| /************************************************************************** |
| * |
| * Copyright 2006 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 portionsalloc |
| * 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. |
| * |
| **************************************************************************/ |
| |
| #include "main/glheader.h" |
| #include "main/enums.h" |
| #include "main/image.h" |
| #include "main/colormac.h" |
| #include "main/condrender.h" |
| #include "main/mtypes.h" |
| #include "main/macros.h" |
| #include "main/pbo.h" |
| #include "main/bufferobj.h" |
| #include "main/state.h" |
| #include "main/texobj.h" |
| #include "main/context.h" |
| #include "swrast/swrast.h" |
| #include "drivers/common/meta.h" |
| |
| #include "intel_screen.h" |
| #include "intel_context.h" |
| #include "intel_batchbuffer.h" |
| #include "intel_blit.h" |
| #include "intel_regions.h" |
| #include "intel_buffers.h" |
| #include "intel_pixel.h" |
| #include "intel_reg.h" |
| |
| |
| #define FILE_DEBUG_FLAG DEBUG_PIXEL |
| |
| |
| /* Unlike the other intel_pixel_* functions, the expectation here is |
| * that the incoming data is not in a PBO. With the XY_TEXT blit |
| * method, there's no benefit haveing it in a PBO, but we could |
| * implement a path based on XY_MONO_SRC_COPY_BLIT which might benefit |
| * PBO bitmaps. I think they are probably pretty rare though - I |
| * wonder if Xgl uses them? |
| */ |
| static const GLubyte *map_pbo( struct gl_context *ctx, |
| GLsizei width, GLsizei height, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLubyte *bitmap ) |
| { |
| GLubyte *buf; |
| |
| if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, |
| GL_COLOR_INDEX, GL_BITMAP, |
| INT_MAX, (const GLvoid *) bitmap)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)"); |
| return NULL; |
| } |
| |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, |
| GL_READ_ONLY_ARB, |
| unpack->BufferObj); |
| if (!buf) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)"); |
| return NULL; |
| } |
| |
| return ADD_POINTERS(buf, bitmap); |
| } |
| |
| static GLboolean test_bit( const GLubyte *src, GLuint bit ) |
| { |
| return (src[bit/8] & (1<<(bit % 8))) ? 1 : 0; |
| } |
| |
| static void set_bit( GLubyte *dest, GLuint bit ) |
| { |
| dest[bit/8] |= 1 << (bit % 8); |
| } |
| |
| /* Extract a rectangle's worth of data from the bitmap. Called |
| * per chunk of HW-sized bitmap. |
| */ |
| static GLuint get_bitmap_rect(GLsizei width, GLsizei height, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLubyte *bitmap, |
| GLuint x, GLuint y, |
| GLuint w, GLuint h, |
| GLubyte *dest, |
| GLuint row_align, |
| GLboolean invert) |
| { |
| GLuint src_offset = (x + unpack->SkipPixels) & 0x7; |
| GLuint mask = unpack->LsbFirst ? 0 : 7; |
| GLuint bit = 0; |
| GLint row, col; |
| GLint first, last; |
| GLint incr; |
| GLuint count = 0; |
| |
| DBG("%s %d,%d %dx%d bitmap %dx%d skip %d src_offset %d mask %d\n", |
| __FUNCTION__, x,y,w,h,width,height,unpack->SkipPixels, src_offset, mask); |
| |
| if (invert) { |
| first = h-1; |
| last = 0; |
| incr = -1; |
| } |
| else { |
| first = 0; |
| last = h-1; |
| incr = 1; |
| } |
| |
| /* Require that dest be pre-zero'd. |
| */ |
| for (row = first; row != (last+incr); row += incr) { |
| const GLubyte *rowsrc = _mesa_image_address2d(unpack, bitmap, |
| width, height, |
| GL_COLOR_INDEX, GL_BITMAP, |
| y + row, x); |
| |
| for (col = 0; col < w; col++, bit++) { |
| if (test_bit(rowsrc, (col + src_offset) ^ mask)) { |
| set_bit(dest, bit ^ 7); |
| count++; |
| } |
| } |
| |
| if (row_align) |
| bit = ALIGN(bit, row_align); |
| } |
| |
| return count; |
| } |
| |
| /** |
| * Returns the low Y value of the vertical range given, flipped according to |
| * whether the framebuffer is or not. |
| */ |
| static INLINE int |
| y_flip(struct gl_framebuffer *fb, int y, int height) |
| { |
| if (fb->Name != 0) |
| return y; |
| else |
| return fb->Height - y - height; |
| } |
| |
| /* |
| * Render a bitmap. |
| */ |
| static GLboolean |
| do_blit_bitmap( struct gl_context *ctx, |
| GLint dstx, GLint dsty, |
| GLsizei width, GLsizei height, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLubyte *bitmap ) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct intel_region *dst; |
| struct gl_framebuffer *fb = ctx->DrawBuffer; |
| GLfloat tmpColor[4]; |
| GLubyte ubcolor[4]; |
| GLuint color; |
| GLsizei bitmap_width = width; |
| GLsizei bitmap_height = height; |
| GLint px, py; |
| GLuint stipple[32]; |
| GLint orig_dstx = dstx; |
| GLint orig_dsty = dsty; |
| |
| /* Update draw buffer bounds */ |
| _mesa_update_state(ctx); |
| |
| if (ctx->Depth.Test) { |
| /* The blit path produces incorrect results when depth testing is on. |
| * It seems the blit Z coord is always 1.0 (the far plane) so fragments |
| * will likely be obscured by other, closer geometry. |
| */ |
| return GL_FALSE; |
| } |
| |
| intel_prepare_render(intel); |
| dst = intel_drawbuf_region(intel); |
| |
| if (!dst) |
| return GL_FALSE; |
| |
| if (_mesa_is_bufferobj(unpack->BufferObj)) { |
| bitmap = map_pbo(ctx, width, height, unpack, bitmap); |
| if (bitmap == NULL) |
| return GL_TRUE; /* even though this is an error, we're done */ |
| } |
| |
| COPY_4V(tmpColor, ctx->Current.RasterColor); |
| |
| if (_mesa_need_secondary_color(ctx)) { |
| ADD_3V(tmpColor, tmpColor, ctx->Current.RasterSecondaryColor); |
| } |
| |
| UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[0], tmpColor[0]); |
| UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[1], tmpColor[1]); |
| UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[2], tmpColor[2]); |
| UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[3], tmpColor[3]); |
| |
| if (dst->cpp == 2) |
| color = PACK_COLOR_565(ubcolor[0], ubcolor[1], ubcolor[2]); |
| else |
| color = PACK_COLOR_8888(ubcolor[3], ubcolor[0], ubcolor[1], ubcolor[2]); |
| |
| if (!intel_check_blit_fragment_ops(ctx, tmpColor[3] == 1.0F)) |
| return GL_FALSE; |
| |
| /* Clip to buffer bounds and scissor. */ |
| if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin, |
| fb->_Xmax, fb->_Ymax, |
| &dstx, &dsty, &width, &height)) |
| goto out; |
| |
| dsty = y_flip(fb, dsty, height); |
| |
| #define DY 32 |
| #define DX 32 |
| |
| /* Chop it all into chunks that can be digested by hardware: */ |
| for (py = 0; py < height; py += DY) { |
| for (px = 0; px < width; px += DX) { |
| int h = MIN2(DY, height - py); |
| int w = MIN2(DX, width - px); |
| GLuint sz = ALIGN(ALIGN(w,8) * h, 64)/8; |
| GLenum logic_op = ctx->Color.ColorLogicOpEnabled ? |
| ctx->Color.LogicOp : GL_COPY; |
| |
| assert(sz <= sizeof(stipple)); |
| memset(stipple, 0, sz); |
| |
| /* May need to adjust this when padding has been introduced in |
| * sz above: |
| * |
| * Have to translate destination coordinates back into source |
| * coordinates. |
| */ |
| if (get_bitmap_rect(bitmap_width, bitmap_height, unpack, |
| bitmap, |
| -orig_dstx + (dstx + px), |
| -orig_dsty + y_flip(fb, dsty + py, h), |
| w, h, |
| (GLubyte *)stipple, |
| 8, |
| fb->Name == 0 ? GL_TRUE : GL_FALSE) == 0) |
| continue; |
| |
| if (!intelEmitImmediateColorExpandBlit(intel, |
| dst->cpp, |
| (GLubyte *)stipple, |
| sz, |
| color, |
| dst->pitch, |
| dst->buffer, |
| 0, |
| dst->tiling, |
| dstx + px, |
| dsty + py, |
| w, h, |
| logic_op)) { |
| return GL_FALSE; |
| } |
| } |
| } |
| out: |
| |
| if (unlikely(INTEL_DEBUG & DEBUG_SYNC)) |
| intel_batchbuffer_flush(intel); |
| |
| if (_mesa_is_bufferobj(unpack->BufferObj)) { |
| /* done with PBO so unmap it now */ |
| ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj); |
| } |
| |
| intel_check_front_buffer_rendering(intel); |
| |
| return GL_TRUE; |
| } |
| |
| |
| /* There are a large number of possible ways to implement bitmap on |
| * this hardware, most of them have some sort of drawback. Here are a |
| * few that spring to mind: |
| * |
| * Blit: |
| * - XY_MONO_SRC_BLT_CMD |
| * - use XY_SETUP_CLIP_BLT for cliprect clipping. |
| * - XY_TEXT_BLT |
| * - XY_TEXT_IMMEDIATE_BLT |
| * - blit per cliprect, subject to maximum immediate data size. |
| * - XY_COLOR_BLT |
| * - per pixel or run of pixels |
| * - XY_PIXEL_BLT |
| * - good for sparse bitmaps |
| * |
| * 3D engine: |
| * - Point per pixel |
| * - Translate bitmap to an alpha texture and render as a quad |
| * - Chop bitmap up into 32x32 squares and render w/polygon stipple. |
| */ |
| void |
| intelBitmap(struct gl_context * ctx, |
| GLint x, GLint y, |
| GLsizei width, GLsizei height, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLubyte * pixels) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| |
| if (!_mesa_check_conditional_render(ctx)) |
| return; |
| |
| if (do_blit_bitmap(ctx, x, y, width, height, |
| unpack, pixels)) |
| return; |
| |
| /* FIXME */ |
| if (intel->gen == 6) |
| return _swrast_Bitmap(ctx, x, y, width, height, unpack, pixels); |
| |
| _mesa_meta_Bitmap(ctx, x, y, width, height, unpack, pixels); |
| } |