv->driverPrivate;
- else
- brw = NULL;
-
- /* According to the glXMakeCurrent() man page: "Pending commands to
- * the previous context, if any, are flushed before it is released."
- * But only flush if we're actually changing contexts.
- */
- if (brw_context(curCtx) && brw_context(curCtx) != brw) {
- _mesa_flush(curCtx);
- }
-
- if (driContextPriv) {
- struct gl_context *ctx = &brw->ctx;
- struct gl_framebuffer *fb, *readFb;
-
- if (driDrawPriv == NULL && driReadPriv == NULL) {
- fb = _mesa_get_incomplete_framebuffer();
- readFb = _mesa_get_incomplete_framebuffer();
- } else {
- fb = driDrawPriv->driverPrivate;
- readFb = driReadPriv->driverPrivate;
- driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
- driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
- }
-
- /* The sRGB workaround changes the renderbuffer's format. We must change
- * the format before the renderbuffer's miptree get's allocated, otherwise
- * the formats of the renderbuffer and its miptree will differ.
- */
- intel_gles3_srgb_workaround(brw, fb);
- intel_gles3_srgb_workaround(brw, readFb);
-
- intel_prepare_render(brw);
- _mesa_make_current(ctx, fb, readFb);
- }
- else {
- _mesa_make_current(NULL, NULL, NULL);
- }
-
- return true;
-}
-
-/**
- * \brief Query DRI2 to obtain a DRIdrawable's buffers.
- *
- * To determine which DRI buffers to request, examine the renderbuffers
- * attached to the drawable's framebuffer. Then request the buffers with
- * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
- *
- * This is called from intel_update_renderbuffers().
- *
- * \param drawable Drawable whose buffers are queried.
- * \param buffers [out] List of buffers returned by DRI2 query.
- * \param buffer_count [out] Number of buffers returned.
- *
- * \see intel_update_renderbuffers()
- * \see DRI2GetBuffers()
- * \see DRI2GetBuffersWithFormat()
- */
-static void
-intel_query_dri2_buffers(struct brw_context *brw,
- __DRIdrawable *drawable,
- __DRIbuffer **buffers,
- int *buffer_count)
-{
- __DRIscreen *screen = brw->intelScreen->driScrnPriv;
- struct gl_framebuffer *fb = drawable->driverPrivate;
- int i = 0;
- unsigned attachments[8];
-
- struct intel_renderbuffer *front_rb;
- struct intel_renderbuffer *back_rb;
-
- front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
- back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
-
- memset(attachments, 0, sizeof(attachments));
- if ((brw->is_front_buffer_rendering ||
- brw->is_front_buffer_reading ||
- !back_rb) && front_rb) {
- /* If a fake front buffer is in use, then querying for
- * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
- * the real front buffer to the fake front buffer. So before doing the
- * query, we need to make sure all the pending drawing has landed in the
- * real front buffer.
- */
- intel_batchbuffer_flush(brw);
- intel_flush_front(&brw->ctx);
-
- attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
- attachments[i++] = intel_bits_per_pixel(front_rb);
- } else if (front_rb && brw->front_buffer_dirty) {
- /* We have pending front buffer rendering, but we aren't querying for a
- * front buffer. If the front buffer we have is a fake front buffer,
- * the X server is going to throw it away when it processes the query.
- * So before doing the query, make sure all the pending drawing has
- * landed in the real front buffer.
- */
- intel_batchbuffer_flush(brw);
- intel_flush_front(&brw->ctx);
- }
-
- if (back_rb) {
- attachments[i++] = __DRI_BUFFER_BACK_LEFT;
- attachments[i++] = intel_bits_per_pixel(back_rb);
- }
-
- assert(i <= ARRAY_SIZE(attachments));
-
- *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
- &drawable->w,
- &drawable->h,
- attachments, i / 2,
- buffer_count,
- drawable->loaderPrivate);
-}
-
-/**
- * \brief Assign a DRI buffer's DRM region to a renderbuffer.
- *
- * This is called from intel_update_renderbuffers().
- *
- * \par Note:
- * DRI buffers whose attachment point is DRI2BufferStencil or
- * DRI2BufferDepthStencil are handled as special cases.
- *
- * \param buffer_name is a human readable name, such as "dri2 front buffer",
- * that is passed to intel_region_alloc_for_handle().
- *
- * \see intel_update_renderbuffers()
- * \see intel_region_alloc_for_handle()
- */
-static void
-intel_process_dri2_buffer(struct brw_context *brw,
- __DRIdrawable *drawable,
- __DRIbuffer *buffer,
- struct intel_renderbuffer *rb,
- const char *buffer_name)
-{
- struct intel_region *region = NULL;
-
- if (!rb)
- return;
-
- unsigned num_samples = rb->Base.Base.NumSamples;
-
- /* We try to avoid closing and reopening the same BO name, because the first
- * use of a mapping of the buffer involves a bunch of page faulting which is
- * moderately expensive.
- */
- if (num_samples == 0) {
- if (rb->mt &&
- rb->mt->region &&
- rb->mt->region->name == buffer->name)
- return;
- } else {
- if (rb->mt &&
- rb->mt->singlesample_mt &&
- rb->mt->singlesample_mt->region &&
- rb->mt->singlesample_mt->region->name == buffer->name)
- return;
- }
-
- if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
- fprintf(stderr,
- "attaching buffer %d, at %d, cpp %d, pitch %d\n",
- buffer->name, buffer->attachment,
- buffer->cpp, buffer->pitch);
- }
-
- intel_miptree_release(&rb->mt);
- region = intel_region_alloc_for_handle(brw->intelScreen,
- buffer->cpp,
- drawable->w,
- drawable->h,
- buffer->pitch,
- buffer->name,
- buffer_name);
- if (!region)
- return;
-
- rb->mt = intel_miptree_create_for_dri2_buffer(brw,
- buffer->attachment,
- intel_rb_format(rb),
- num_samples,
- region);
- intel_region_release(®ion);
-}
--
1.8.3.4
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