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Diffstat (limited to 'src/gallium/drivers/softpipe/sp_fs_sse.c')
-rw-r--r--src/gallium/drivers/softpipe/sp_fs_sse.c243
1 files changed, 243 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_fs_sse.c b/src/gallium/drivers/softpipe/sp_fs_sse.c
new file mode 100644
index 0000000000..daa158df7c
--- /dev/null
+++ b/src/gallium/drivers/softpipe/sp_fs_sse.c
@@ -0,0 +1,243 @@
+/**************************************************************************
+ *
+ * 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.
+ *
+ **************************************************************************/
+
+/**
+ * Execute fragment shader using runtime SSE code generation.
+ */
+
+#include "sp_context.h"
+#include "sp_state.h"
+#include "sp_fs.h"
+#include "sp_quad.h"
+
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "util/u_memory.h"
+#include "tgsi/tgsi_exec.h"
+#include "tgsi/tgsi_sse2.h"
+
+
+#if defined(PIPE_ARCH_X86)
+
+#include "rtasm/rtasm_x86sse.h"
+
+
+
+/**
+ * Subclass of sp_fragment_shader
+ */
+struct sp_sse_fragment_shader
+{
+ struct sp_fragment_shader base;
+ struct x86_function sse2_program;
+ tgsi_sse2_fs_function func;
+ float immediates[TGSI_EXEC_NUM_IMMEDIATES][4];
+};
+
+
+/** cast wrapper */
+static INLINE struct sp_sse_fragment_shader *
+sp_sse_fragment_shader(const struct sp_fragment_shader *base)
+{
+ return (struct sp_sse_fragment_shader *) base;
+}
+
+
+static void
+fs_sse_prepare( const struct sp_fragment_shader *base,
+ struct tgsi_exec_machine *machine,
+ struct tgsi_sampler **samplers )
+{
+ machine->Samplers = samplers;
+}
+
+
+
+/**
+ * Compute quad X,Y,Z,W for the four fragments in a quad.
+ *
+ * This should really be part of the compiled shader.
+ */
+static void
+setup_pos_vector(const struct tgsi_interp_coef *coef,
+ float x, float y,
+ struct tgsi_exec_vector *quadpos)
+{
+ uint chan;
+ /* do X */
+ quadpos->xyzw[0].f[0] = x;
+ quadpos->xyzw[0].f[1] = x + 1;
+ quadpos->xyzw[0].f[2] = x;
+ quadpos->xyzw[0].f[3] = x + 1;
+
+ /* do Y */
+ quadpos->xyzw[1].f[0] = y;
+ quadpos->xyzw[1].f[1] = y;
+ quadpos->xyzw[1].f[2] = y + 1;
+ quadpos->xyzw[1].f[3] = y + 1;
+
+ /* do Z and W for all fragments in the quad */
+ for (chan = 2; chan < 4; chan++) {
+ const float dadx = coef->dadx[chan];
+ const float dady = coef->dady[chan];
+ const float a0 = coef->a0[chan] + dadx * x + dady * y;
+ quadpos->xyzw[chan].f[0] = a0;
+ quadpos->xyzw[chan].f[1] = a0 + dadx;
+ quadpos->xyzw[chan].f[2] = a0 + dady;
+ quadpos->xyzw[chan].f[3] = a0 + dadx + dady;
+ }
+}
+
+
+/* TODO: codegenerate the whole run function, skip this wrapper.
+ * TODO: break dependency on tgsi_exec_machine struct
+ * TODO: push Position calculation into the generated shader
+ * TODO: process >1 quad at a time
+ */
+static unsigned
+fs_sse_run( const struct sp_fragment_shader *base,
+ struct tgsi_exec_machine *machine,
+ struct quad_header *quad )
+{
+ struct sp_sse_fragment_shader *shader = sp_sse_fragment_shader(base);
+
+ /* Compute X, Y, Z, W vals for this quad -- place in temp[0] for now */
+ setup_pos_vector(quad->posCoef,
+ (float)quad->input.x0, (float)quad->input.y0,
+ machine->Temps);
+
+ /* init kill mask */
+ tgsi_set_kill_mask(machine, 0x0);
+ tgsi_set_exec_mask(machine, 1, 1, 1, 1);
+
+ shader->func( machine,
+ (const float (*)[4])machine->Consts[0],
+ (const float (*)[4])shader->immediates,
+ machine->InterpCoefs
+ /*, &machine->QuadPos*/
+ );
+
+ quad->inout.mask &= ~(machine->Temps[TGSI_EXEC_TEMP_KILMASK_I].xyzw[TGSI_EXEC_TEMP_KILMASK_C].u[0]);
+ if (quad->inout.mask == 0)
+ return FALSE;
+
+ /* store outputs */
+ {
+ const ubyte *sem_name = base->info.output_semantic_name;
+ const ubyte *sem_index = base->info.output_semantic_index;
+ const uint n = base->info.num_outputs;
+ uint i;
+ for (i = 0; i < n; i++) {
+ switch (sem_name[i]) {
+ case TGSI_SEMANTIC_COLOR:
+ {
+ uint cbuf = sem_index[i];
+
+ assert(sizeof(quad->output.color[cbuf]) ==
+ sizeof(machine->Outputs[i]));
+
+ /* copy float[4][4] result */
+ memcpy(quad->output.color[cbuf],
+ &machine->Outputs[i],
+ sizeof(quad->output.color[0]) );
+ }
+ break;
+ case TGSI_SEMANTIC_POSITION:
+ {
+ uint j;
+ for (j = 0; j < 4; j++) {
+ quad->output.depth[j] = machine->Outputs[0].xyzw[2].f[j];
+ }
+ }
+ break;
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+
+static void
+fs_sse_delete( struct sp_fragment_shader *base )
+{
+ struct sp_sse_fragment_shader *shader = sp_sse_fragment_shader(base);
+
+ x86_release_func( &shader->sse2_program );
+ FREE(shader);
+}
+
+
+struct sp_fragment_shader *
+softpipe_create_fs_sse(struct softpipe_context *softpipe,
+ const struct pipe_shader_state *templ)
+{
+ struct sp_sse_fragment_shader *shader;
+
+ if (!softpipe->use_sse)
+ return NULL;
+
+ shader = CALLOC_STRUCT(sp_sse_fragment_shader);
+ if (!shader)
+ return NULL;
+
+ x86_init_func( &shader->sse2_program );
+
+ if (!tgsi_emit_sse2( templ->tokens, &shader->sse2_program,
+ shader->immediates, FALSE )) {
+ FREE(shader);
+ return NULL;
+ }
+
+ shader->func = (tgsi_sse2_fs_function) x86_get_func( &shader->sse2_program );
+ if (!shader->func) {
+ x86_release_func( &shader->sse2_program );
+ FREE(shader);
+ return NULL;
+ }
+
+ shader->base.shader.tokens = NULL; /* don't hold reference to templ->tokens */
+ shader->base.prepare = fs_sse_prepare;
+ shader->base.run = fs_sse_run;
+ shader->base.delete = fs_sse_delete;
+
+ return &shader->base;
+}
+
+
+#else
+
+/* Maybe put this variant in the header file.
+ */
+struct sp_fragment_shader *
+softpipe_create_fs_sse(struct softpipe_context *softpipe,
+ const struct pipe_shader_state *templ)
+{
+ return NULL;
+}
+
+#endif
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