| /************************************************************************** |
| * |
| * Copyright 2007 VMware, Inc. |
| * 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 VMWARE 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/dlist.h" |
| #include "main/macros.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_draw.h" |
| #include "st_program.h" |
| #include "st_cb_bitmap.h" |
| #include "st_sampler_view.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_simple_shaders.h" |
| #include "util/u_upload_mgr.h" |
| #include "program/prog_instruction.h" |
| #include "cso_cache/cso_context.h" |
| |
| |
| /** |
| * 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 |
| |
| |
| /** |
| * 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, 0, |
| PIPE_BIND_SAMPLER_VIEW); |
| if (!pt) { |
| _mesa_unmap_pbo_source(ctx, unpack); |
| return NULL; |
| } |
| |
| dest = pipe_transfer_map(st->pipe, pt, 0, 0, |
| PIPE_TRANSFER_WRITE, |
| 0, 0, width, height, &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); |
| return pt; |
| } |
| |
| |
| /** |
| * Setup pipeline state prior to rendering the bitmap textured quad. |
| */ |
| static void |
| setup_render_state(struct gl_context *ctx, |
| struct pipe_sampler_view *sv, |
| const GLfloat *color, |
| bool atlas) |
| { |
| struct st_context *st = st_context(ctx); |
| struct cso_context *cso = st->cso_context; |
| struct st_fp_variant *fpv; |
| struct st_fp_variant_key key; |
| |
| memset(&key, 0, sizeof(key)); |
| key.st = st->has_shareable_shaders ? NULL : st; |
| key.bitmap = GL_TRUE; |
| key.clamp_color = st->clamp_frag_color_in_shader && |
| ctx->Color._ClampFragmentColor; |
| |
| 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, st->fp->Base.Parameters, MESA_SHADER_FRAGMENT); |
| COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], colorSave); |
| } |
| |
| cso_save_state(cso, (CSO_BIT_RASTERIZER | |
| CSO_BIT_FRAGMENT_SAMPLERS | |
| CSO_BIT_FRAGMENT_SAMPLER_VIEWS | |
| CSO_BIT_VIEWPORT | |
| CSO_BIT_STREAM_OUTPUTS | |
| CSO_BIT_VERTEX_ELEMENTS | |
| CSO_BIT_AUX_VERTEX_BUFFER_SLOT | |
| CSO_BITS_ALL_SHADERS)); |
| |
| |
| /* rasterizer state: just scissor */ |
| st->bitmap.rasterizer.scissor = ctx->Scissor.EnableFlags & 1; |
| 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); |
| |
| /* disable other shaders */ |
| cso_set_tessctrl_shader_handle(cso, NULL); |
| cso_set_tesseval_shader_handle(cso, NULL); |
| 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]; |
| } |
| if (atlas) |
| samplers[fpv->bitmap_sampler] = &st->bitmap.atlas_sampler; |
| else |
| samplers[fpv->bitmap_sampler] = &st->bitmap.sampler; |
| 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 */ |
| cso_set_viewport_dims(cso, st->state.framebuffer.width, |
| st->state.framebuffer.height, |
| st->state.fb_orientation == Y_0_TOP); |
| |
| cso_set_vertex_elements(cso, 3, st->util_velems); |
| |
| cso_set_stream_outputs(st->cso_context, 0, NULL, NULL); |
| } |
| |
| |
| /** |
| * Restore pipeline state after rendering the bitmap textured quad. |
| */ |
| static void |
| restore_render_state(struct gl_context *ctx) |
| { |
| struct st_context *st = st_context(ctx); |
| struct cso_context *cso = st->cso_context; |
| |
| cso_restore_state(cso); |
| } |
| |
| |
| /** |
| * 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; |
| const float fb_width = (float) st->state.framebuffer.width; |
| const float fb_height = (float) st->state.framebuffer.height; |
| const float x0 = (float) x; |
| const float x1 = (float) (x + width); |
| const float y0 = (float) y; |
| const float y1 = (float) (y + height); |
| float sLeft = 0.0f, sRight = 1.0f; |
| float tTop = 0.0f, tBot = 1.0f - tTop; |
| const float clip_x0 = x0 / fb_width * 2.0f - 1.0f; |
| const float clip_y0 = y0 / fb_height * 2.0f - 1.0f; |
| const float clip_x1 = x1 / fb_width * 2.0f - 1.0f; |
| const float clip_y1 = y1 / fb_height * 2.0f - 1.0f; |
| |
| /* limit checks */ |
| { |
| /* XXX if the bitmap is larger than the max texture size, break |
| * it up into chunks. |
| */ |
| GLuint maxSize = 1 << (pipe->screen->get_param(pipe->screen, |
| PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1); |
| assert(width <= (GLsizei) maxSize); |
| assert(height <= (GLsizei) maxSize); |
| } |
| |
| setup_render_state(ctx, sv, color, false); |
| |
| /* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */ |
| z = z * 2.0f - 1.0f; |
| |
| if (sv->texture->target == PIPE_TEXTURE_RECT) { |
| /* use non-normalized texcoords */ |
| sRight = (float) width; |
| tBot = (float) height; |
| } |
| |
| if (!st_draw_quad(st, clip_x0, clip_y0, clip_x1, clip_y1, z, |
| sLeft, tBot, sRight, tTop, color, 0)) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBitmap"); |
| } |
| |
| restore_render_state(ctx); |
| |
| /* We uploaded modified constants, need to invalidate them. */ |
| st->dirty |= ST_NEW_FS_CONSTANTS; |
| } |
| |
| |
| static void |
| reset_cache(struct st_context *st) |
| { |
| 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; |
| |
| assert(!cache->texture); |
| |
| /* allocate a new texture */ |
| cache->texture = st_texture_create(st, st->internal_target, |
| st->bitmap.tex_format, 0, |
| BITMAP_CACHE_WIDTH, BITMAP_CACHE_HEIGHT, |
| 1, 1, 0, |
| 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->buffer = pipe_transfer_map(pipe, cache->texture, 0, 0, |
| PIPE_TRANSFER_WRITE, 0, 0, |
| BITMAP_CACHE_WIDTH, |
| BITMAP_CACHE_HEIGHT, &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) |
| { |
| struct bitmap_cache *cache = st->bitmap.cache; |
| |
| if (cache && !cache->empty) { |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_sampler_view *sv; |
| |
| assert(cache->xmin <= cache->xmax); |
| |
| if (0) |
| printf("flush bitmap, 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 && cache->buffer) { |
| if (0) |
| print_cache(cache); |
| pipe_transfer_unmap(pipe, cache->trans); |
| cache->buffer = NULL; |
| 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 gl_context *ctx, |
| GLint x, GLint y, GLsizei width, GLsizei height, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLubyte *bitmap ) |
| { |
| struct st_context *st = ctx->st; |
| struct bitmap_cache *cache = st->bitmap.cache; |
| int px = -999, py = -999; |
| const GLfloat z = 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(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, 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); |
| |
| /* PBO source... */ |
| bitmap = _mesa_map_pbo_source(ctx, unpack, bitmap); |
| if (!bitmap) { |
| return FALSE; |
| } |
| |
| unpack_bitmap(st, px, py, width, height, unpack, bitmap, |
| cache->buffer, BITMAP_CACHE_WIDTH); |
| |
| _mesa_unmap_pbo_source(ctx, unpack); |
| |
| return GL_TRUE; /* accumulated */ |
| } |
| |
| |
| /** |
| * One-time init for drawing bitmaps. |
| */ |
| static void |
| init_bitmap_state(struct st_context *st) |
| { |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_screen *screen = pipe->screen; |
| |
| /* This function should only be called once */ |
| assert(st->bitmap.cache == NULL); |
| |
| assert(st->internal_target == PIPE_TEXTURE_2D || |
| st->internal_target == PIPE_TEXTURE_RECT); |
| |
| /* alloc bitmap cache object */ |
| st->bitmap.cache = ST_CALLOC_STRUCT(bitmap_cache); |
| |
| /* init sampler state once */ |
| memset(&st->bitmap.sampler, 0, sizeof(st->bitmap.sampler)); |
| st->bitmap.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP; |
| st->bitmap.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP; |
| st->bitmap.sampler.wrap_r = PIPE_TEX_WRAP_CLAMP; |
| st->bitmap.sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST; |
| st->bitmap.sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; |
| st->bitmap.sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST; |
| st->bitmap.sampler.normalized_coords = st->internal_target == PIPE_TEXTURE_2D; |
| |
| st->bitmap.atlas_sampler = st->bitmap.sampler; |
| st->bitmap.atlas_sampler.normalized_coords = 0; |
| |
| /* init baseline rasterizer state once */ |
| memset(&st->bitmap.rasterizer, 0, sizeof(st->bitmap.rasterizer)); |
| st->bitmap.rasterizer.half_pixel_center = 1; |
| st->bitmap.rasterizer.bottom_edge_rule = 1; |
| st->bitmap.rasterizer.depth_clip = 1; |
| |
| /* find a usable texture format */ |
| if (screen->is_format_supported(screen, PIPE_FORMAT_I8_UNORM, |
| st->internal_target, 0, |
| PIPE_BIND_SAMPLER_VIEW)) { |
| st->bitmap.tex_format = PIPE_FORMAT_I8_UNORM; |
| } |
| else if (screen->is_format_supported(screen, PIPE_FORMAT_A8_UNORM, |
| st->internal_target, 0, |
| PIPE_BIND_SAMPLER_VIEW)) { |
| st->bitmap.tex_format = PIPE_FORMAT_A8_UNORM; |
| } |
| else if (screen->is_format_supported(screen, PIPE_FORMAT_L8_UNORM, |
| st->internal_target, 0, |
| PIPE_BIND_SAMPLER_VIEW)) { |
| st->bitmap.tex_format = PIPE_FORMAT_L8_UNORM; |
| } |
| else { |
| /* XXX support more formats */ |
| assert(0); |
| } |
| |
| /* Create the vertex shader */ |
| { |
| const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, |
| TGSI_SEMANTIC_COLOR, |
| st->needs_texcoord_semantic ? TGSI_SEMANTIC_TEXCOORD : |
| 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, |
| FALSE); |
| } |
| |
| reset_cache(st); |
| } |
| |
| |
| /** |
| * 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; |
| |
| assert(width > 0); |
| assert(height > 0); |
| |
| st_invalidate_readpix_cache(st); |
| |
| if (!st->bitmap.cache) { |
| init_bitmap_state(st); |
| } |
| |
| /* We only need to validate any non-ST_NEW_CONSTANTS state. The VS we use |
| * for bitmap drawing uses no constants and the FS constants are |
| * explicitly uploaded in the draw_bitmap_quad() function. |
| */ |
| if ((st->dirty | ctx->NewDriverState) & ~ST_NEW_CONSTANTS & |
| ST_PIPELINE_RENDER_STATE_MASK || |
| st->gfx_shaders_may_be_dirty) { |
| st_validate_state(st, ST_PIPELINE_RENDER); |
| } |
| |
| if (UseBitmapCache && accum_bitmap(ctx, 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, ctx->Current.RasterColor); |
| |
| pipe_sampler_view_reference(&sv, NULL); |
| } |
| |
| /* release/free the texture */ |
| pipe_resource_reference(&pt, NULL); |
| } |
| } |
| |
| |
| /** |
| * Called via ctx->Driver.DrawAtlasBitmap() |
| */ |
| static void |
| st_DrawAtlasBitmaps(struct gl_context *ctx, |
| const struct gl_bitmap_atlas *atlas, |
| GLuint count, const GLubyte *ids) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct st_texture_object *stObj = st_texture_object(atlas->texObj); |
| struct pipe_sampler_view *sv; |
| /* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */ |
| const float z = ctx->Current.RasterPos[2] * 2.0f - 1.0f; |
| const float *color = ctx->Current.RasterColor; |
| const float clip_x_scale = 2.0f / st->state.framebuffer.width; |
| const float clip_y_scale = 2.0f / st->state.framebuffer.height; |
| const unsigned num_verts = count * 4; |
| const unsigned num_vert_bytes = num_verts * sizeof(struct st_util_vertex); |
| struct st_util_vertex *verts; |
| struct pipe_vertex_buffer vb = {0}; |
| unsigned i; |
| |
| if (!st->bitmap.cache) { |
| init_bitmap_state(st); |
| } |
| |
| st_flush_bitmap_cache(st); |
| |
| st_validate_state(st, ST_PIPELINE_RENDER); |
| st_invalidate_readpix_cache(st); |
| |
| sv = st_create_texture_sampler_view(pipe, stObj->pt); |
| if (!sv) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCallLists(bitmap text)"); |
| return; |
| } |
| |
| setup_render_state(ctx, sv, color, true); |
| |
| vb.stride = sizeof(struct st_util_vertex); |
| |
| u_upload_alloc(st->uploader, 0, num_vert_bytes, 4, |
| &vb.buffer_offset, &vb.buffer, (void **) &verts); |
| |
| /* build quads vertex data */ |
| for (i = 0; i < count; i++) { |
| const GLfloat epsilon = 0.0001F; |
| const struct gl_bitmap_glyph *g = &atlas->glyphs[ids[i]]; |
| const float xmove = g->xmove, ymove = g->ymove; |
| const float xorig = g->xorig, yorig = g->yorig; |
| const float s0 = g->x, t0 = g->y; |
| const float s1 = s0 + g->w, t1 = t0 + g->h; |
| const float x0 = IFLOOR(ctx->Current.RasterPos[0] - xorig + epsilon); |
| const float y0 = IFLOOR(ctx->Current.RasterPos[1] - yorig + epsilon); |
| const float x1 = x0 + g->w, y1 = y0 + g->h; |
| const float clip_x0 = x0 * clip_x_scale - 1.0f; |
| const float clip_y0 = y0 * clip_y_scale - 1.0f; |
| const float clip_x1 = x1 * clip_x_scale - 1.0f; |
| const float clip_y1 = y1 * clip_y_scale - 1.0f; |
| |
| /* lower-left corner */ |
| verts->x = clip_x0; |
| verts->y = clip_y0; |
| verts->z = z; |
| verts->r = color[0]; |
| verts->g = color[1]; |
| verts->b = color[2]; |
| verts->a = color[3]; |
| verts->s = s0; |
| verts->t = t0; |
| verts++; |
| |
| /* lower-right corner */ |
| verts->x = clip_x1; |
| verts->y = clip_y0; |
| verts->z = z; |
| verts->r = color[0]; |
| verts->g = color[1]; |
| verts->b = color[2]; |
| verts->a = color[3]; |
| verts->s = s1; |
| verts->t = t0; |
| verts++; |
| |
| /* upper-right corner */ |
| verts->x = clip_x1; |
| verts->y = clip_y1; |
| verts->z = z; |
| verts->r = color[0]; |
| verts->g = color[1]; |
| verts->b = color[2]; |
| verts->a = color[3]; |
| verts->s = s1; |
| verts->t = t1; |
| verts++; |
| |
| /* upper-left corner */ |
| verts->x = clip_x0; |
| verts->y = clip_y1; |
| verts->z = z; |
| verts->r = color[0]; |
| verts->g = color[1]; |
| verts->b = color[2]; |
| verts->a = color[3]; |
| verts->s = s0; |
| verts->t = t1; |
| verts++; |
| |
| /* Update the raster position */ |
| ctx->Current.RasterPos[0] += xmove; |
| ctx->Current.RasterPos[1] += ymove; |
| } |
| |
| u_upload_unmap(st->uploader); |
| |
| cso_set_vertex_buffers(st->cso_context, |
| cso_get_aux_vertex_buffer_slot(st->cso_context), |
| 1, &vb); |
| |
| cso_draw_arrays(st->cso_context, PIPE_PRIM_QUADS, 0, num_verts); |
| |
| restore_render_state(ctx); |
| |
| pipe_resource_reference(&vb.buffer, NULL); |
| |
| pipe_sampler_view_reference(&sv, NULL); |
| |
| /* We uploaded modified constants, need to invalidate them. */ |
| st->dirty |= ST_NEW_FS_CONSTANTS; |
| } |
| |
| |
| |
| /** Per-context init */ |
| void |
| st_init_bitmap_functions(struct dd_function_table *functions) |
| { |
| functions->Bitmap = st_Bitmap; |
| functions->DrawAtlasBitmaps = st_DrawAtlasBitmaps; |
| } |
| |
| |
| /** 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 && cache->buffer) { |
| pipe_transfer_unmap(pipe, cache->trans); |
| } |
| pipe_resource_reference(&st->bitmap.cache->texture, NULL); |
| free(st->bitmap.cache); |
| st->bitmap.cache = NULL; |
| } |
| } |
