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authorKeith Whitwell <[email protected]>2008-02-15 13:37:01 +0000
committerKeith Whitwell <[email protected]>2008-02-15 13:37:01 +0000
commitb29d8d27292c2ad956d3f0a307603f00ee01af28 (patch)
treefcd90e0489cd26141baa2074847e2a114e5ecdc4 /src/gallium/auxiliary/draw/draw_vs_exec.c
parente822e09b89407d6cb8cd4a79e1c5c1e0955caf64 (diff)
draw: subclass vertex shaders according to execution method
Create new files for shaders compiled/executed with llvm, sse, exec respectively
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_vs_exec.c')
-rw-r--r--src/gallium/auxiliary/draw/draw_vs_exec.c186
1 files changed, 186 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_vs_exec.c b/src/gallium/auxiliary/draw/draw_vs_exec.c
new file mode 100644
index 00000000000..8588879400a
--- /dev/null
+++ b/src/gallium/auxiliary/draw/draw_vs_exec.c
@@ -0,0 +1,186 @@
+/**************************************************************************
+ *
+ * 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.
+ *
+ **************************************************************************/
+
+ /*
+ * Authors:
+ * Keith Whitwell <[email protected]>
+ * Brian Paul
+ */
+
+#include "pipe/p_util.h"
+#include "pipe/p_shader_tokens.h"
+
+#include "draw_private.h"
+#include "draw_context.h"
+#include "draw_vs.h"
+
+
+static INLINE unsigned
+compute_clipmask(const float *clip, /*const*/ float plane[][4], unsigned nr)
+{
+ unsigned mask = 0;
+ unsigned i;
+
+ /* Do the hardwired planes first:
+ */
+ if (-clip[0] + clip[3] < 0) mask |= CLIP_RIGHT_BIT;
+ if ( clip[0] + clip[3] < 0) mask |= CLIP_LEFT_BIT;
+ if (-clip[1] + clip[3] < 0) mask |= CLIP_TOP_BIT;
+ if ( clip[1] + clip[3] < 0) mask |= CLIP_BOTTOM_BIT;
+ if (-clip[2] + clip[3] < 0) mask |= CLIP_FAR_BIT;
+ if ( clip[2] + clip[3] < 0) mask |= CLIP_NEAR_BIT;
+
+ /* Followed by any remaining ones:
+ */
+ for (i = 6; i < nr; i++) {
+ if (dot4(clip, plane[i]) < 0)
+ mask |= (1<<i);
+ }
+
+ return mask;
+}
+
+
+static void
+vs_exec_prepare( struct draw_vertex_shader *shader,
+ struct draw_context *draw )
+{
+ /* specify the vertex program to interpret/execute */
+ tgsi_exec_machine_bind_shader(&draw->machine,
+ shader->state->tokens,
+ PIPE_MAX_SAMPLERS,
+ NULL /*samplers*/ );
+
+ draw_update_vertex_fetch( draw );
+}
+
+
+/**
+ * Transform vertices with the current vertex program/shader
+ * Up to four vertices can be shaded at a time.
+ * \param vbuffer the input vertex data
+ * \param elts indexes of four input vertices
+ * \param count number of vertices to shade [1..4]
+ * \param vOut array of pointers to four output vertices
+ */
+static void
+vs_exec_run( struct draw_vertex_shader *shader,
+ struct draw_context *draw,
+ const unsigned *elts,
+ unsigned count,
+ struct vertex_header *vOut[] )
+{
+ struct tgsi_exec_machine *machine = &draw->machine;
+ unsigned int j;
+
+ ALIGN16_DECL(struct tgsi_exec_vector, inputs, PIPE_ATTRIB_MAX);
+ ALIGN16_DECL(struct tgsi_exec_vector, outputs, PIPE_ATTRIB_MAX);
+ const float *scale = draw->viewport.scale;
+ const float *trans = draw->viewport.translate;
+
+ assert(count <= 4);
+ assert(draw->vertex_shader->state->output_semantic_name[0]
+ == TGSI_SEMANTIC_POSITION);
+
+ machine->Consts = (float (*)[4]) draw->user.constants;
+ machine->Inputs = ALIGN16_ASSIGN(inputs);
+ machine->Outputs = ALIGN16_ASSIGN(outputs);
+
+ draw->vertex_fetch.fetch_func( draw, machine, elts, count );
+
+ /* run interpreter */
+ tgsi_exec_machine_run( machine );
+
+
+ /* store machine results */
+ for (j = 0; j < count; j++) {
+ unsigned slot;
+ float x, y, z, w;
+
+ /* Handle attr[0] (position) specially:
+ *
+ * XXX: Computing the clipmask should be done in the vertex
+ * program as a set of DP4 instructions appended to the
+ * user-provided code.
+ */
+ x = vOut[j]->clip[0] = machine->Outputs[0].xyzw[0].f[j];
+ y = vOut[j]->clip[1] = machine->Outputs[0].xyzw[1].f[j];
+ z = vOut[j]->clip[2] = machine->Outputs[0].xyzw[2].f[j];
+ w = vOut[j]->clip[3] = machine->Outputs[0].xyzw[3].f[j];
+
+ vOut[j]->clipmask = compute_clipmask(vOut[j]->clip, draw->plane, draw->nr_planes);
+ vOut[j]->edgeflag = 1;
+
+ /* divide by w */
+ w = 1.0f / w;
+ x *= w;
+ y *= w;
+ z *= w;
+
+ /* Viewport mapping */
+ vOut[j]->data[0][0] = x * scale[0] + trans[0];
+ vOut[j]->data[0][1] = y * scale[1] + trans[1];
+ vOut[j]->data[0][2] = z * scale[2] + trans[2];
+ vOut[j]->data[0][3] = w;
+
+ /* Remaining attributes are packed into sequential post-transform
+ * vertex attrib slots.
+ */
+ for (slot = 1; slot < draw->num_vs_outputs; slot++) {
+ vOut[j]->data[slot][0] = machine->Outputs[slot].xyzw[0].f[j];
+ vOut[j]->data[slot][1] = machine->Outputs[slot].xyzw[1].f[j];
+ vOut[j]->data[slot][2] = machine->Outputs[slot].xyzw[2].f[j];
+ vOut[j]->data[slot][3] = machine->Outputs[slot].xyzw[3].f[j];
+ }
+ } /* loop over vertices */
+}
+
+
+
+static void
+vs_exec_delete( struct draw_vertex_shader *dvs )
+{
+ FREE( dvs );
+}
+
+
+struct draw_vertex_shader *
+draw_create_vs_exec(struct draw_context *draw,
+ const struct pipe_shader_state *state)
+{
+ struct draw_vertex_shader *vs = CALLOC_STRUCT( draw_vertex_shader );
+
+ if (vs == NULL)
+ return NULL;
+
+ vs->state = state;
+ vs->prepare = vs_exec_prepare;
+ vs->run = vs_exec_run;
+ vs->delete = vs_exec_delete;
+
+ return vs;
+}