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Diffstat (limited to 'src/gallium/drivers/i915simple/i915_prim_emit.c')
-rw-r--r--src/gallium/drivers/i915simple/i915_prim_emit.c220
1 files changed, 220 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915simple/i915_prim_emit.c b/src/gallium/drivers/i915simple/i915_prim_emit.c
new file mode 100644
index 0000000000..d194c2fb15
--- /dev/null
+++ b/src/gallium/drivers/i915simple/i915_prim_emit.c
@@ -0,0 +1,220 @@
+/**************************************************************************
+ *
+ * Copyright 2007 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 "draw/draw_pipe.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_pack_color.h"
+
+#include "i915_context.h"
+#include "i915_winsys.h"
+#include "i915_reg.h"
+#include "i915_state.h"
+#include "i915_batch.h"
+
+
+
+/**
+ * Primitive emit to hardware. No support for vertex buffers or any
+ * nice fast paths.
+ */
+struct setup_stage {
+ struct draw_stage stage; /**< This must be first (base class) */
+
+ struct i915_context *i915;
+};
+
+
+
+/**
+ * Basically a cast wrapper.
+ */
+static INLINE struct setup_stage *setup_stage( struct draw_stage *stage )
+{
+ return (struct setup_stage *)stage;
+}
+
+
+/**
+ * Extract the needed fields from vertex_header and emit i915 dwords.
+ * Recall that the vertices are constructed by the 'draw' module and
+ * have a couple of slots at the beginning (1-dword header, 4-dword
+ * clip pos) that we ignore here.
+ */
+static INLINE void
+emit_hw_vertex( struct i915_context *i915,
+ const struct vertex_header *vertex)
+{
+ const struct vertex_info *vinfo = &i915->current.vertex_info;
+ uint i;
+ uint count = 0; /* for debug/sanity */
+
+ assert(!i915->dirty);
+
+ for (i = 0; i < vinfo->num_attribs; i++) {
+ const uint j = vinfo->src_index[i];
+ const float *attrib = vertex->data[j];
+ switch (vinfo->emit[i]) {
+ case EMIT_1F:
+ OUT_BATCH( fui(attrib[0]) );
+ count++;
+ break;
+ case EMIT_2F:
+ OUT_BATCH( fui(attrib[0]) );
+ OUT_BATCH( fui(attrib[1]) );
+ count += 2;
+ break;
+ case EMIT_3F:
+ OUT_BATCH( fui(attrib[0]) );
+ OUT_BATCH( fui(attrib[1]) );
+ OUT_BATCH( fui(attrib[2]) );
+ count += 3;
+ break;
+ case EMIT_4F:
+ OUT_BATCH( fui(attrib[0]) );
+ OUT_BATCH( fui(attrib[1]) );
+ OUT_BATCH( fui(attrib[2]) );
+ OUT_BATCH( fui(attrib[3]) );
+ count += 4;
+ break;
+ case EMIT_4UB:
+ OUT_BATCH( pack_ub4(float_to_ubyte( attrib[2] ),
+ float_to_ubyte( attrib[1] ),
+ float_to_ubyte( attrib[0] ),
+ float_to_ubyte( attrib[3] )) );
+ count += 1;
+ break;
+ default:
+ assert(0);
+ }
+ }
+ assert(count == vinfo->size);
+}
+
+
+
+static INLINE void
+emit_prim( struct draw_stage *stage,
+ struct prim_header *prim,
+ unsigned hwprim,
+ unsigned nr )
+{
+ struct i915_context *i915 = setup_stage(stage)->i915;
+ unsigned vertex_size;
+ unsigned i;
+
+ if (i915->dirty)
+ i915_update_derived( i915 );
+
+ if (i915->hardware_dirty)
+ i915_emit_hardware_state( i915 );
+
+ /* need to do this after validation! */
+ vertex_size = i915->current.vertex_info.size * 4; /* in bytes */
+ assert(vertex_size >= 12); /* never smaller than 12 bytes */
+
+ if (!BEGIN_BATCH( 1 + nr * vertex_size / 4, 0 )) {
+ FLUSH_BATCH(NULL);
+
+ /* Make sure state is re-emitted after a flush:
+ */
+ i915_update_derived( i915 );
+ i915_emit_hardware_state( i915 );
+
+ if (!BEGIN_BATCH( 1 + nr * vertex_size / 4, 0 )) {
+ assert(0);
+ return;
+ }
+ }
+
+ /* Emit each triangle as a single primitive. I told you this was
+ * simple.
+ */
+ OUT_BATCH(_3DPRIMITIVE |
+ hwprim |
+ ((4 + vertex_size * nr)/4 - 2));
+
+ for (i = 0; i < nr; i++)
+ emit_hw_vertex(i915, prim->v[i]);
+}
+
+
+static void
+setup_tri( struct draw_stage *stage, struct prim_header *prim )
+{
+ emit_prim( stage, prim, PRIM3D_TRILIST, 3 );
+}
+
+
+static void
+setup_line(struct draw_stage *stage, struct prim_header *prim)
+{
+ emit_prim( stage, prim, PRIM3D_LINELIST, 2 );
+}
+
+
+static void
+setup_point(struct draw_stage *stage, struct prim_header *prim)
+{
+ emit_prim( stage, prim, PRIM3D_POINTLIST, 1 );
+}
+
+
+static void setup_flush( struct draw_stage *stage, unsigned flags )
+{
+}
+
+static void reset_stipple_counter( struct draw_stage *stage )
+{
+}
+
+static void render_destroy( struct draw_stage *stage )
+{
+ FREE( stage );
+}
+
+
+/**
+ * Create a new primitive setup/render stage. This gets plugged into
+ * the 'draw' module's pipeline.
+ */
+struct draw_stage *i915_draw_render_stage( struct i915_context *i915 )
+{
+ struct setup_stage *setup = CALLOC_STRUCT(setup_stage);
+
+ setup->i915 = i915;
+ setup->stage.draw = i915->draw;
+ setup->stage.point = setup_point;
+ setup->stage.line = setup_line;
+ setup->stage.tri = setup_tri;
+ setup->stage.flush = setup_flush;
+ setup->stage.reset_stipple_counter = reset_stipple_counter;
+ setup->stage.destroy = render_destroy;
+
+ return &setup->stage;
+}