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authorEric Anholt <[email protected]>2011-07-12 09:43:22 -0700
committerEric Anholt <[email protected]>2011-07-18 11:26:33 -0700
commitf34ec6169dc8b96e3958a42b51c9048c5f42ed80 (patch)
tree469072d9a27c8abaeb49d49597c861d08aaf160f /src/mesa/drivers/dri/i965/brw_vtbl.c
parent8cf2741d2b05fd9f41eca35f0f43e6e0684d57f2 (diff)
intel: Move intel_draw_buffers() code into each driver.
The illusion of shared code here wasn't fooling anybody. It was tempting to keep i830 and i915 still shared, but I think I actually want to make them diverge shortly. Reviewed-by: Chad Versace <[email protected]>
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_vtbl.c')
-rw-r--r--src/mesa/drivers/dri/i965/brw_vtbl.c201
1 files changed, 201 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vtbl.c b/src/mesa/drivers/dri/i965/brw_vtbl.c
index 6aeeda6e0fa..ef1d4f6da52 100644
--- a/src/mesa/drivers/dri/i965/brw_vtbl.c
+++ b/src/mesa/drivers/dri/i965/brw_vtbl.c
@@ -35,9 +35,12 @@
#include "main/imports.h"
#include "main/macros.h"
#include "main/colormac.h"
+#include "main/renderbuffer.h"
+#include "main/framebuffer.h"
#include "intel_batchbuffer.h"
#include "intel_regions.h"
+#include "intel_fbo.h"
#include "brw_context.h"
#include "brw_defines.h"
@@ -76,6 +79,203 @@ static void brw_destroy_context( struct intel_context *intel )
free(brw->curbe.next_buf);
}
+/**
+ * Update the hardware state for drawing into a window or framebuffer object.
+ *
+ * Called by glDrawBuffer, glBindFramebufferEXT, MakeCurrent, and other
+ * places within the driver.
+ *
+ * Basically, this needs to be called any time the current framebuffer
+ * changes, the renderbuffers change, or we need to draw into different
+ * color buffers.
+ */
+static void
+brw_update_draw_buffer(struct intel_context *intel)
+{
+ struct gl_context *ctx = &intel->ctx;
+ struct gl_framebuffer *fb = ctx->DrawBuffer;
+ struct intel_region *colorRegions[MAX_DRAW_BUFFERS], *depthRegion = NULL;
+ struct intel_renderbuffer *irbDepth = NULL, *irbStencil = NULL;
+ bool fb_has_hiz = intel_framebuffer_has_hiz(fb);
+
+ if (!fb) {
+ /* this can happen during the initial context initialization */
+ return;
+ }
+
+ /*
+ * If intel_context is using separate stencil, but the depth attachment
+ * (gl_framebuffer.Attachment[BUFFER_DEPTH]) has a packed depth/stencil
+ * format, then we must install the real depth buffer at fb->_DepthBuffer
+ * and set fb->_DepthBuffer->Wrapped before calling _mesa_update_framebuffer.
+ * Otherwise, _mesa_update_framebuffer will create and install a swras
+ * depth wrapper instead.
+ *
+ * Ditto for stencil.
+ */
+ irbDepth = intel_get_renderbuffer(fb, BUFFER_DEPTH);
+ if (irbDepth && irbDepth->Base.Format == MESA_FORMAT_X8_Z24) {
+ _mesa_reference_renderbuffer(&fb->_DepthBuffer, &irbDepth->Base);
+ irbDepth->Base.Wrapped = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ }
+
+ irbStencil = intel_get_renderbuffer(fb, BUFFER_STENCIL);
+ if (irbStencil && irbStencil->Base.Format == MESA_FORMAT_S8) {
+ _mesa_reference_renderbuffer(&fb->_StencilBuffer, &irbStencil->Base);
+ irbStencil->Base.Wrapped = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+ }
+
+ /* Do this here, not core Mesa, since this function is called from
+ * many places within the driver.
+ */
+ if (ctx->NewState & _NEW_BUFFERS) {
+ /* this updates the DrawBuffer->_NumColorDrawBuffers fields, etc */
+ _mesa_update_framebuffer(ctx);
+ /* this updates the DrawBuffer's Width/Height if it's a FBO */
+ _mesa_update_draw_buffer_bounds(ctx);
+ }
+
+ if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ /* this may occur when we're called by glBindFrameBuffer() during
+ * the process of someone setting up renderbuffers, etc.
+ */
+ /*_mesa_debug(ctx, "DrawBuffer: incomplete user FBO\n");*/
+ return;
+ }
+
+ /* How many color buffers are we drawing into?
+ *
+ * If there are zero buffers or the buffer is too big, don't configure any
+ * regions for hardware drawing. We'll fallback to software below. Not
+ * having regions set makes some of the software fallback paths faster.
+ */
+ if ((fb->Width > ctx->Const.MaxRenderbufferSize)
+ || (fb->Height > ctx->Const.MaxRenderbufferSize)
+ || (fb->_NumColorDrawBuffers == 0)) {
+ /* writing to 0 */
+ colorRegions[0] = NULL;
+ }
+ else if (fb->_NumColorDrawBuffers > 1) {
+ int i;
+ struct intel_renderbuffer *irb;
+
+ for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
+ irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
+ colorRegions[i] = irb ? irb->region : NULL;
+ }
+ }
+ else {
+ /* Get the intel_renderbuffer for the single colorbuffer we're drawing
+ * into.
+ */
+ if (fb->Name == 0) {
+ /* drawing to window system buffer */
+ if (fb->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT)
+ colorRegions[0] = intel_get_rb_region(fb, BUFFER_FRONT_LEFT);
+ else
+ colorRegions[0] = intel_get_rb_region(fb, BUFFER_BACK_LEFT);
+ }
+ else {
+ /* drawing to user-created FBO */
+ struct intel_renderbuffer *irb;
+ irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
+ colorRegions[0] = (irb && irb->region) ? irb->region : NULL;
+ }
+ }
+
+ if (!colorRegions[0]) {
+ FALLBACK(intel, INTEL_FALLBACK_DRAW_BUFFER, GL_TRUE);
+ }
+ else {
+ FALLBACK(intel, INTEL_FALLBACK_DRAW_BUFFER, GL_FALSE);
+ }
+
+ /* Check for depth fallback. */
+ if (irbDepth && irbDepth->region) {
+ assert(!fb_has_hiz || irbDepth->Base.Format != MESA_FORMAT_S8_Z24);
+ FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, GL_FALSE);
+ depthRegion = irbDepth->region;
+ } else if (irbDepth && !irbDepth->region) {
+ FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, GL_TRUE);
+ depthRegion = NULL;
+ } else { /* !irbDepth */
+ /* No fallback is needed because there is no depth buffer. */
+ FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, GL_FALSE);
+ depthRegion = NULL;
+ }
+
+ /* Check for stencil fallback. */
+ if (irbStencil && irbStencil->region) {
+ if (!intel->has_separate_stencil)
+ assert(irbStencil->Base.Format == MESA_FORMAT_S8_Z24);
+ if (fb_has_hiz || intel->must_use_separate_stencil)
+ assert(irbStencil->Base.Format == MESA_FORMAT_S8);
+ if (irbStencil->Base.Format == MESA_FORMAT_S8)
+ assert(intel->has_separate_stencil);
+ FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_FALSE);
+ } else if (irbStencil && !irbStencil->region) {
+ FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_TRUE);
+ } else { /* !irbStencil */
+ /* No fallback is needed because there is no stencil buffer. */
+ FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_FALSE);
+ }
+
+ /* If we have a (packed) stencil buffer attached but no depth buffer,
+ * we still need to set up the shared depth/stencil state so we can use it.
+ */
+ if (depthRegion == NULL && irbStencil && irbStencil->region
+ && irbStencil->Base.Format == MESA_FORMAT_S8_Z24) {
+ depthRegion = irbStencil->region;
+ }
+
+ /*
+ * Update depth and stencil test state
+ */
+ if (ctx->Driver.Enable) {
+ ctx->Driver.Enable(ctx, GL_DEPTH_TEST,
+ (ctx->Depth.Test && fb->Visual.depthBits > 0));
+ ctx->Driver.Enable(ctx, GL_STENCIL_TEST,
+ (ctx->Stencil.Enabled && fb->Visual.stencilBits > 0));
+ }
+ else {
+ /* Mesa's Stencil._Enabled field is updated when
+ * _NEW_BUFFERS | _NEW_STENCIL, but i965 code assumes that the value
+ * only changes with _NEW_STENCIL (which seems sensible). So flag it
+ * here since this is the _NEW_BUFFERS path.
+ */
+ intel->NewGLState |= (_NEW_DEPTH | _NEW_STENCIL);
+ }
+
+ intel->vtbl.set_draw_region(intel, colorRegions, depthRegion,
+ fb->_NumColorDrawBuffers);
+ intel->NewGLState |= _NEW_BUFFERS;
+
+ /* update viewport since it depends on window size */
+#ifdef I915
+ intelCalcViewport(ctx);
+#else
+ intel->NewGLState |= _NEW_VIEWPORT;
+#endif
+ /* Set state we know depends on drawable parameters:
+ */
+ if (ctx->Driver.Scissor)
+ ctx->Driver.Scissor(ctx, ctx->Scissor.X, ctx->Scissor.Y,
+ ctx->Scissor.Width, ctx->Scissor.Height);
+ intel->NewGLState |= _NEW_SCISSOR;
+
+ if (ctx->Driver.DepthRange)
+ ctx->Driver.DepthRange(ctx,
+ ctx->Viewport.Near,
+ ctx->Viewport.Far);
+
+ /* Update culling direction which changes depending on the
+ * orientation of the buffer:
+ */
+ if (ctx->Driver.FrontFace)
+ ctx->Driver.FrontFace(ctx, ctx->Polygon.FrontFace);
+ else
+ intel->NewGLState |= _NEW_POLYGON;
+}
/**
* called from intelDrawBuffer()
@@ -162,6 +362,7 @@ void brwInitVtbl( struct brw_context *brw )
brw->intel.vtbl.new_batch = brw_new_batch;
brw->intel.vtbl.finish_batch = brw_finish_batch;
brw->intel.vtbl.destroy = brw_destroy_context;
+ brw->intel.vtbl.update_draw_buffer = brw_update_draw_buffer;
brw->intel.vtbl.set_draw_region = brw_set_draw_region;
brw->intel.vtbl.debug_batch = brw_debug_batch;
brw->intel.vtbl.render_target_supported = brw_render_target_supported;