/************************************************************************** * * 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 * Brian Paul * Ian Romanick */ #include #include "pipe/p_state.h" #include "pipe/p_shader_tokens.h" #include "util/u_math.h" #include "draw/draw_private.h" #include "draw/draw_context.h" #include "cell/common.h" #include "spu_vertex_shader.h" #include "spu_exec.h" #include "spu_main.h" #define MAX_VERTEX_SIZE ((2 + PIPE_MAX_SHADER_OUTPUTS) * 4 * sizeof(float)) #define CLIP_RIGHT_BIT 0x01 #define CLIP_LEFT_BIT 0x02 #define CLIP_TOP_BIT 0x04 #define CLIP_BOTTOM_BIT 0x08 #define CLIP_FAR_BIT 0x10 #define CLIP_NEAR_BIT 0x20 static INLINE float dot4(const float *a, const float *b) { return (a[0]*b[0] + a[1]*b[1] + a[2]*b[2] + a[3]*b[3]); } 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<machine; unsigned int j; ALIGN16_DECL(struct spu_exec_vector, inputs, PIPE_MAX_ATTRIBS); ALIGN16_DECL(struct spu_exec_vector, outputs, PIPE_MAX_ATTRIBS); const float *scale = draw->viewport.scale; const float *trans = draw->viewport.translate; ASSERT(count <= 4); machine->Processor = TGSI_PROCESSOR_VERTEX; ASSERT_ALIGN16(draw->constants); machine->Consts = (float (*)[4]) draw->constants; machine->Inputs = ALIGN16_ASSIGN(inputs); machine->Outputs = ALIGN16_ASSIGN(outputs); spu_vertex_fetch( draw, machine, elts, count ); /* run shader */ spu_exec_machine_run( machine ); /* store machine results */ for (j = 0; j < count; j++) { unsigned slot; float x, y, z, w; unsigned char buffer[sizeof(struct vertex_header) + MAX_VERTEX_SIZE] ALIGN16_ATTRIB; struct vertex_header *const tmpOut = (struct vertex_header *) buffer; const unsigned vert_size = ROUNDUP16(sizeof(struct vertex_header) + (sizeof(float) * 4 * draw->num_vs_outputs)); mfc_get(tmpOut, vOut[j], vert_size, TAG_VERTEX_BUFFER, 0, 0); wait_on_mask(1 << TAG_VERTEX_BUFFER); /* 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 = tmpOut->clip[0] = machine->Outputs[0].xyzw[0].f[j]; y = tmpOut->clip[1] = machine->Outputs[0].xyzw[1].f[j]; z = tmpOut->clip[2] = machine->Outputs[0].xyzw[2].f[j]; w = tmpOut->clip[3] = machine->Outputs[0].xyzw[3].f[j]; tmpOut->clipmask = compute_clipmask(tmpOut->clip, draw->plane, draw->nr_planes); tmpOut->edgeflag = 1; /* divide by w */ w = 1.0f / w; x *= w; y *= w; z *= w; /* Viewport mapping */ tmpOut->data[0][0] = x * scale[0] + trans[0]; tmpOut->data[0][1] = y * scale[1] + trans[1]; tmpOut->data[0][2] = z * scale[2] + trans[2]; tmpOut->data[0][3] = w; /* Remaining attributes are packed into sequential post-transform * vertex attrib slots. */ for (slot = 1; slot < draw->num_vs_outputs; slot++) { tmpOut->data[slot][0] = machine->Outputs[slot].xyzw[0].f[j]; tmpOut->data[slot][1] = machine->Outputs[slot].xyzw[1].f[j]; tmpOut->data[slot][2] = machine->Outputs[slot].xyzw[2].f[j]; tmpOut->data[slot][3] = machine->Outputs[slot].xyzw[3].f[j]; } mfc_put(tmpOut, vOut[j], vert_size, TAG_VERTEX_BUFFER, 0, 0); } /* loop over vertices */ } unsigned char immediates[(sizeof(float) * 4 * TGSI_EXEC_NUM_IMMEDIATES) + 32] ALIGN16_ATTRIB; void spu_bind_vertex_shader(struct spu_vs_context *draw, struct cell_shader_info *vs) { const unsigned immediate_addr = vs->immediates; const unsigned immediate_size = ROUNDUP16((sizeof(float) * 4 * vs->num_immediates) + (immediate_addr & 0x0f)); mfc_get(immediates, immediate_addr & ~0x0f, immediate_size, TAG_VERTEX_BUFFER, 0, 0); draw->machine.Instructions = (struct tgsi_full_instruction *) vs->instructions; draw->machine.NumInstructions = vs->num_instructions; draw->machine.Declarations = (struct tgsi_full_declaration *) vs->declarations; draw->machine.NumDeclarations = vs->num_declarations; draw->num_vs_outputs = vs->num_outputs; /* specify the shader to interpret/execute */ spu_exec_machine_init(&draw->machine, PIPE_MAX_SAMPLERS, NULL /*samplers*/, PIPE_SHADER_VERTEX); wait_on_mask(1 << TAG_VERTEX_BUFFER); (void) memcpy(& draw->machine.Imms, &immediates[immediate_addr & 0x0f], sizeof(float) * 4 * vs->num_immediates); } void spu_execute_vertex_shader(struct spu_vs_context *draw, const struct cell_command_vs *vs) { unsigned i; (void) memcpy(draw->plane, vs->plane, sizeof(float) * 4 * vs->nr_planes); draw->nr_planes = vs->nr_planes; draw->vertex_fetch.nr_attrs = vs->nr_attrs; for (i = 0; i < vs->num_elts; i += 4) { const unsigned batch_size = MIN2(vs->num_elts - i, 4); run_vertex_program(draw, & vs->elts[i], batch_size, &vs->vOut[i]); } }