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author | Brian <brian.paul@tungstengraphics.com> | 2008-03-20 14:49:56 -0600 |
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committer | Brian <brian.paul@tungstengraphics.com> | 2008-03-20 15:04:08 -0600 |
commit | 3ece9ace540447c4f0d340a6f9f27980b54f83fb (patch) | |
tree | 5c864453a15bbd3c384f618cba8f455e207a77e3 /src/mesa/state_tracker/st_cb_bitmap.c | |
parent | b028d32af4f5e7beeb4e659a4726e0d35d105ccc (diff) | |
download | external_mesa3d-3ece9ace540447c4f0d340a6f9f27980b54f83fb.zip external_mesa3d-3ece9ace540447c4f0d340a6f9f27980b54f83fb.tar.gz external_mesa3d-3ece9ace540447c4f0d340a6f9f27980b54f83fb.tar.bz2 |
gallium: glBitmap code now separated from glDraw/CopyPixels code
Diffstat (limited to 'src/mesa/state_tracker/st_cb_bitmap.c')
-rw-r--r-- | src/mesa/state_tracker/st_cb_bitmap.c | 524 |
1 files changed, 524 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_cb_bitmap.c b/src/mesa/state_tracker/st_cb_bitmap.c new file mode 100644 index 0000000..3325619 --- /dev/null +++ b/src/mesa/state_tracker/st_cb_bitmap.c @@ -0,0 +1,524 @@ +/************************************************************************** + * + * 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: + * Brian Paul + */ + +#include "main/imports.h" +#include "main/image.h" +#include "main/macros.h" +#include "main/texformat.h" +#include "shader/program.h" +#include "shader/prog_parameter.h" +#include "shader/prog_print.h" + +#include "st_context.h" +#include "st_atom.h" +#include "st_atom_constbuf.h" +#include "st_program.h" +#include "st_cb_bitmap.h" +#include "st_mesa_to_tgsi.h" +#include "st_texture.h" +#include "pipe/p_context.h" +#include "pipe/p_defines.h" +#include "pipe/p_inlines.h" +#include "pipe/p_winsys.h" +#include "util/p_tile.h" +#include "util/u_draw_quad.h" +#include "util/u_simple_shaders.h" +#include "shader/prog_instruction.h" +#include "cso_cache/cso_context.h" + + + +/** + * Make fragment program for glBitmap: + * Sample the texture and kill the fragment if the bit is 0. + * This program will be combined with the user's fragment program. + */ +static struct st_fragment_program * +make_bitmap_fragment_program(GLcontext *ctx) +{ + struct st_fragment_program *stfp; + struct gl_program *p; + GLuint ic = 0; + + p = ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0); + if (!p) + return NULL; + + p->NumInstructions = 5; + + p->Instructions = _mesa_alloc_instructions(p->NumInstructions); + if (!p->Instructions) { + ctx->Driver.DeleteProgram(ctx, p); + return NULL; + } + _mesa_init_instructions(p->Instructions, p->NumInstructions); + + /* TEX tmp0, fragment.texcoord[0], texture[0], 2D; */ + p->Instructions[ic].Opcode = OPCODE_TEX; + p->Instructions[ic].DstReg.File = PROGRAM_TEMPORARY; + p->Instructions[ic].DstReg.Index = 0; + p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT; + p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0; + p->Instructions[ic].TexSrcUnit = 0; + p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX; + ic++; + + /* SWZ tmp0.x, tmp0.x, 1111; # tmp0.x = 1.0 */ + p->Instructions[ic].Opcode = OPCODE_SWZ; + p->Instructions[ic].DstReg.File = PROGRAM_TEMPORARY; + p->Instructions[ic].DstReg.Index = 0; + p->Instructions[ic].DstReg.WriteMask = WRITEMASK_X; + p->Instructions[ic].SrcReg[0].File = PROGRAM_TEMPORARY; + p->Instructions[ic].SrcReg[0].Index = 0; + p->Instructions[ic].SrcReg[0].Swizzle + = MAKE_SWIZZLE4(SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE ); + ic++; + + /* SUB tmp0, tmp0.wwww, tmp0.xxxx; # tmp0.w -= 1 */ + p->Instructions[ic].Opcode = OPCODE_SUB; + p->Instructions[ic].DstReg.File = PROGRAM_TEMPORARY; + p->Instructions[ic].DstReg.Index = 0; + p->Instructions[ic].SrcReg[0].File = PROGRAM_TEMPORARY; + p->Instructions[ic].SrcReg[0].Index = 0; + p->Instructions[ic].SrcReg[0].Swizzle = SWIZZLE_WWWW; + p->Instructions[ic].SrcReg[1].File = PROGRAM_TEMPORARY; + p->Instructions[ic].SrcReg[1].Index = 0; + p->Instructions[ic].SrcReg[1].Swizzle = SWIZZLE_XXXX; /* 1.0 */ + ic++; + + /* KIL if tmp0 < 0 */ + p->Instructions[ic].Opcode = OPCODE_KIL; + p->Instructions[ic].SrcReg[0].File = PROGRAM_TEMPORARY; + p->Instructions[ic].SrcReg[0].Index = 0; + ic++; + + /* END; */ + p->Instructions[ic++].Opcode = OPCODE_END; + + assert(ic == p->NumInstructions); + + p->InputsRead = FRAG_BIT_TEX0; + p->OutputsWritten = 0x0; + + stfp = (struct st_fragment_program *) p; + stfp->Base.UsesKill = GL_TRUE; + st_translate_fragment_program(ctx->st, stfp, NULL); + + return stfp; +} + + +/** + * Combine basic bitmap fragment program with the user-defined program. + */ +static struct st_fragment_program * +combined_bitmap_fragment_program(GLcontext *ctx) +{ + struct st_context *st = ctx->st; + struct st_fragment_program *stfp; + + if (!st->bitmap.program) { + /* create the basic bitmap fragment program */ + st->bitmap.program = make_bitmap_fragment_program(ctx); + } + + if (st->bitmap.user_prog_sn == st->fp->serialNo) { + /* re-use */ + stfp = st->bitmap.combined_prog; + } + else { + /* Concatenate the bitmap program with the current user-defined program. + */ + stfp = (struct st_fragment_program *) + _mesa_combine_programs(ctx, + &st->bitmap.program->Base.Base, + &st->fp->Base.Base); + +#if 0 + { + struct gl_program *p = &stfp->Base.Base; + printf("Combined bitmap program:\n"); + _mesa_print_program(p); + printf("InputsRead: 0x%x\n", p->InputsRead); + printf("OutputsWritten: 0x%x\n", p->OutputsWritten); + _mesa_print_parameter_list(p->Parameters); + } +#endif + + /* translate to TGSI tokens */ + st_translate_fragment_program(st, stfp, NULL); + + /* save new program, update serial numbers */ + st->bitmap.user_prog_sn = st->fp->serialNo; + st->bitmap.combined_prog = stfp; + } + + /* Ideally we'd have updated the pipe constants during the normal + * st/atom mechanism. But we can't since this is specific to glBitmap. + */ + st_upload_constants(st, stfp->Base.Base.Parameters, PIPE_SHADER_FRAGMENT); + + return stfp; +} + + + +/** + * Create a texture which represents a bitmap image. + */ +static struct pipe_texture * +make_bitmap_texture(GLcontext *ctx, GLsizei width, GLsizei height, + const struct gl_pixelstore_attrib *unpack, + const GLubyte *bitmap) +{ + struct pipe_context *pipe = ctx->st->pipe; + struct pipe_screen *screen = pipe->screen; + struct pipe_surface *surface; + uint format = 0, cpp, comp; + ubyte *dest; + struct pipe_texture *pt; + int row, col; + + /* find a texture format we know */ + if (screen->is_format_supported( screen, PIPE_FORMAT_U_I8, PIPE_TEXTURE )) { + format = PIPE_FORMAT_U_I8; + cpp = 1; + comp = 0; + } + else if (screen->is_format_supported( screen, PIPE_FORMAT_A8R8G8B8_UNORM, PIPE_TEXTURE )) { + format = PIPE_FORMAT_A8R8G8B8_UNORM; + cpp = 4; + comp = 3; /* alpha channel */ /*XXX little-endian dependency */ + } + else { + /* XXX support more formats */ + assert( 0 ); + } + + /** + * Create a texture. + */ + pt = st_texture_create(ctx->st, PIPE_TEXTURE_2D, format, 0, width, height, + 1, 0); + if (!pt) + return NULL; + + if (unpack->BufferObj && unpack->BufferObj->Name) { + /* + pt->region = buffer_object_region(unpack->BufferObj); + */ + printf("st_Bitmap (sourcing from PBO not implemented yet)\n"); + } + + surface = screen->get_tex_surface(screen, pt, 0, 0, 0); + + /* map texture surface */ + dest = pipe_surface_map(surface); + + /* Put image into texture surface. + * Note that the image is actually going to be upside down in + * the texture. We deal with that with texcoords. + */ + + for (row = 0; row < height; row++) { + const GLubyte *src = (const GLubyte *) _mesa_image_address2d(unpack, + bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0); + ubyte *destRow = dest + row * surface->pitch * cpp; + + if (unpack->LsbFirst) { + /* Lsb first */ + GLubyte mask = 1U << (unpack->SkipPixels & 0x7); + for (col = 0; col < width; col++) { + + /* set texel to 255 if bit is set */ + destRow[comp] = (*src & mask) ? 255 : 0; + destRow += cpp; + + if (mask == 128U) { + src++; + mask = 1U; + } + else { + mask = mask << 1; + } + } + + /* get ready for next row */ + if (mask != 1) + src++; + } + else { + /* Msb first */ + GLubyte mask = 128U >> (unpack->SkipPixels & 0x7); + for (col = 0; col < width; col++) { + + /* set texel to 255 if bit is set */ + destRow[comp] =(*src & mask) ? 255 : 0; + destRow += cpp; + + if (mask == 1U) { + src++; + mask = 128U; + } + else { + mask = mask >> 1; + } + } + + /* get ready for next row */ + if (mask != 128) + src++; + } + + } /* row */ + + /* Release surface */ + pipe_surface_unmap(surface); + pipe_surface_reference(&surface, NULL); + pipe->texture_update(pipe, pt, 0, 0x1); + + pt->format = format; + + return pt; +} + + +static void +setup_bitmap_vertex_data(struct st_context *st, + int x, int y, int width, int height, + float z, const float color[4]) +{ + struct pipe_context *pipe = st->pipe; + const struct gl_framebuffer *fb = st->ctx->DrawBuffer; + const GLboolean invert = (st_fb_orientation(fb) == Y_0_TOP); + const GLfloat x0 = x; + const GLfloat x1 = x + width; + const GLfloat y0 = invert ? (fb->Height - y - height) : y; + const GLfloat y1 = invert ? (y0 + height) : y + height; + const GLfloat bias = st->bitmap_texcoord_bias; + const GLfloat xBias = bias / (x1-x0); + const GLfloat yBias = bias / (y1-y0); + const GLfloat sLeft = 0.0 + xBias, sRight = 1.0 + xBias; + const GLfloat tTop = 1.0 - yBias, tBot = 1.0 - tTop - yBias; + GLuint i; + void *buf; + + if (!st->bitmap.vbuf) { + st->bitmap.vbuf = pipe->winsys->buffer_create(pipe->winsys, 32, + PIPE_BUFFER_USAGE_VERTEX, + sizeof(st->bitmap.vertices)); + } + + /* positions, texcoords */ + st->bitmap.vertices[0][0][0] = x0; + st->bitmap.vertices[0][0][1] = y0; + st->bitmap.vertices[0][2][0] = sLeft; + st->bitmap.vertices[0][2][1] = tTop; + + st->bitmap.vertices[1][0][0] = x1; + st->bitmap.vertices[1][0][1] = y0; + st->bitmap.vertices[1][2][0] = sRight; + st->bitmap.vertices[1][2][1] = tTop; + + st->bitmap.vertices[2][0][0] = x1; + st->bitmap.vertices[2][0][1] = y1; + st->bitmap.vertices[2][2][0] = sRight; + st->bitmap.vertices[2][2][1] = tBot; + + st->bitmap.vertices[3][0][0] = x0; + st->bitmap.vertices[3][0][1] = y1; + st->bitmap.vertices[3][2][0] = sLeft; + st->bitmap.vertices[3][2][1] = tBot; + + /* same for all verts: */ + for (i = 0; i < 4; i++) { + st->bitmap.vertices[i][0][2] = z; + st->bitmap.vertices[i][0][3] = 1.0; + st->bitmap.vertices[i][1][0] = color[0]; + st->bitmap.vertices[i][1][1] = color[1]; + st->bitmap.vertices[i][1][2] = color[2]; + st->bitmap.vertices[i][1][3] = color[3]; + st->bitmap.vertices[i][2][2] = 0.0; /*R*/ + st->bitmap.vertices[i][2][3] = 1.0; /*Q*/ + } + + /* put vertex data into vbuf */ + buf = pipe->winsys->buffer_map(pipe->winsys, st->bitmap.vbuf, + PIPE_BUFFER_USAGE_CPU_WRITE); + memcpy(buf, st->bitmap.vertices, sizeof(st->bitmap.vertices)); + pipe->winsys->buffer_unmap(pipe->winsys, st->bitmap.vbuf); +} + + + +/** + * Render a glBitmap by drawing a textured quad + */ +static void +draw_bitmap_quad(GLcontext *ctx, GLint x, GLint y, GLfloat z, + GLsizei width, GLsizei height, + struct pipe_texture *pt, + struct st_fragment_program *stfp) +{ + struct st_context *st = ctx->st; + struct pipe_context *pipe = ctx->st->pipe; + struct cso_context *cso = ctx->st->cso_context; + GLuint maxSize; + + /* limit checks */ + /* XXX if DrawPixels image is larger than max texture size, break + * it up into chunks. + */ + maxSize = 1 << (pipe->screen->get_param(pipe->screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1); + assert(width <= maxSize); + assert(height <= maxSize); + + cso_save_rasterizer(cso); + //cso_save_viewport(cso); + + /* rasterizer state: just scissor */ + { + struct pipe_rasterizer_state rasterizer; + memset(&rasterizer, 0, sizeof(rasterizer)); + if (ctx->Scissor.Enabled) + rasterizer.scissor = 1; + rasterizer.bypass_clipping = 1; + + cso_set_rasterizer(cso, &rasterizer); + } + + /* fragment shader state: TEX lookup program */ + pipe->bind_fs_state(pipe, stfp->driver_shader); + + /* vertex shader state: position + texcoord pass-through */ + pipe->bind_vs_state(pipe, st->bitmap.vs); + + /* sampler / texture state */ + { + struct pipe_sampler_state sampler; + memset(&sampler, 0, sizeof(sampler)); + sampler.wrap_s = PIPE_TEX_WRAP_CLAMP; + sampler.wrap_t = PIPE_TEX_WRAP_CLAMP; + sampler.wrap_r = PIPE_TEX_WRAP_CLAMP; + sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST; + sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; + sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST; + sampler.normalized_coords = 1; + + cso_single_sampler(cso, 0, &sampler); + cso_single_sampler_done(cso); + + pipe->set_sampler_textures(pipe, 1, &pt); + } + + /* draw textured quad */ + setup_bitmap_vertex_data(st, x, y, width, height, + ctx->Current.RasterPos[2], + ctx->Current.RasterColor); + + util_draw_vertex_buffer(pipe, st->bitmap.vbuf, + PIPE_PRIM_TRIANGLE_FAN, + 4, /* verts */ + 3); /* attribs/vert */ + + + /* restore state */ + cso_restore_rasterizer(cso); + cso_restore_samplers(cso); + //cso_restore_viewport(cso); + /* shaders don't go through cso yet */ + pipe->bind_fs_state(pipe, st->fp->driver_shader); + pipe->bind_vs_state(pipe, st->vp->driver_shader); + + pipe->set_sampler_textures(pipe, ctx->st->state.num_textures, + ctx->st->state.sampler_texture); +} + + + +static void +st_Bitmap(GLcontext *ctx, GLint x, GLint y, GLsizei width, GLsizei height, + const struct gl_pixelstore_attrib *unpack, const GLubyte *bitmap ) +{ + struct st_fragment_program *stfp; + struct st_context *st = ctx->st; + struct pipe_texture *pt; + + stfp = combined_bitmap_fragment_program(ctx); + + if (!st->bitmap.vs) { + /* create pass-through vertex shader now */ + const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, + TGSI_SEMANTIC_COLOR, + TGSI_SEMANTIC_GENERIC }; + const uint semantic_indexes[] = { 0, 0, 0 }; + st->bitmap.vs = util_make_vertex_passthrough_shader(st->pipe, 3, + semantic_names, + semantic_indexes); + } + + st_validate_state(st); + + pt = make_bitmap_texture(ctx, width, height, unpack, bitmap); + if (pt) { + draw_bitmap_quad(ctx, x, y, ctx->Current.RasterPos[2], + width, height, + pt, stfp); + pipe_texture_reference(&pt, NULL); + } +} + + + +void st_init_bitmap_functions(struct dd_function_table *functions) +{ + functions->Bitmap = st_Bitmap; +} + + +void +st_destroy_bitmap(struct st_context *st) +{ + struct pipe_context *pipe = st->pipe; + + /* XXX free frag shader state */ + + if (st->bitmap.vs) { + pipe->delete_vs_state(pipe, st->bitmap.vs); + st->bitmap.vs = NULL; + } + if (st->bitmap.vbuf) { + pipe->winsys->buffer_destroy(pipe->winsys, st->bitmap.vbuf); + st->bitmap.vbuf = NULL; + } +} + |