return stage;
}
-/****************************************************************************
- * Two-sided stencil reference value fallback. It's designed to be as much
- * separate from rest of the driver as possible.
- ***************************************************************************/
-
-struct r300_stencilref_context {
- void (*draw_arrays)(struct pipe_context *pipe,
- unsigned mode, unsigned start, unsigned count);
-
- void (*draw_range_elements)(
- struct pipe_context *pipe, struct pipe_resource *indexBuffer,
- unsigned indexSize, int indexBias, unsigned minIndex, unsigned maxIndex,
- unsigned mode, unsigned start, unsigned count);
-
- uint32_t rs_cull_mode;
- uint32_t zb_stencilrefmask;
- ubyte ref_value_front;
-};
-
-static boolean r300_stencilref_needed(struct r300_context *r300)
-{
- struct r300_dsa_state *dsa = (struct r300_dsa_state*)r300->dsa_state.state;
-
- return dsa->two_sided_stencil_ref ||
- (dsa->two_sided &&
- r300->stencil_ref.ref_value[0] != r300->stencil_ref.ref_value[1]);
-}
-
-/* Set drawing for front faces. */
-static void r300_stencilref_begin(struct r300_context *r300)
-{
- struct r300_stencilref_context *sr = r300->stencilref_fallback;
- struct r300_rs_state *rs = (struct r300_rs_state*)r300->rs_state.state;
- struct r300_dsa_state *dsa = (struct r300_dsa_state*)r300->dsa_state.state;
-
- /* Save state. */
- sr->rs_cull_mode = rs->cull_mode;
- sr->zb_stencilrefmask = dsa->stencil_ref_mask;
- sr->ref_value_front = r300->stencil_ref.ref_value[0];
-
- /* We *cull* pixels, therefore no need to mask out the bits. */
- rs->cull_mode |= R300_CULL_BACK;
-
- r300->rs_state.dirty = TRUE;
-}
-
-/* Set drawing for back faces. */
-static void r300_stencilref_switch_side(struct r300_context *r300)
-{
- struct r300_stencilref_context *sr = r300->stencilref_fallback;
- struct r300_rs_state *rs = (struct r300_rs_state*)r300->rs_state.state;
- struct r300_dsa_state *dsa = (struct r300_dsa_state*)r300->dsa_state.state;
-
- rs->cull_mode = sr->rs_cull_mode | R300_CULL_FRONT;
- dsa->stencil_ref_mask = dsa->stencil_ref_bf;
- r300->stencil_ref.ref_value[0] = r300->stencil_ref.ref_value[1];
-
- r300->rs_state.dirty = TRUE;
- r300->dsa_state.dirty = TRUE;
-}
-
-/* Restore the original state. */
-static void r300_stencilref_end(struct r300_context *r300)
-{
- struct r300_stencilref_context *sr = r300->stencilref_fallback;
- struct r300_rs_state *rs = (struct r300_rs_state*)r300->rs_state.state;
- struct r300_dsa_state *dsa = (struct r300_dsa_state*)r300->dsa_state.state;
-
- /* Restore state. */
- rs->cull_mode = sr->rs_cull_mode;
- dsa->stencil_ref_mask = sr->zb_stencilrefmask;
- r300->stencil_ref.ref_value[0] = sr->ref_value_front;
-
- r300->rs_state.dirty = TRUE;
- r300->dsa_state.dirty = TRUE;
-}
-
-static void r300_stencilref_draw_arrays(struct pipe_context *pipe, unsigned mode,
- unsigned start, unsigned count)
-{
- struct r300_context *r300 = r300_context(pipe);
- struct r300_stencilref_context *sr = r300->stencilref_fallback;
-
- if (!r300_stencilref_needed(r300)) {
- sr->draw_arrays(pipe, mode, start, count);
- } else {
- r300_stencilref_begin(r300);
- sr->draw_arrays(pipe, mode, start, count);
- r300_stencilref_switch_side(r300);
- sr->draw_arrays(pipe, mode, start, count);
- r300_stencilref_end(r300);
- }
-}
-
-static void r300_stencilref_draw_range_elements(
- struct pipe_context *pipe, struct pipe_resource *indexBuffer,
- unsigned indexSize, int indexBias, unsigned minIndex, unsigned maxIndex,
- unsigned mode, unsigned start, unsigned count)
-{
- struct r300_context *r300 = r300_context(pipe);
- struct r300_stencilref_context *sr = r300->stencilref_fallback;
-
- if (!r300_stencilref_needed(r300)) {
- sr->draw_range_elements(pipe, indexBuffer, indexSize, indexBias,
- minIndex, maxIndex, mode, start, count);
- } else {
- r300_stencilref_begin(r300);
- sr->draw_range_elements(pipe, indexBuffer, indexSize, indexBias,
- minIndex, maxIndex, mode, start, count);
- r300_stencilref_switch_side(r300);
- sr->draw_range_elements(pipe, indexBuffer, indexSize, indexBias,
- minIndex, maxIndex, mode, start, count);
- r300_stencilref_end(r300);
- }
-}
-
-static void r300_plug_in_stencil_ref_fallback(struct r300_context *r300)
-{
- r300->stencilref_fallback = CALLOC_STRUCT(r300_stencilref_context);
-
- /* Save original draw functions. */
- r300->stencilref_fallback->draw_arrays = r300->context.draw_arrays;
- r300->stencilref_fallback->draw_range_elements = r300->context.draw_range_elements;
-
- /* Override the draw functions. */
- r300->context.draw_arrays = r300_stencilref_draw_arrays;
- r300->context.draw_range_elements = r300_stencilref_draw_range_elements;
-}
-
void r300_init_render_functions(struct r300_context *r300)
{
/* Set generic functions. */
r300->context.draw_range_elements = r300_swtcl_draw_range_elements;
}
- /* Plug in two-sided stencil reference value fallback if needed. */
+ /* Plug in the two-sided stencil reference value fallback if needed. */
if (!r300->screen->caps.is_r500)
r300_plug_in_stencil_ref_fallback(r300);
}
--- /dev/null
+/*
+ * Copyright 2010 Marek Olšák <maraeo@gmail.com>
+ *
+ * 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
+ * on 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
+ * THE AUTHOR(S) AND/OR THEIR 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. */
+
+/**
+ * The two-sided stencil reference value fallback for r3xx-r4xx chips.
+ * These chips support two-sided stencil functions but they do not support
+ * a two-sided reference value.
+ *
+ * The functions below split every draw call which uses the two-sided
+ * reference value into two draw calls -- the first one renders front faces
+ * and the second renders back faces with the other reference value.
+ */
+
+#include "r300_context.h"
+#include "r300_reg.h"
+
+struct r300_stencilref_context {
+ void (*draw_arrays)(struct pipe_context *pipe,
+ unsigned mode, unsigned start, unsigned count);
+
+ void (*draw_range_elements)(
+ struct pipe_context *pipe, struct pipe_resource *indexBuffer,
+ unsigned indexSize, int indexBias, unsigned minIndex, unsigned maxIndex,
+ unsigned mode, unsigned start, unsigned count);
+
+ uint32_t rs_cull_mode;
+ uint32_t zb_stencilrefmask;
+ ubyte ref_value_front;
+};
+
+static boolean r300_stencilref_needed(struct r300_context *r300)
+{
+ struct r300_dsa_state *dsa = (struct r300_dsa_state*)r300->dsa_state.state;
+
+ return dsa->two_sided_stencil_ref ||
+ (dsa->two_sided &&
+ r300->stencil_ref.ref_value[0] != r300->stencil_ref.ref_value[1]);
+}
+
+/* Set drawing for front faces. */
+static void r300_stencilref_begin(struct r300_context *r300)
+{
+ struct r300_stencilref_context *sr = r300->stencilref_fallback;
+ struct r300_rs_state *rs = (struct r300_rs_state*)r300->rs_state.state;
+ struct r300_dsa_state *dsa = (struct r300_dsa_state*)r300->dsa_state.state;
+
+ /* Save state. */
+ sr->rs_cull_mode = rs->cull_mode;
+ sr->zb_stencilrefmask = dsa->stencil_ref_mask;
+ sr->ref_value_front = r300->stencil_ref.ref_value[0];
+
+ /* We *cull* pixels, therefore no need to mask out the bits. */
+ rs->cull_mode |= R300_CULL_BACK;
+
+ r300->rs_state.dirty = TRUE;
+}
+
+/* Set drawing for back faces. */
+static void r300_stencilref_switch_side(struct r300_context *r300)
+{
+ struct r300_stencilref_context *sr = r300->stencilref_fallback;
+ struct r300_rs_state *rs = (struct r300_rs_state*)r300->rs_state.state;
+ struct r300_dsa_state *dsa = (struct r300_dsa_state*)r300->dsa_state.state;
+
+ rs->cull_mode = sr->rs_cull_mode | R300_CULL_FRONT;
+ dsa->stencil_ref_mask = dsa->stencil_ref_bf;
+ r300->stencil_ref.ref_value[0] = r300->stencil_ref.ref_value[1];
+
+ r300->rs_state.dirty = TRUE;
+ r300->dsa_state.dirty = TRUE;
+}
+
+/* Restore the original state. */
+static void r300_stencilref_end(struct r300_context *r300)
+{
+ struct r300_stencilref_context *sr = r300->stencilref_fallback;
+ struct r300_rs_state *rs = (struct r300_rs_state*)r300->rs_state.state;
+ struct r300_dsa_state *dsa = (struct r300_dsa_state*)r300->dsa_state.state;
+
+ /* Restore state. */
+ rs->cull_mode = sr->rs_cull_mode;
+ dsa->stencil_ref_mask = sr->zb_stencilrefmask;
+ r300->stencil_ref.ref_value[0] = sr->ref_value_front;
+
+ r300->rs_state.dirty = TRUE;
+ r300->dsa_state.dirty = TRUE;
+}
+
+static void r300_stencilref_draw_arrays(struct pipe_context *pipe, unsigned mode,
+ unsigned start, unsigned count)
+{
+ struct r300_context *r300 = r300_context(pipe);
+ struct r300_stencilref_context *sr = r300->stencilref_fallback;
+
+ if (!r300_stencilref_needed(r300)) {
+ sr->draw_arrays(pipe, mode, start, count);
+ } else {
+ r300_stencilref_begin(r300);
+ sr->draw_arrays(pipe, mode, start, count);
+ r300_stencilref_switch_side(r300);
+ sr->draw_arrays(pipe, mode, start, count);
+ r300_stencilref_end(r300);
+ }
+}
+
+static void r300_stencilref_draw_range_elements(
+ struct pipe_context *pipe, struct pipe_resource *indexBuffer,
+ unsigned indexSize, int indexBias, unsigned minIndex, unsigned maxIndex,
+ unsigned mode, unsigned start, unsigned count)
+{
+ struct r300_context *r300 = r300_context(pipe);
+ struct r300_stencilref_context *sr = r300->stencilref_fallback;
+
+ if (!r300_stencilref_needed(r300)) {
+ sr->draw_range_elements(pipe, indexBuffer, indexSize, indexBias,
+ minIndex, maxIndex, mode, start, count);
+ } else {
+ r300_stencilref_begin(r300);
+ sr->draw_range_elements(pipe, indexBuffer, indexSize, indexBias,
+ minIndex, maxIndex, mode, start, count);
+ r300_stencilref_switch_side(r300);
+ sr->draw_range_elements(pipe, indexBuffer, indexSize, indexBias,
+ minIndex, maxIndex, mode, start, count);
+ r300_stencilref_end(r300);
+ }
+}
+
+void r300_plug_in_stencil_ref_fallback(struct r300_context *r300)
+{
+ r300->stencilref_fallback = CALLOC_STRUCT(r300_stencilref_context);
+
+ /* Save original draw functions. */
+ r300->stencilref_fallback->draw_arrays = r300->context.draw_arrays;
+ r300->stencilref_fallback->draw_range_elements = r300->context.draw_range_elements;
+
+ /* Override the draw functions. */
+ r300->context.draw_arrays = r300_stencilref_draw_arrays;
+ r300->context.draw_range_elements = r300_stencilref_draw_range_elements;
+}
projects / mesa.git / commitdiff