diff options
author | Brian <brian.paul@tungstengraphics.com> | 2007-10-30 11:18:31 -0600 |
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committer | Brian <brian.paul@tungstengraphics.com> | 2007-10-30 11:32:53 -0600 |
commit | 7ce99a11037e577e36480f3e29b2685b853f0330 (patch) | |
tree | 307132b316c627f4d0e44f4be230c6ade2752b50 /src/mesa/state_tracker/st_atom_pixeltransfer.c | |
parent | de38d9c498b999d80b51679ece6b4caccd80a2b8 (diff) |
Rename file since it's now a state atom
Diffstat (limited to 'src/mesa/state_tracker/st_atom_pixeltransfer.c')
-rw-r--r-- | src/mesa/state_tracker/st_atom_pixeltransfer.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_atom_pixeltransfer.c b/src/mesa/state_tracker/st_atom_pixeltransfer.c new file mode 100644 index 0000000000..b1fce81755 --- /dev/null +++ b/src/mesa/state_tracker/st_atom_pixeltransfer.c @@ -0,0 +1,161 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +/* + * Generate fragment programs to implement pixel transfer ops, such as + * scale/bias, colormatrix, colortable, convolution... + * + * Authors: + * Brian Paul + */ + +#include "main/imports.h" +#include "main/image.h" +#include "main/macros.h" +#include "shader/program.h" +#include "shader/prog_instruction.h" +#include "shader/prog_parameter.h" +#include "shader/prog_print.h" + +#include "st_context.h" + + +#define MAX_INST 100 + +/** + * Returns a fragment program which implements the current pixel transfer ops. + */ +static struct gl_fragment_program * +get_pixel_transfer_program(GLcontext *ctx) +{ + struct prog_instruction inst[MAX_INST]; + struct gl_program_parameter_list *params; + struct gl_fragment_program *fp; + GLuint ic = 0; + + fp = (struct gl_fragment_program *) + ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0); + if (!fp) + return NULL; + + params = _mesa_new_parameter_list(); + + /* TEX result.color, fragment.texcoord[0], texture[0], 2D; */ + _mesa_init_instructions(inst + ic, 1); + inst[ic].Opcode = OPCODE_TEX; + inst[ic].DstReg.File = PROGRAM_OUTPUT; + inst[ic].DstReg.Index = FRAG_RESULT_COLR; + inst[ic].SrcReg[0].File = PROGRAM_INPUT; + inst[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0; + inst[ic].TexSrcUnit = 0; + inst[ic].TexSrcTarget = TEXTURE_2D_INDEX; + ic++; + fp->Base.InputsRead = (1 << FRAG_ATTRIB_TEX0); + fp->Base.OutputsWritten = (1 << FRAG_RESULT_COLR); + + /* MAD result.color, result.color, scale, bias; */ + if (ctx->Pixel.RedBias != 0.0 || ctx->Pixel.RedScale != 1.0 || + ctx->Pixel.GreenBias != 0.0 || ctx->Pixel.GreenScale != 1.0 || + ctx->Pixel.BlueBias != 0.0 || ctx->Pixel.BlueScale != 1.0 || + ctx->Pixel.AlphaBias != 0.0 || ctx->Pixel.AlphaScale != 1.0) { + GLfloat scale[4], bias[4]; + GLint scale_p, bias_p; + scale[0] = ctx->Pixel.RedScale; + scale[1] = ctx->Pixel.GreenScale; + scale[2] = ctx->Pixel.BlueScale; + scale[3] = ctx->Pixel.AlphaScale; + bias[0] = ctx->Pixel.RedBias; + bias[1] = ctx->Pixel.GreenBias; + bias[2] = ctx->Pixel.BlueBias; + bias[3] = ctx->Pixel.AlphaBias; + + scale_p = _mesa_add_named_constant(params, "RGBA_scale", scale, 4); + bias_p = _mesa_add_named_constant(params, "RGBA_bias", bias, 4); + + _mesa_init_instructions(inst + ic, 1); + inst[ic].Opcode = OPCODE_MAD; + inst[ic].DstReg.File = PROGRAM_OUTPUT; + inst[ic].DstReg.Index = FRAG_RESULT_COLR; + inst[ic].SrcReg[0].File = PROGRAM_OUTPUT; + inst[ic].SrcReg[0].Index = FRAG_RESULT_COLR; + inst[ic].SrcReg[1].File = PROGRAM_CONSTANT; + inst[ic].SrcReg[1].Index = scale_p; + inst[ic].SrcReg[2].File = PROGRAM_CONSTANT; + inst[ic].SrcReg[2].Index = bias_p; + ic++; + } + + /* END; */ + _mesa_init_instructions(inst + ic, 1); + inst[ic].Opcode = OPCODE_END; + ic++; + + assert(ic <= MAX_INST); + + + fp->Base.Instructions = _mesa_alloc_instructions(ic); + if (!fp->Base.Instructions) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, + "generating pixel transfer program"); + return NULL; + } + + _mesa_copy_instructions(fp->Base.Instructions, inst, ic); + fp->Base.NumInstructions = ic; + fp->Base.Parameters = params; + + printf("========= pixel transfer prog\n"); + _mesa_print_program(&fp->Base); + _mesa_print_parameter_list(fp->Base.Parameters); + + return fp; +} + + + +static void +update_pixel_transfer(struct st_context *st) +{ + /* XXX temporary - implement a program cache */ + GLcontext *ctx = st->ctx; + if (st->pixel_transfer_program) { + ctx->Driver.DeleteProgram(ctx, &st->pixel_transfer_program->Base); + } + + st->pixel_transfer_program = get_pixel_transfer_program(ctx); +} + + + +const struct st_tracked_state st_update_pixel_transfer = { + .name = "st_update_pixel_transfer", + .dirty = { + .mesa = _NEW_PIXEL, + .st = 0, + }, + .update = update_pixel_transfer +}; |