diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915/intel_pixel_bitmap.c')
| -rw-r--r--[l---------] | src/mesa/drivers/dri/i915/intel_pixel_bitmap.c | 364 |
1 files changed, 363 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_pixel_bitmap.c b/src/mesa/drivers/dri/i915/intel_pixel_bitmap.c index 9085c7b0397..8c0edf2dd85 120000..100644 --- a/src/mesa/drivers/dri/i915/intel_pixel_bitmap.c +++ b/src/mesa/drivers/dri/i915/intel_pixel_bitmap.c @@ -1 +1,363 @@ -../intel/intel_pixel_bitmap.c
\ No newline at end of file +/************************************************************************** + * + * 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 "main/fbobject.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_fbo.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.MapBufferRange(ctx, 0, unpack->BufferObj->Size, + GL_MAP_READ_BIT, + unpack->BufferObj); + if (!buf) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)"); + return NULL; + } + + return ADD_POINTERS(buf, bitmap); +} + +static bool 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, + bool 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 (_mesa_is_user_fbo(fb)) + return y; + else + return fb->Height - y - height; +} + +/* + * Render a bitmap. + */ +static bool +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 gl_framebuffer *fb = ctx->DrawBuffer; + struct intel_renderbuffer *irb; + 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 false; + } + + intel_prepare_render(intel); + + if (fb->_NumColorDrawBuffers != 1) { + perf_debug("accelerated glBitmap() only supports rendering to a " + "single color buffer\n"); + return false; + } + + irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]); + + if (_mesa_is_bufferobj(unpack->BufferObj)) { + bitmap = map_pbo(ctx, width, height, unpack, bitmap); + if (bitmap == NULL) + return 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]); + + switch (irb->mt->format) { + case MESA_FORMAT_ARGB8888: + case MESA_FORMAT_XRGB8888: + color = PACK_COLOR_8888(ubcolor[3], ubcolor[0], ubcolor[1], ubcolor[2]); + break; + case MESA_FORMAT_RGB565: + color = PACK_COLOR_565(ubcolor[0], ubcolor[1], ubcolor[2]); + break; + default: + perf_debug("Unsupported format %s in accelerated glBitmap()\n", + _mesa_get_format_name(irb->mt->format)); + return false; + } + + if (!intel_check_blit_fragment_ops(ctx, tmpColor[3] == 1.0F)) + return 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 + + /* The blitter has no idea about fast color clears, so we need to resolve + * the miptree before we do anything. + */ + intel_miptree_resolve_color(intel, irb->mt); + + /* 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. + */ + int count = 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, + _mesa_is_winsys_fbo(fb)); + if (count == 0) + continue; + + if (!intelEmitImmediateColorExpandBlit(intel, + irb->mt->cpp, + (GLubyte *)stipple, + sz, + color, + irb->mt->region->pitch, + irb->mt->region->bo, + 0, + irb->mt->region->tiling, + dstx + px, + dsty + py, + w, h, + logic_op)) { + return false; + } + + if (ctx->Query.CurrentOcclusionObject) + ctx->Query.CurrentOcclusionObject->Result += count; + } + } +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 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) +{ + if (!_mesa_check_conditional_render(ctx)) + return; + + if (do_blit_bitmap(ctx, x, y, width, height, + unpack, pixels)) + return; + + _mesa_meta_Bitmap(ctx, x, y, width, height, unpack, pixels); +} |