| /************************************************************************** |
| * |
| * 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/bufferobj.h" |
| #include "main/macros.h" |
| #include "main/mfeatures.h" |
| #include "main/pbo.h" |
| #include "program/program.h" |
| #include "program/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_texture.h" |
| |
| #include "pipe/p_context.h" |
| #include "pipe/p_defines.h" |
| #include "pipe/p_shader_tokens.h" |
| #include "util/u_inlines.h" |
| #include "util/u_draw_quad.h" |
| #include "util/u_simple_shaders.h" |
| #include "util/u_upload_mgr.h" |
| #include "program/prog_instruction.h" |
| #include "cso_cache/cso_context.h" |
| |
| |
| #if FEATURE_drawpix |
| |
| /** |
| * glBitmaps are drawn as textured quads. The user's bitmap pattern |
| * is stored in a texture image. An alpha8 texture format is used. |
| * The fragment shader samples a bit (texel) from the texture, then |
| * discards the fragment if the bit is off. |
| * |
| * Note that we actually store the inverse image of the bitmap to |
| * simplify the fragment program. An "on" bit gets stored as texel=0x0 |
| * and an "off" bit is stored as texel=0xff. Then we kill the |
| * fragment if the negated texel value is less than zero. |
| */ |
| |
| |
| /** |
| * The bitmap cache attempts to accumulate multiple glBitmap calls in a |
| * buffer which is then rendered en mass upon a flush, state change, etc. |
| * A wide, short buffer is used to target the common case of a series |
| * of glBitmap calls being used to draw text. |
| */ |
| static GLboolean UseBitmapCache = GL_TRUE; |
| |
| |
| #define BITMAP_CACHE_WIDTH 512 |
| #define BITMAP_CACHE_HEIGHT 32 |
| |
| struct bitmap_cache |
| { |
| /** Window pos to render the cached image */ |
| GLint xpos, ypos; |
| /** Bounds of region used in window coords */ |
| GLint xmin, ymin, xmax, ymax; |
| |
| GLfloat color[4]; |
| |
| /** Bitmap's Z position */ |
| GLfloat zpos; |
| |
| struct pipe_resource *texture; |
| struct pipe_transfer *trans; |
| |
| GLboolean empty; |
| |
| /** An I8 texture image: */ |
| ubyte *buffer; |
| }; |
| |
| |
| /** Epsilon for Z comparisons */ |
| #define Z_EPSILON 1e-06 |
| |
| |
| /** |
| * 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(struct gl_context *ctx, GLuint samplerIndex) |
| { |
| struct st_context *st = st_context(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 = 3; |
| |
| 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 = samplerIndex; |
| p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX; |
| ic++; |
| |
| /* KIL if -tmp0 < 0 # texel=0 -> keep / texel=0 -> discard */ |
| p->Instructions[ic].Opcode = OPCODE_KIL; |
| p->Instructions[ic].SrcReg[0].File = PROGRAM_TEMPORARY; |
| |
| if (st->bitmap.tex_format == PIPE_FORMAT_L8_UNORM) |
| p->Instructions[ic].SrcReg[0].Swizzle = SWIZZLE_XXXX; |
| |
| p->Instructions[ic].SrcReg[0].Index = 0; |
| p->Instructions[ic].SrcReg[0].Negate = NEGATE_XYZW; |
| ic++; |
| |
| /* END; */ |
| p->Instructions[ic++].Opcode = OPCODE_END; |
| |
| assert(ic == p->NumInstructions); |
| |
| p->InputsRead = FRAG_BIT_TEX0; |
| p->OutputsWritten = 0x0; |
| p->SamplersUsed = (1 << samplerIndex); |
| |
| stfp = (struct st_fragment_program *) p; |
| stfp->Base.UsesKill = GL_TRUE; |
| |
| return stfp; |
| } |
| |
| |
| static struct gl_program * |
| make_bitmap_fragment_program_glsl(struct st_context *st, |
| struct st_fragment_program *orig, |
| GLuint samplerIndex) |
| { |
| struct gl_context *ctx = st->ctx; |
| struct st_fragment_program *fp = (struct st_fragment_program *) |
| ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0); |
| |
| if (!fp) |
| return NULL; |
| |
| get_bitmap_visitor(fp, orig->glsl_to_tgsi, samplerIndex); |
| return &fp->Base.Base; |
| } |
| |
| |
| static int |
| find_free_bit(uint bitfield) |
| { |
| int i; |
| for (i = 0; i < 32; i++) { |
| if ((bitfield & (1 << i)) == 0) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| |
| /** |
| * Combine basic bitmap fragment program with the user-defined program. |
| * \param st current context |
| * \param fpIn the incoming fragment program |
| * \param fpOut the new fragment program which does fragment culling |
| * \param bitmap_sampler sampler number for the bitmap texture |
| */ |
| void |
| st_make_bitmap_fragment_program(struct st_context *st, |
| struct gl_fragment_program *fpIn, |
| struct gl_fragment_program **fpOut, |
| GLuint *bitmap_sampler) |
| { |
| struct st_fragment_program *bitmap_prog; |
| struct st_fragment_program *stfpIn = (struct st_fragment_program *) fpIn; |
| struct gl_program *newProg; |
| uint sampler; |
| |
| /* |
| * Generate new program which is the user-defined program prefixed |
| * with the bitmap sampler/kill instructions. |
| */ |
| sampler = find_free_bit(fpIn->Base.SamplersUsed); |
| |
| if (stfpIn->glsl_to_tgsi) |
| newProg = make_bitmap_fragment_program_glsl(st, stfpIn, sampler); |
| else { |
| bitmap_prog = make_bitmap_fragment_program(st->ctx, sampler); |
| |
| newProg = _mesa_combine_programs(st->ctx, |
| &bitmap_prog->Base.Base, |
| &fpIn->Base); |
| /* done with this after combining */ |
| st_reference_fragprog(st, &bitmap_prog, NULL); |
| } |
| |
| #if 0 |
| { |
| printf("Combined bitmap program:\n"); |
| _mesa_print_program(newProg); |
| printf("InputsRead: 0x%x\n", newProg->InputsRead); |
| printf("OutputsWritten: 0x%x\n", newProg->OutputsWritten); |
| _mesa_print_parameter_list(newProg->Parameters); |
| } |
| #endif |
| |
| /* return results */ |
| *fpOut = (struct gl_fragment_program *) newProg; |
| *bitmap_sampler = sampler; |
| } |
| |
| |
| /** |
| * Copy user-provide bitmap bits into texture buffer, expanding |
| * bits into texels. |
| * "On" bits will set texels to 0x0. |
| * "Off" bits will not modify texels. |
| * Note that the image is actually going to be upside down in |
| * the texture. We deal with that with texcoords. |
| */ |
| static void |
| unpack_bitmap(struct st_context *st, |
| GLint px, GLint py, GLsizei width, GLsizei height, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLubyte *bitmap, |
| ubyte *destBuffer, uint destStride) |
| { |
| destBuffer += py * destStride + px; |
| |
| _mesa_expand_bitmap(width, height, unpack, bitmap, |
| destBuffer, destStride, 0x0); |
| } |
| |
| |
| /** |
| * Create a texture which represents a bitmap image. |
| */ |
| static struct pipe_resource * |
| make_bitmap_texture(struct gl_context *ctx, GLsizei width, GLsizei height, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLubyte *bitmap) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_transfer *transfer; |
| ubyte *dest; |
| struct pipe_resource *pt; |
| |
| /* PBO source... */ |
| bitmap = _mesa_map_pbo_source(ctx, unpack, bitmap); |
| if (!bitmap) { |
| return NULL; |
| } |
| |
| /** |
| * Create texture to hold bitmap pattern. |
| */ |
| pt = st_texture_create(st, st->internal_target, st->bitmap.tex_format, |
| 0, width, height, 1, 1, |
| PIPE_BIND_SAMPLER_VIEW); |
| if (!pt) { |
| _mesa_unmap_pbo_source(ctx, unpack); |
| return NULL; |
| } |
| |
| transfer = pipe_get_transfer(st->pipe, pt, 0, 0, |
| PIPE_TRANSFER_WRITE, |
| 0, 0, width, height); |
| |
| dest = pipe_transfer_map(pipe, transfer); |
| |
| /* Put image into texture transfer */ |
| memset(dest, 0xff, height * transfer->stride); |
| unpack_bitmap(st, 0, 0, width, height, unpack, bitmap, |
| dest, transfer->stride); |
| |
| _mesa_unmap_pbo_source(ctx, unpack); |
| |
| /* Release transfer */ |
| pipe_transfer_unmap(pipe, transfer); |
| pipe->transfer_destroy(pipe, transfer); |
| |
| return pt; |
| } |
| |
| static void |
| setup_bitmap_vertex_data(struct st_context *st, bool normalized, |
| int x, int y, int width, int height, |
| float z, const float color[4], |
| struct pipe_resource **vbuf, |
| unsigned *vbuf_offset) |
| { |
| const GLfloat fb_width = (GLfloat)st->state.framebuffer.width; |
| const GLfloat fb_height = (GLfloat)st->state.framebuffer.height; |
| const GLfloat x0 = (GLfloat)x; |
| const GLfloat x1 = (GLfloat)(x + width); |
| const GLfloat y0 = (GLfloat)y; |
| const GLfloat y1 = (GLfloat)(y + height); |
| GLfloat sLeft = (GLfloat)0.0, sRight = (GLfloat)1.0; |
| GLfloat tTop = (GLfloat)0.0, tBot = (GLfloat)1.0 - tTop; |
| const GLfloat clip_x0 = (GLfloat)(x0 / fb_width * 2.0 - 1.0); |
| const GLfloat clip_y0 = (GLfloat)(y0 / fb_height * 2.0 - 1.0); |
| const GLfloat clip_x1 = (GLfloat)(x1 / fb_width * 2.0 - 1.0); |
| const GLfloat clip_y1 = (GLfloat)(y1 / fb_height * 2.0 - 1.0); |
| GLuint i; |
| float (*vertices)[3][4]; /**< vertex pos + color + texcoord */ |
| |
| if(!normalized) |
| { |
| sRight = (GLfloat) width; |
| tBot = (GLfloat) height; |
| } |
| |
| if (u_upload_alloc(st->uploader, 0, 4 * sizeof(vertices[0]), |
| vbuf_offset, vbuf, (void **) &vertices) != PIPE_OK) { |
| return; |
| } |
| |
| /* Positions are in clip coords since we need to do clipping in case |
| * the bitmap quad goes beyond the window bounds. |
| */ |
| vertices[0][0][0] = clip_x0; |
| vertices[0][0][1] = clip_y0; |
| vertices[0][2][0] = sLeft; |
| vertices[0][2][1] = tTop; |
| |
| vertices[1][0][0] = clip_x1; |
| vertices[1][0][1] = clip_y0; |
| vertices[1][2][0] = sRight; |
| vertices[1][2][1] = tTop; |
| |
| vertices[2][0][0] = clip_x1; |
| vertices[2][0][1] = clip_y1; |
| vertices[2][2][0] = sRight; |
| vertices[2][2][1] = tBot; |
| |
| vertices[3][0][0] = clip_x0; |
| vertices[3][0][1] = clip_y1; |
| vertices[3][2][0] = sLeft; |
| vertices[3][2][1] = tBot; |
| |
| /* same for all verts: */ |
| for (i = 0; i < 4; i++) { |
| vertices[i][0][2] = z; |
| vertices[i][0][3] = 1.0f; |
| vertices[i][1][0] = color[0]; |
| vertices[i][1][1] = color[1]; |
| vertices[i][1][2] = color[2]; |
| vertices[i][1][3] = color[3]; |
| vertices[i][2][2] = 0.0; /*R*/ |
| vertices[i][2][3] = 1.0; /*Q*/ |
| } |
| |
| u_upload_unmap(st->uploader); |
| } |
| |
| |
| |
| /** |
| * Render a glBitmap by drawing a textured quad |
| */ |
| static void |
| draw_bitmap_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z, |
| GLsizei width, GLsizei height, |
| struct pipe_sampler_view *sv, |
| const GLfloat *color) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct cso_context *cso = st->cso_context; |
| struct st_fp_variant *fpv; |
| struct st_fp_variant_key key; |
| GLuint maxSize; |
| GLuint offset; |
| struct pipe_resource *vbuf = NULL; |
| |
| memset(&key, 0, sizeof(key)); |
| key.st = st; |
| key.bitmap = GL_TRUE; |
| key.clamp_color = st->clamp_frag_color_in_shader && |
| st->ctx->Color._ClampFragmentColor && |
| !st->ctx->DrawBuffer->_IntegerColor; |
| |
| fpv = st_get_fp_variant(st, st->fp, &key); |
| |
| /* As an optimization, Mesa's fragment programs will sometimes get the |
| * primary color from a statevar/constant rather than a varying variable. |
| * when that's the case, we need to ensure that we use the 'color' |
| * parameter and not the current attribute color (which may have changed |
| * through glRasterPos and state validation. |
| * So, we force the proper color here. Not elegant, but it works. |
| */ |
| { |
| GLfloat colorSave[4]; |
| COPY_4V(colorSave, ctx->Current.Attrib[VERT_ATTRIB_COLOR0]); |
| COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], color); |
| st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT); |
| COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], colorSave); |
| } |
| |
| |
| /* limit checks */ |
| /* XXX if the bitmap is larger than the 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 <= (GLsizei)maxSize); |
| assert(height <= (GLsizei)maxSize); |
| |
| cso_save_rasterizer(cso); |
| cso_save_samplers(cso, PIPE_SHADER_FRAGMENT); |
| cso_save_sampler_views(cso, PIPE_SHADER_FRAGMENT); |
| cso_save_viewport(cso); |
| cso_save_fragment_shader(cso); |
| cso_save_stream_outputs(cso); |
| cso_save_vertex_shader(cso); |
| cso_save_geometry_shader(cso); |
| cso_save_vertex_elements(cso); |
| cso_save_vertex_buffers(cso); |
| |
| /* rasterizer state: just scissor */ |
| st->bitmap.rasterizer.scissor = ctx->Scissor.Enabled; |
| cso_set_rasterizer(cso, &st->bitmap.rasterizer); |
| |
| /* fragment shader state: TEX lookup program */ |
| cso_set_fragment_shader_handle(cso, fpv->driver_shader); |
| |
| /* vertex shader state: position + texcoord pass-through */ |
| cso_set_vertex_shader_handle(cso, st->bitmap.vs); |
| |
| /* geometry shader state: disabled */ |
| cso_set_geometry_shader_handle(cso, NULL); |
| |
| /* user samplers, plus our bitmap sampler */ |
| { |
| struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS]; |
| uint num = MAX2(fpv->bitmap_sampler + 1, |
| st->state.num_samplers[PIPE_SHADER_FRAGMENT]); |
| uint i; |
| for (i = 0; i < st->state.num_samplers[PIPE_SHADER_FRAGMENT]; i++) { |
| samplers[i] = &st->state.samplers[PIPE_SHADER_FRAGMENT][i]; |
| } |
| samplers[fpv->bitmap_sampler] = |
| &st->bitmap.samplers[sv->texture->target != PIPE_TEXTURE_RECT]; |
| cso_set_samplers(cso, PIPE_SHADER_FRAGMENT, num, |
| (const struct pipe_sampler_state **) samplers); |
| } |
| |
| /* user textures, plus the bitmap texture */ |
| { |
| struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS]; |
| uint num = MAX2(fpv->bitmap_sampler + 1, |
| st->state.num_sampler_views[PIPE_SHADER_FRAGMENT]); |
| memcpy(sampler_views, st->state.sampler_views[PIPE_SHADER_FRAGMENT], |
| sizeof(sampler_views)); |
| sampler_views[fpv->bitmap_sampler] = sv; |
| cso_set_sampler_views(cso, PIPE_SHADER_FRAGMENT, num, sampler_views); |
| } |
| |
| /* viewport state: viewport matching window dims */ |
| { |
| const GLboolean invert = st->state.fb_orientation == Y_0_TOP; |
| const GLfloat width = (GLfloat)st->state.framebuffer.width; |
| const GLfloat height = (GLfloat)st->state.framebuffer.height; |
| struct pipe_viewport_state vp; |
| vp.scale[0] = 0.5f * width; |
| vp.scale[1] = height * (invert ? -0.5f : 0.5f); |
| vp.scale[2] = 0.5f; |
| vp.scale[3] = 1.0f; |
| vp.translate[0] = 0.5f * width; |
| vp.translate[1] = 0.5f * height; |
| vp.translate[2] = 0.5f; |
| vp.translate[3] = 0.0f; |
| cso_set_viewport(cso, &vp); |
| } |
| |
| cso_set_vertex_elements(cso, 3, st->velems_util_draw); |
| cso_set_stream_outputs(st->cso_context, 0, NULL, 0); |
| |
| /* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */ |
| z = z * 2.0f - 1.0f; |
| |
| /* draw textured quad */ |
| setup_bitmap_vertex_data(st, sv->texture->target != PIPE_TEXTURE_RECT, |
| x, y, width, height, z, color, &vbuf, &offset); |
| |
| if (vbuf) { |
| util_draw_vertex_buffer(pipe, st->cso_context, vbuf, offset, |
| PIPE_PRIM_TRIANGLE_FAN, |
| 4, /* verts */ |
| 3); /* attribs/vert */ |
| } |
| |
| /* restore state */ |
| cso_restore_rasterizer(cso); |
| cso_restore_samplers(cso, PIPE_SHADER_FRAGMENT); |
| cso_restore_sampler_views(cso, PIPE_SHADER_FRAGMENT); |
| cso_restore_viewport(cso); |
| cso_restore_fragment_shader(cso); |
| cso_restore_vertex_shader(cso); |
| cso_restore_geometry_shader(cso); |
| cso_restore_vertex_elements(cso); |
| cso_restore_vertex_buffers(cso); |
| cso_restore_stream_outputs(cso); |
| |
| pipe_resource_reference(&vbuf, NULL); |
| } |
| |
| |
| static void |
| reset_cache(struct st_context *st) |
| { |
| struct pipe_context *pipe = st->pipe; |
| struct bitmap_cache *cache = st->bitmap.cache; |
| |
| /*memset(cache->buffer, 0xff, sizeof(cache->buffer));*/ |
| cache->empty = GL_TRUE; |
| |
| cache->xmin = 1000000; |
| cache->xmax = -1000000; |
| cache->ymin = 1000000; |
| cache->ymax = -1000000; |
| |
| if (cache->trans) { |
| pipe->transfer_destroy(pipe, cache->trans); |
| cache->trans = NULL; |
| } |
| |
| assert(!cache->texture); |
| |
| /* allocate a new texture */ |
| cache->texture = st_texture_create(st, PIPE_TEXTURE_2D, |
| st->bitmap.tex_format, 0, |
| BITMAP_CACHE_WIDTH, BITMAP_CACHE_HEIGHT, |
| 1, 1, |
| PIPE_BIND_SAMPLER_VIEW); |
| } |
| |
| |
| /** Print bitmap image to stdout (debug) */ |
| static void |
| print_cache(const struct bitmap_cache *cache) |
| { |
| int i, j, k; |
| |
| for (i = 0; i < BITMAP_CACHE_HEIGHT; i++) { |
| k = BITMAP_CACHE_WIDTH * (BITMAP_CACHE_HEIGHT - i - 1); |
| for (j = 0; j < BITMAP_CACHE_WIDTH; j++) { |
| if (cache->buffer[k]) |
| printf("X"); |
| else |
| printf(" "); |
| k++; |
| } |
| printf("\n"); |
| } |
| } |
| |
| |
| /** |
| * Create gallium pipe_transfer object for the bitmap cache. |
| */ |
| static void |
| create_cache_trans(struct st_context *st) |
| { |
| struct pipe_context *pipe = st->pipe; |
| struct bitmap_cache *cache = st->bitmap.cache; |
| |
| if (cache->trans) |
| return; |
| |
| /* Map the texture transfer. |
| * Subsequent glBitmap calls will write into the texture image. |
| */ |
| cache->trans = pipe_get_transfer(st->pipe, cache->texture, 0, 0, |
| PIPE_TRANSFER_WRITE, 0, 0, |
| BITMAP_CACHE_WIDTH, |
| BITMAP_CACHE_HEIGHT); |
| cache->buffer = pipe_transfer_map(pipe, cache->trans); |
| |
| /* init image to all 0xff */ |
| memset(cache->buffer, 0xff, cache->trans->stride * BITMAP_CACHE_HEIGHT); |
| } |
| |
| |
| /** |
| * If there's anything in the bitmap cache, draw/flush it now. |
| */ |
| void |
| st_flush_bitmap_cache(struct st_context *st) |
| { |
| if (!st->bitmap.cache->empty) { |
| struct bitmap_cache *cache = st->bitmap.cache; |
| |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_sampler_view *sv; |
| |
| assert(cache->xmin <= cache->xmax); |
| |
| /* printf("flush size %d x %d at %d, %d\n", |
| cache->xmax - cache->xmin, |
| cache->ymax - cache->ymin, |
| cache->xpos, cache->ypos); |
| */ |
| |
| /* The texture transfer has been mapped until now. |
| * So unmap and release the texture transfer before drawing. |
| */ |
| if (cache->trans) { |
| if (0) |
| print_cache(cache); |
| pipe_transfer_unmap(pipe, cache->trans); |
| cache->buffer = NULL; |
| |
| pipe->transfer_destroy(pipe, cache->trans); |
| cache->trans = NULL; |
| } |
| |
| sv = st_create_texture_sampler_view(st->pipe, cache->texture); |
| if (sv) { |
| draw_bitmap_quad(st->ctx, |
| cache->xpos, |
| cache->ypos, |
| cache->zpos, |
| BITMAP_CACHE_WIDTH, BITMAP_CACHE_HEIGHT, |
| sv, |
| cache->color); |
| |
| pipe_sampler_view_reference(&sv, NULL); |
| } |
| |
| /* release/free the texture */ |
| pipe_resource_reference(&cache->texture, NULL); |
| |
| reset_cache(st); |
| } |
| } |
| |
| |
| /** |
| * Try to accumulate this glBitmap call in the bitmap cache. |
| * \return GL_TRUE for success, GL_FALSE if bitmap is too large, etc. |
| */ |
| static GLboolean |
| accum_bitmap(struct st_context *st, |
| GLint x, GLint y, GLsizei width, GLsizei height, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLubyte *bitmap ) |
| { |
| struct bitmap_cache *cache = st->bitmap.cache; |
| int px = -999, py = -999; |
| const GLfloat z = st->ctx->Current.RasterPos[2]; |
| |
| if (width > BITMAP_CACHE_WIDTH || |
| height > BITMAP_CACHE_HEIGHT) |
| return GL_FALSE; /* too big to cache */ |
| |
| if (!cache->empty) { |
| px = x - cache->xpos; /* pos in buffer */ |
| py = y - cache->ypos; |
| if (px < 0 || px + width > BITMAP_CACHE_WIDTH || |
| py < 0 || py + height > BITMAP_CACHE_HEIGHT || |
| !TEST_EQ_4V(st->ctx->Current.RasterColor, cache->color) || |
| ((fabs(z - cache->zpos) > Z_EPSILON))) { |
| /* This bitmap would extend beyond cache bounds, or the bitmap |
| * color is changing |
| * so flush and continue. |
| */ |
| st_flush_bitmap_cache(st); |
| } |
| } |
| |
| if (cache->empty) { |
| /* Initialize. Center bitmap vertically in the buffer. */ |
| px = 0; |
| py = (BITMAP_CACHE_HEIGHT - height) / 2; |
| cache->xpos = x; |
| cache->ypos = y - py; |
| cache->zpos = z; |
| cache->empty = GL_FALSE; |
| COPY_4FV(cache->color, st->ctx->Current.RasterColor); |
| } |
| |
| assert(px != -999); |
| assert(py != -999); |
| |
| if (x < cache->xmin) |
| cache->xmin = x; |
| if (y < cache->ymin) |
| cache->ymin = y; |
| if (x + width > cache->xmax) |
| cache->xmax = x + width; |
| if (y + height > cache->ymax) |
| cache->ymax = y + height; |
| |
| /* create the transfer if needed */ |
| create_cache_trans(st); |
| |
| unpack_bitmap(st, px, py, width, height, unpack, bitmap, |
| cache->buffer, BITMAP_CACHE_WIDTH); |
| |
| return GL_TRUE; /* accumulated */ |
| } |
| |
| |
| |
| /** |
| * Called via ctx->Driver.Bitmap() |
| */ |
| static void |
| st_Bitmap(struct gl_context *ctx, GLint x, GLint y, |
| GLsizei width, GLsizei height, |
| const struct gl_pixelstore_attrib *unpack, const GLubyte *bitmap ) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_resource *pt; |
| |
| if (width == 0 || height == 0) |
| return; |
| |
| st_validate_state(st); |
| |
| 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); |
| } |
| |
| if (UseBitmapCache && accum_bitmap(st, x, y, width, height, unpack, bitmap)) |
| return; |
| |
| pt = make_bitmap_texture(ctx, width, height, unpack, bitmap); |
| if (pt) { |
| struct pipe_sampler_view *sv = |
| st_create_texture_sampler_view(st->pipe, pt); |
| |
| assert(pt->target == PIPE_TEXTURE_2D || pt->target == PIPE_TEXTURE_RECT); |
| |
| if (sv) { |
| draw_bitmap_quad(ctx, x, y, ctx->Current.RasterPos[2], |
| width, height, sv, |
| st->ctx->Current.RasterColor); |
| |
| pipe_sampler_view_reference(&sv, NULL); |
| } |
| |
| /* release/free the texture */ |
| pipe_resource_reference(&pt, NULL); |
| } |
| } |
| |
| |
| /** Per-context init */ |
| void |
| st_init_bitmap_functions(struct dd_function_table *functions) |
| { |
| functions->Bitmap = st_Bitmap; |
| } |
| |
| |
| /** Per-context init */ |
| void |
| st_init_bitmap(struct st_context *st) |
| { |
| struct pipe_sampler_state *sampler = &st->bitmap.samplers[0]; |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_screen *screen = pipe->screen; |
| |
| /* init sampler state once */ |
| 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; |
| st->bitmap.samplers[1] = *sampler; |
| st->bitmap.samplers[1].normalized_coords = 1; |
| |
| /* init baseline rasterizer state once */ |
| memset(&st->bitmap.rasterizer, 0, sizeof(st->bitmap.rasterizer)); |
| st->bitmap.rasterizer.gl_rasterization_rules = 1; |
| st->bitmap.rasterizer.depth_clip = 1; |
| |
| /* find a usable texture format */ |
| if (screen->is_format_supported(screen, PIPE_FORMAT_I8_UNORM, |
| PIPE_TEXTURE_2D, 0, |
| PIPE_BIND_SAMPLER_VIEW)) { |
| st->bitmap.tex_format = PIPE_FORMAT_I8_UNORM; |
| } |
| else if (screen->is_format_supported(screen, PIPE_FORMAT_A8_UNORM, |
| PIPE_TEXTURE_2D, 0, |
| PIPE_BIND_SAMPLER_VIEW)) { |
| st->bitmap.tex_format = PIPE_FORMAT_A8_UNORM; |
| } |
| else if (screen->is_format_supported(screen, PIPE_FORMAT_L8_UNORM, |
| PIPE_TEXTURE_2D, 0, |
| PIPE_BIND_SAMPLER_VIEW)) { |
| st->bitmap.tex_format = PIPE_FORMAT_L8_UNORM; |
| } |
| else { |
| /* XXX support more formats */ |
| assert(0); |
| } |
| |
| /* alloc bitmap cache object */ |
| st->bitmap.cache = ST_CALLOC_STRUCT(bitmap_cache); |
| |
| reset_cache(st); |
| } |
| |
| |
| /** Per-context tear-down */ |
| void |
| st_destroy_bitmap(struct st_context *st) |
| { |
| struct pipe_context *pipe = st->pipe; |
| struct bitmap_cache *cache = st->bitmap.cache; |
| |
| if (st->bitmap.vs) { |
| cso_delete_vertex_shader(st->cso_context, st->bitmap.vs); |
| st->bitmap.vs = NULL; |
| } |
| |
| if (cache) { |
| if (cache->trans) { |
| pipe_transfer_unmap(pipe, cache->trans); |
| pipe->transfer_destroy(pipe, cache->trans); |
| } |
| pipe_resource_reference(&st->bitmap.cache->texture, NULL); |
| free(st->bitmap.cache); |
| st->bitmap.cache = NULL; |
| } |
| } |
| |
| #endif /* FEATURE_drawpix */ |
