From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- nx-X11/extras/Mesa/src/mesa/shader/nvvertexec.c | 851 ++++++++++++++++++++++++ 1 file changed, 851 insertions(+) create mode 100644 nx-X11/extras/Mesa/src/mesa/shader/nvvertexec.c (limited to 'nx-X11/extras/Mesa/src/mesa/shader/nvvertexec.c') diff --git a/nx-X11/extras/Mesa/src/mesa/shader/nvvertexec.c b/nx-X11/extras/Mesa/src/mesa/shader/nvvertexec.c new file mode 100644 index 000000000..dd5959688 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/shader/nvvertexec.c @@ -0,0 +1,851 @@ +/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 1999-2005 Brian Paul 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL 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. + */ + +/** + * \file nvvertexec.c + * Code to execute vertex programs. + * \author Brian Paul + */ + +#include "glheader.h" +#include "context.h" +#include "imports.h" +#include "macros.h" +#include "mtypes.h" +#include "nvvertexec.h" +#include "nvvertprog.h" +#include "program.h" +#include "math/m_matrix.h" + + +static const GLfloat ZeroVec[4] = { 0.0F, 0.0F, 0.0F, 0.0F }; + + +/** + * Load/initialize the vertex program registers which need to be set + * per-vertex. + */ +void +_mesa_init_vp_per_vertex_registers(GLcontext *ctx) +{ + /* Input registers get initialized from the current vertex attribs */ + MEMCPY(ctx->VertexProgram.Inputs, ctx->Current.Attrib, + VERT_ATTRIB_MAX * 4 * sizeof(GLfloat)); + + if (ctx->VertexProgram.Current->IsNVProgram) { + GLuint i; + /* Output/result regs are initialized to [0,0,0,1] */ + for (i = 0; i < MAX_NV_VERTEX_PROGRAM_OUTPUTS; i++) { + ASSIGN_4V(ctx->VertexProgram.Outputs[i], 0.0F, 0.0F, 0.0F, 1.0F); + } + /* Temp regs are initialized to [0,0,0,0] */ + for (i = 0; i < MAX_NV_VERTEX_PROGRAM_TEMPS; i++) { + ASSIGN_4V(ctx->VertexProgram.Temporaries[i], 0.0F, 0.0F, 0.0F, 0.0F); + } + ASSIGN_4V(ctx->VertexProgram.AddressReg, 0, 0, 0, 0); + } +} + + + +/** + * Copy the 16 elements of a matrix into four consecutive program + * registers starting at 'pos'. + */ +static void +load_matrix(GLfloat registers[][4], GLuint pos, const GLfloat mat[16]) +{ + GLuint i; + for (i = 0; i < 4; i++) { + registers[pos + i][0] = mat[0 + i]; + registers[pos + i][1] = mat[4 + i]; + registers[pos + i][2] = mat[8 + i]; + registers[pos + i][3] = mat[12 + i]; + } +} + + +/** + * As above, but transpose the matrix. + */ +static void +load_transpose_matrix(GLfloat registers[][4], GLuint pos, + const GLfloat mat[16]) +{ + MEMCPY(registers[pos], mat, 16 * sizeof(GLfloat)); +} + + +/** + * Load program parameter registers with tracked matrices (if NV program) + * or GL state values (if ARB program). + * This needs to be done per glBegin/glEnd, not per-vertex. + */ +void +_mesa_init_vp_per_primitive_registers(GLcontext *ctx) +{ + if (ctx->VertexProgram.Current->IsNVProgram) { + GLuint i; + + for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) { + /* point 'mat' at source matrix */ + GLmatrix *mat; + if (ctx->VertexProgram.TrackMatrix[i] == GL_MODELVIEW) { + mat = ctx->ModelviewMatrixStack.Top; + } + else if (ctx->VertexProgram.TrackMatrix[i] == GL_PROJECTION) { + mat = ctx->ProjectionMatrixStack.Top; + } + else if (ctx->VertexProgram.TrackMatrix[i] == GL_TEXTURE) { + mat = ctx->TextureMatrixStack[ctx->Texture.CurrentUnit].Top; + } + else if (ctx->VertexProgram.TrackMatrix[i] == GL_COLOR) { + mat = ctx->ColorMatrixStack.Top; + } + else if (ctx->VertexProgram.TrackMatrix[i]==GL_MODELVIEW_PROJECTION_NV) { + /* XXX verify the combined matrix is up to date */ + mat = &ctx->_ModelProjectMatrix; + } + else if (ctx->VertexProgram.TrackMatrix[i] >= GL_MATRIX0_NV && + ctx->VertexProgram.TrackMatrix[i] <= GL_MATRIX7_NV) { + GLuint n = ctx->VertexProgram.TrackMatrix[i] - GL_MATRIX0_NV; + ASSERT(n < MAX_PROGRAM_MATRICES); + mat = ctx->ProgramMatrixStack[n].Top; + } + else { + /* no matrix is tracked, but we leave the register values as-is */ + assert(ctx->VertexProgram.TrackMatrix[i] == GL_NONE); + continue; + } + + /* load the matrix */ + if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_IDENTITY_NV) { + load_matrix(ctx->VertexProgram.Parameters, i*4, mat->m); + } + else if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_INVERSE_NV) { + _math_matrix_analyse(mat); /* update the inverse */ + ASSERT(!_math_matrix_is_dirty(mat)); + load_matrix(ctx->VertexProgram.Parameters, i*4, mat->inv); + } + else if (ctx->VertexProgram.TrackMatrixTransform[i] == GL_TRANSPOSE_NV) { + load_transpose_matrix(ctx->VertexProgram.Parameters, i*4, mat->m); + } + else { + assert(ctx->VertexProgram.TrackMatrixTransform[i] + == GL_INVERSE_TRANSPOSE_NV); + _math_matrix_analyse(mat); /* update the inverse */ + ASSERT(!_math_matrix_is_dirty(mat)); + load_transpose_matrix(ctx->VertexProgram.Parameters, i*4, mat->inv); + } + } + } + else { + /* Using and ARB vertex program */ + if (ctx->VertexProgram.Current->Parameters) { + /* Grab the state GL state and put into registers */ + _mesa_load_state_parameters(ctx, + ctx->VertexProgram.Current->Parameters); + } + } +} + + + +/** + * For debugging. Dump the current vertex program machine registers. + */ +void +_mesa_dump_vp_state( const struct gl_vertex_program_state *state ) +{ + int i; + _mesa_printf("VertexIn:\n"); + for (i = 0; i < MAX_NV_VERTEX_PROGRAM_INPUTS; i++) { + _mesa_printf("%d: %f %f %f %f ", i, + state->Inputs[i][0], + state->Inputs[i][1], + state->Inputs[i][2], + state->Inputs[i][3]); + } + _mesa_printf("\n"); + + _mesa_printf("VertexOut:\n"); + for (i = 0; i < MAX_NV_VERTEX_PROGRAM_OUTPUTS; i++) { + _mesa_printf("%d: %f %f %f %f ", i, + state->Outputs[i][0], + state->Outputs[i][1], + state->Outputs[i][2], + state->Outputs[i][3]); + } + _mesa_printf("\n"); + + _mesa_printf("Registers:\n"); + for (i = 0; i < MAX_NV_VERTEX_PROGRAM_TEMPS; i++) { + _mesa_printf("%d: %f %f %f %f ", i, + state->Temporaries[i][0], + state->Temporaries[i][1], + state->Temporaries[i][2], + state->Temporaries[i][3]); + } + _mesa_printf("\n"); + + _mesa_printf("Parameters:\n"); + for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS; i++) { + _mesa_printf("%d: %f %f %f %f ", i, + state->Parameters[i][0], + state->Parameters[i][1], + state->Parameters[i][2], + state->Parameters[i][3]); + } + _mesa_printf("\n"); +} + + + +/** + * Return a pointer to the 4-element float vector specified by the given + * source register. + */ +static INLINE const GLfloat * +get_register_pointer( const struct vp_src_register *source, + const struct gl_vertex_program_state *state ) +{ + if (source->RelAddr) { + const GLint reg = source->Index + state->AddressReg[0]; + ASSERT( (source->File == PROGRAM_ENV_PARAM) || + (source->File == PROGRAM_STATE_VAR) ); + if (reg < 0 || reg > MAX_NV_VERTEX_PROGRAM_PARAMS) + return ZeroVec; + else if (source->File == PROGRAM_ENV_PARAM) + return state->Parameters[reg]; + else + return state->Current->Parameters->ParameterValues[reg]; + } + else { + switch (source->File) { + case PROGRAM_TEMPORARY: + ASSERT(source->Index < MAX_NV_VERTEX_PROGRAM_TEMPS); + return state->Temporaries[source->Index]; + case PROGRAM_INPUT: + ASSERT(source->Index < MAX_NV_VERTEX_PROGRAM_INPUTS); + return state->Inputs[source->Index]; + case PROGRAM_OUTPUT: + /* This is only needed for the PRINT instruction */ + ASSERT(source->Index < MAX_NV_VERTEX_PROGRAM_OUTPUTS); + return state->Outputs[source->Index]; + case PROGRAM_LOCAL_PARAM: + ASSERT(source->Index < MAX_PROGRAM_LOCAL_PARAMS); + return state->Current->Base.LocalParams[source->Index]; + case PROGRAM_ENV_PARAM: + ASSERT(source->Index < MAX_NV_VERTEX_PROGRAM_PARAMS); + return state->Parameters[source->Index]; + case PROGRAM_STATE_VAR: + ASSERT(source->Index < state->Current->Parameters->NumParameters); + return state->Current->Parameters->ParameterValues[source->Index]; + default: + _mesa_problem(NULL, + "Bad source register file in get_register_pointer"); + return NULL; + } + } + return NULL; +} + + +/** + * Fetch a 4-element float vector from the given source register. + * Apply swizzling and negating as needed. + */ +static INLINE void +fetch_vector4( const struct vp_src_register *source, + const struct gl_vertex_program_state *state, + GLfloat result[4] ) +{ + const GLfloat *src = get_register_pointer(source, state); + + if (source->Negate) { + result[0] = -src[GET_SWZ(source->Swizzle, 0)]; + result[1] = -src[GET_SWZ(source->Swizzle, 1)]; + result[2] = -src[GET_SWZ(source->Swizzle, 2)]; + result[3] = -src[GET_SWZ(source->Swizzle, 3)]; + } + else { + result[0] = src[GET_SWZ(source->Swizzle, 0)]; + result[1] = src[GET_SWZ(source->Swizzle, 1)]; + result[2] = src[GET_SWZ(source->Swizzle, 2)]; + result[3] = src[GET_SWZ(source->Swizzle, 3)]; + } +} + + + +/** + * As above, but only return result[0] element. + */ +static INLINE void +fetch_vector1( const struct vp_src_register *source, + const struct gl_vertex_program_state *state, + GLfloat result[4] ) +{ + const GLfloat *src = get_register_pointer(source, state); + + if (source->Negate) { + result[0] = -src[GET_SWZ(source->Swizzle, 0)]; + } + else { + result[0] = src[GET_SWZ(source->Swizzle, 0)]; + } +} + + +/** + * Store 4 floats into a register. + */ +static void +store_vector4( const struct vp_dst_register *dest, + struct gl_vertex_program_state *state, + const GLfloat value[4] ) +{ + GLfloat *dst; + switch (dest->File) { + case PROGRAM_TEMPORARY: + dst = state->Temporaries[dest->Index]; + break; + case PROGRAM_OUTPUT: + dst = state->Outputs[dest->Index]; + break; + case PROGRAM_ENV_PARAM: + { + /* a slight hack */ + GET_CURRENT_CONTEXT(ctx); + dst = ctx->VertexProgram.Parameters[dest->Index]; + } + break; + default: + _mesa_problem(NULL, "Invalid register file in store_vector4(file=%d)", + dest->File); + return; + } + + if (dest->WriteMask & WRITEMASK_X) + dst[0] = value[0]; + if (dest->WriteMask & WRITEMASK_Y) + dst[1] = value[1]; + if (dest->WriteMask & WRITEMASK_Z) + dst[2] = value[2]; + if (dest->WriteMask & WRITEMASK_W) + dst[3] = value[3]; +} + + +/** + * Set x to positive or negative infinity. + */ +#if defined(USE_IEEE) || defined(_WIN32) +#define SET_POS_INFINITY(x) ( *((GLuint *) (void *)&x) = 0x7F800000 ) +#define SET_NEG_INFINITY(x) ( *((GLuint *) (void *)&x) = 0xFF800000 ) +#elif defined(VMS) +#define SET_POS_INFINITY(x) x = __MAXFLOAT +#define SET_NEG_INFINITY(x) x = -__MAXFLOAT +#else +#define SET_POS_INFINITY(x) x = (GLfloat) HUGE_VAL +#define SET_NEG_INFINITY(x) x = (GLfloat) -HUGE_VAL +#endif + +#define SET_FLOAT_BITS(x, bits) ((fi_type *) (void *) &(x))->i = bits + + +/** + * Execute the given vertex program + */ +void +_mesa_exec_vertex_program(GLcontext *ctx, const struct vertex_program *program) +{ + struct gl_vertex_program_state *state = &ctx->VertexProgram; + const struct vp_instruction *inst; + + ctx->_CurrentProgram = GL_VERTEX_PROGRAM_ARB; /* or NV, doesn't matter */ + + /* If the program is position invariant, multiply the input + * position and the MVP matrix and stick it into the output pos slot + */ + if (ctx->VertexProgram.Current->IsPositionInvariant) { + TRANSFORM_POINT( ctx->VertexProgram.Outputs[0], + ctx->_ModelProjectMatrix.m, + ctx->VertexProgram.Inputs[0]); + + /* XXX: This could go elsewhere */ + ctx->VertexProgram.Current->OutputsWritten |= 0x1; + } + for (inst = program->Instructions; ; inst++) { + + if (ctx->VertexProgram.CallbackEnabled && + ctx->VertexProgram.Callback) { + ctx->VertexProgram.CurrentPosition = inst->StringPos; + ctx->VertexProgram.Callback(program->Base.Target, + ctx->VertexProgram.CallbackData); + } + + switch (inst->Opcode) { + case VP_OPCODE_MOV: + { + GLfloat t[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_LIT: + { + const GLfloat epsilon = 1.0F / 256.0F; /* per NV spec */ + GLfloat t[4], lit[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + t[0] = MAX2(t[0], 0.0F); + t[1] = MAX2(t[1], 0.0F); + t[3] = CLAMP(t[3], -(128.0F - epsilon), (128.0F - epsilon)); + lit[0] = 1.0; + lit[1] = t[0]; + lit[2] = (t[0] > 0.0) ? (GLfloat) _mesa_pow(t[1], t[3]) : 0.0F; + lit[3] = 1.0; + store_vector4( &inst->DstReg, state, lit ); + } + break; + case VP_OPCODE_RCP: + { + GLfloat t[4]; + fetch_vector1( &inst->SrcReg[0], state, t ); + if (t[0] != 1.0F) + t[0] = 1.0F / t[0]; /* div by zero is infinity! */ + t[1] = t[2] = t[3] = t[0]; + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_RSQ: + { + GLfloat t[4]; + fetch_vector1( &inst->SrcReg[0], state, t ); + t[0] = INV_SQRTF(FABSF(t[0])); + t[1] = t[2] = t[3] = t[0]; + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_EXP: + { + GLfloat t[4], q[4], floor_t0; + fetch_vector1( &inst->SrcReg[0], state, t ); + floor_t0 = (float) floor(t[0]); + if (floor_t0 > FLT_MAX_EXP) { + SET_POS_INFINITY(q[0]); + SET_POS_INFINITY(q[2]); + } + else if (floor_t0 < FLT_MIN_EXP) { + q[0] = 0.0F; + q[2] = 0.0F; + } + else { +#ifdef USE_IEEE + GLint ii = (GLint) floor_t0; + ii = (ii < 23) + 0x3f800000; + SET_FLOAT_BITS(q[0], ii); + q[0] = *((GLfloat *) (void *)&ii); +#else + q[0] = (GLfloat) pow(2.0, floor_t0); +#endif + q[2] = (GLfloat) (q[0] * LOG2(q[1])); + } + q[1] = t[0] - floor_t0; + q[3] = 1.0F; + store_vector4( &inst->DstReg, state, q ); + } + break; + case VP_OPCODE_LOG: + { + GLfloat t[4], q[4], abs_t0; + fetch_vector1( &inst->SrcReg[0], state, t ); + abs_t0 = (GLfloat) fabs(t[0]); + if (abs_t0 != 0.0F) { + /* Since we really can't handle infinite values on VMS + * like other OSes we'll use __MAXFLOAT to represent + * infinity. This may need some tweaking. + */ +#ifdef VMS + if (abs_t0 == __MAXFLOAT) +#else + if (IS_INF_OR_NAN(abs_t0)) +#endif + { + SET_POS_INFINITY(q[0]); + q[1] = 1.0F; + SET_POS_INFINITY(q[2]); + } + else { + int exponent; + double mantissa = frexp(t[0], &exponent); + q[0] = (GLfloat) (exponent - 1); + q[1] = (GLfloat) (2.0 * mantissa); /* map [.5, 1) -> [1, 2) */ + q[2] = (GLfloat) (q[0] + LOG2(q[1])); + } + } + else { + SET_NEG_INFINITY(q[0]); + q[1] = 1.0F; + SET_NEG_INFINITY(q[2]); + } + q[3] = 1.0; + store_vector4( &inst->DstReg, state, q ); + } + break; + case VP_OPCODE_MUL: + { + GLfloat t[4], u[4], prod[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + prod[0] = t[0] * u[0]; + prod[1] = t[1] * u[1]; + prod[2] = t[2] * u[2]; + prod[3] = t[3] * u[3]; + store_vector4( &inst->DstReg, state, prod ); + } + break; + case VP_OPCODE_ADD: + { + GLfloat t[4], u[4], sum[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + sum[0] = t[0] + u[0]; + sum[1] = t[1] + u[1]; + sum[2] = t[2] + u[2]; + sum[3] = t[3] + u[3]; + store_vector4( &inst->DstReg, state, sum ); + } + break; + case VP_OPCODE_DP3: + { + GLfloat t[4], u[4], dot[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + dot[0] = t[0] * u[0] + t[1] * u[1] + t[2] * u[2]; + dot[1] = dot[2] = dot[3] = dot[0]; + store_vector4( &inst->DstReg, state, dot ); + } + break; + case VP_OPCODE_DP4: + { + GLfloat t[4], u[4], dot[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + dot[0] = t[0] * u[0] + t[1] * u[1] + t[2] * u[2] + t[3] * u[3]; + dot[1] = dot[2] = dot[3] = dot[0]; + store_vector4( &inst->DstReg, state, dot ); + } + break; + case VP_OPCODE_DST: + { + GLfloat t[4], u[4], dst[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + dst[0] = 1.0F; + dst[1] = t[1] * u[1]; + dst[2] = t[2]; + dst[3] = u[3]; + store_vector4( &inst->DstReg, state, dst ); + } + break; + case VP_OPCODE_MIN: + { + GLfloat t[4], u[4], min[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + min[0] = (t[0] < u[0]) ? t[0] : u[0]; + min[1] = (t[1] < u[1]) ? t[1] : u[1]; + min[2] = (t[2] < u[2]) ? t[2] : u[2]; + min[3] = (t[3] < u[3]) ? t[3] : u[3]; + store_vector4( &inst->DstReg, state, min ); + } + break; + case VP_OPCODE_MAX: + { + GLfloat t[4], u[4], max[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + max[0] = (t[0] > u[0]) ? t[0] : u[0]; + max[1] = (t[1] > u[1]) ? t[1] : u[1]; + max[2] = (t[2] > u[2]) ? t[2] : u[2]; + max[3] = (t[3] > u[3]) ? t[3] : u[3]; + store_vector4( &inst->DstReg, state, max ); + } + break; + case VP_OPCODE_SLT: + { + GLfloat t[4], u[4], slt[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + slt[0] = (t[0] < u[0]) ? 1.0F : 0.0F; + slt[1] = (t[1] < u[1]) ? 1.0F : 0.0F; + slt[2] = (t[2] < u[2]) ? 1.0F : 0.0F; + slt[3] = (t[3] < u[3]) ? 1.0F : 0.0F; + store_vector4( &inst->DstReg, state, slt ); + } + break; + case VP_OPCODE_SGE: + { + GLfloat t[4], u[4], sge[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + sge[0] = (t[0] >= u[0]) ? 1.0F : 0.0F; + sge[1] = (t[1] >= u[1]) ? 1.0F : 0.0F; + sge[2] = (t[2] >= u[2]) ? 1.0F : 0.0F; + sge[3] = (t[3] >= u[3]) ? 1.0F : 0.0F; + store_vector4( &inst->DstReg, state, sge ); + } + break; + case VP_OPCODE_MAD: + { + GLfloat t[4], u[4], v[4], sum[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + fetch_vector4( &inst->SrcReg[2], state, v ); + sum[0] = t[0] * u[0] + v[0]; + sum[1] = t[1] * u[1] + v[1]; + sum[2] = t[2] * u[2] + v[2]; + sum[3] = t[3] * u[3] + v[3]; + store_vector4( &inst->DstReg, state, sum ); + } + break; + case VP_OPCODE_ARL: + { + GLfloat t[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + state->AddressReg[0] = (GLint) floor(t[0]); + } + break; + case VP_OPCODE_DPH: + { + GLfloat t[4], u[4], dot[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + dot[0] = t[0] * u[0] + t[1] * u[1] + t[2] * u[2] + u[3]; + dot[1] = dot[2] = dot[3] = dot[0]; + store_vector4( &inst->DstReg, state, dot ); + } + break; + case VP_OPCODE_RCC: + { + GLfloat t[4], u; + fetch_vector1( &inst->SrcReg[0], state, t ); + if (t[0] == 1.0F) + u = 1.0F; + else + u = 1.0F / t[0]; + if (u > 0.0F) { + if (u > 1.884467e+019F) { + u = 1.884467e+019F; /* IEEE 32-bit binary value 0x5F800000 */ + } + else if (u < 5.42101e-020F) { + u = 5.42101e-020F; /* IEEE 32-bit binary value 0x1F800000 */ + } + } + else { + if (u < -1.884467e+019F) { + u = -1.884467e+019F; /* IEEE 32-bit binary value 0xDF800000 */ + } + else if (u > -5.42101e-020F) { + u = -5.42101e-020F; /* IEEE 32-bit binary value 0x9F800000 */ + } + } + t[0] = t[1] = t[2] = t[3] = u; + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_SUB: /* GL_NV_vertex_program1_1 */ + { + GLfloat t[4], u[4], sum[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + sum[0] = t[0] - u[0]; + sum[1] = t[1] - u[1]; + sum[2] = t[2] - u[2]; + sum[3] = t[3] - u[3]; + store_vector4( &inst->DstReg, state, sum ); + } + break; + case VP_OPCODE_ABS: /* GL_NV_vertex_program1_1 */ + { + GLfloat t[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + if (t[0] < 0.0) t[0] = -t[0]; + if (t[1] < 0.0) t[1] = -t[1]; + if (t[2] < 0.0) t[2] = -t[2]; + if (t[3] < 0.0) t[3] = -t[3]; + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_FLR: /* GL_ARB_vertex_program */ + { + GLfloat t[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + t[0] = FLOORF(t[0]); + t[1] = FLOORF(t[1]); + t[2] = FLOORF(t[2]); + t[3] = FLOORF(t[3]); + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_FRC: /* GL_ARB_vertex_program */ + { + GLfloat t[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + t[0] = t[0] - FLOORF(t[0]); + t[1] = t[1] - FLOORF(t[1]); + t[2] = t[2] - FLOORF(t[2]); + t[3] = t[3] - FLOORF(t[3]); + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_EX2: /* GL_ARB_vertex_program */ + { + GLfloat t[4]; + fetch_vector1( &inst->SrcReg[0], state, t ); + t[0] = t[1] = t[2] = t[3] = (GLfloat)_mesa_pow(2.0, t[0]); + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_LG2: /* GL_ARB_vertex_program */ + { + GLfloat t[4]; + fetch_vector1( &inst->SrcReg[0], state, t ); + t[0] = t[1] = t[2] = t[3] = LOG2(t[0]); + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_POW: /* GL_ARB_vertex_program */ + { + GLfloat t[4], u[4]; + fetch_vector1( &inst->SrcReg[0], state, t ); + fetch_vector1( &inst->SrcReg[1], state, u ); + t[0] = t[1] = t[2] = t[3] = (GLfloat)_mesa_pow(t[0], u[0]); + store_vector4( &inst->DstReg, state, t ); + } + break; + case VP_OPCODE_XPD: /* GL_ARB_vertex_program */ + { + GLfloat t[4], u[4], cross[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + fetch_vector4( &inst->SrcReg[1], state, u ); + cross[0] = t[1] * u[2] - t[2] * u[1]; + cross[1] = t[2] * u[0] - t[0] * u[2]; + cross[2] = t[0] * u[1] - t[1] * u[0]; + store_vector4( &inst->DstReg, state, cross ); + } + break; + case VP_OPCODE_SWZ: /* GL_ARB_vertex_program */ + { + const struct vp_src_register *source = &inst->SrcReg[0]; + const GLfloat *src = get_register_pointer(source, state); + GLfloat result[4]; + GLuint i; + + /* do extended swizzling here */ + for (i = 0; i < 4; i++) { + if (GET_SWZ(source->Swizzle, i) == SWIZZLE_ZERO) + result[i] = 0.0; + else if (GET_SWZ(source->Swizzle, i) == SWIZZLE_ONE) + result[i] = 1.0; + else + result[i] = src[GET_SWZ(source->Swizzle, i)]; + if (source->Negate & (1 << i)) + result[i] = -result[i]; + } + store_vector4( &inst->DstReg, state, result ); + } + break; + case VP_OPCODE_PRINT: + if (inst->SrcReg[0].File) { + GLfloat t[4]; + fetch_vector4( &inst->SrcReg[0], state, t ); + _mesa_printf("%s%g, %g, %g, %g\n", + (char *) inst->Data, t[0], t[1], t[2], t[3]); + } + else { + _mesa_printf("%s\n", (char *) inst->Data); + } + break; + case VP_OPCODE_END: + ctx->_CurrentProgram = 0; + return; + default: + /* bad instruction opcode */ + _mesa_problem(ctx, "Bad VP Opcode in _mesa_exec_vertex_program"); + ctx->_CurrentProgram = 0; + return; + } /* switch */ + } /* for */ + + ctx->_CurrentProgram = 0; +} + + + +/** +Thoughts on vertex program optimization: + +The obvious thing to do is to compile the vertex program into X86/SSE/3DNow! +assembly code. That will probably be a lot of work. + +Another approach might be to replace the vp_instruction->Opcode field with +a pointer to a specialized C function which executes the instruction. +In particular we can write functions which skip swizzling, negating, +masking, relative addressing, etc. when they're not needed. + +For example: + +void simple_add( struct vp_instruction *inst ) +{ + GLfloat *sum = machine->Registers[inst->DstReg.Register]; + GLfloat *a = machine->Registers[inst->SrcReg[0].Register]; + GLfloat *b = machine->Registers[inst->SrcReg[1].Register]; + sum[0] = a[0] + b[0]; + sum[1] = a[1] + b[1]; + sum[2] = a[2] + b[2]; + sum[3] = a[3] + b[3]; +} + +*/ + +/* + +KW: + +A first step would be to 'vectorize' the programs in the same way as +the normal transformation code in the tnl module. Thus each opcode +takes zero or more input vectors (registers) and produces one or more +output vectors. + +These operations would intially be coded in C, with machine-specific +assembly following, as is currently the case for matrix +transformations in the math/ directory. The preprocessing scheme for +selecting simpler operations Brian describes above would also work +here. + +This should give reasonable performance without excessive effort. + +*/ -- cgit v1.2.3