diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_pixel_bitmap.c')
-rw-r--r-- | src/mesa/drivers/dri/intel/intel_pixel_bitmap.c | 557 |
1 files changed, 557 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_pixel_bitmap.c b/src/mesa/drivers/dri/intel/intel_pixel_bitmap.c new file mode 100644 index 0000000000..1db7f5594e --- /dev/null +++ b/src/mesa/drivers/dri/intel/intel_pixel_bitmap.c @@ -0,0 +1,557 @@ +/************************************************************************** + * + * 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/mtypes.h" +#include "main/macros.h" +#include "main/bufferobj.h" +#include "main/pixelstore.h" +#include "main/state.h" +#include "main/teximage.h" +#include "main/texenv.h" +#include "main/texobj.h" +#include "main/texstate.h" +#include "main/texparam.h" +#include "main/varray.h" +#include "main/attrib.h" +#include "main/enable.h" +#include "shader/arbprogram.h" +#include "glapi/dispatch.h" +#include "swrast/swrast.h" + +#include "intel_screen.h" +#include "intel_context.h" +#include "intel_batchbuffer.h" +#include "intel_blit.h" +#include "intel_regions.h" +#include "intel_buffer_objects.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( GLcontext *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, + (GLvoid *) bitmap)) { + _mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)"); + return NULL; + } + + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + 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 GLboolean test_msb_bit(const GLubyte *src, GLuint bit) +{ + return (src[bit/8] & (1<<(7 - (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-cliprect. + */ +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; + + if (INTEL_DEBUG & DEBUG_PIXEL) + _mesa_printf("%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( GLcontext *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 = intel_drawbuf_region(intel); + struct gl_framebuffer *fb = ctx->DrawBuffer; + GLfloat tmpColor[4]; + GLubyte ubcolor[4]; + GLuint color8888, color565; + unsigned int num_cliprects; + drm_clip_rect_t *cliprects; + int x_off, y_off; + GLsizei bitmap_width = width; + GLsizei bitmap_height = height; + + /* 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; + } + + if (!dst) + return GL_FALSE; + + if (unpack->BufferObj->Name) { + 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 (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]); + + color8888 = INTEL_PACKCOLOR8888(ubcolor[0], ubcolor[1], ubcolor[2], ubcolor[3]); + color565 = INTEL_PACKCOLOR565(ubcolor[0], ubcolor[1], ubcolor[2]); + + if (!intel_check_blit_fragment_ops(ctx, tmpColor[3] == 1.0F)) + return GL_FALSE; + + LOCK_HARDWARE(intel); + + intel_get_cliprects(intel, &cliprects, &num_cliprects, &x_off, &y_off); + if (num_cliprects != 0) { + GLuint i; + GLint orig_dstx = dstx; + GLint orig_dsty = dsty; + + /* 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; + + dstx = x_off + dstx; + dsty = y_off + y_flip(fb, dsty, height); + + for (i = 0; i < num_cliprects; i++) { + int box_x, box_y, box_w, box_h; + GLint px, py; + GLuint stipple[32]; + + box_x = dstx; + box_y = dsty; + box_w = width; + box_h = height; + + /* Clip to drawable cliprect */ + if (!_mesa_clip_to_region(cliprects[i].x1, + cliprects[i].y1, + cliprects[i].x2, + cliprects[i].y2, + &box_x, &box_y, &box_w, &box_h)) + continue; + +#define DY 32 +#define DX 32 + + /* Then, finally, chop it all into chunks that can be + * digested by hardware: + */ + for (py = 0; py < box_h; py += DY) { + for (px = 0; px < box_w; px += DX) { + int h = MIN2(DY, box_h - py); + int w = MIN2(DX, box_w - 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 + (box_x + px - x_off), + -orig_dsty + y_flip(fb, + box_y + py - y_off, h), + w, h, + (GLubyte *)stipple, + 8, + fb->Name == 0 ? GL_TRUE : GL_FALSE) == 0) + continue; + + /* + */ + intelEmitImmediateColorExpandBlit( intel, + dst->cpp, + (GLubyte *)stipple, + sz, + (dst->cpp == 2) ? color565 : color8888, + dst->pitch, + dst->buffer, + 0, + dst->tiling, + box_x + px, + box_y + py, + w, h, + logic_op); + } + } + } + } +out: + UNLOCK_HARDWARE(intel); + + if (INTEL_DEBUG & DEBUG_SYNC) + intel_batchbuffer_flush(intel->batch); + + if (unpack->BufferObj->Name) { + /* done with PBO so unmap it now */ + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + unpack->BufferObj); + } + + return GL_TRUE; +} + +static GLboolean +intel_texture_bitmap(GLcontext * ctx, + GLint dst_x, GLint dst_y, + GLsizei width, GLsizei height, + const struct gl_pixelstore_attrib *unpack, + const GLubyte *bitmap) +{ + struct intel_context *intel = intel_context(ctx); + static const char *fp = + "!!ARBfp1.0\n" + "TEMP val;\n" + "PARAM color=program.local[0];\n" + "TEX val, fragment.texcoord[0], texture[0], 2D;\n" + "ADD val, val.wwww, {-.5, -.5, -.5, -.5};\n" + "KIL val;\n" + "MOV result.color, color;\n" + "END\n"; + GLuint texname; + GLfloat vertices[4][4]; + GLfloat texcoords[4][2]; + GLint old_active_texture; + GLubyte *unpacked_bitmap; + GLubyte *a8_bitmap; + int x, y; + GLfloat dst_z; + + /* We need a fragment program for the KIL effect */ + if (!ctx->Extensions.ARB_fragment_program || + !ctx->Extensions.ARB_vertex_program) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, + "glBitmap fallback: No fragment/vertex program support\n"); + return GL_FALSE; + } + + /* We're going to mess with texturing with no regard to existing texture + * state, so if there is some set up we have to bail. + */ + if (ctx->Texture._EnabledUnits != 0) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glBitmap fallback: texturing enabled\n"); + return GL_FALSE; + } + + /* Can't do textured DrawPixels with a fragment program, unless we were + * to generate a new program that sampled our texture and put the results + * in the fragment color before the user's program started. + */ + if (ctx->FragmentProgram.Enabled) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glBitmap fallback: fragment program enabled\n"); + return GL_FALSE; + } + + if (ctx->VertexProgram.Enabled) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glBitmap fallback: vertex program enabled\n"); + return GL_FALSE; + } + + /* Check that we can load in a texture this big. */ + if (width > (1 << (ctx->Const.MaxTextureLevels - 1)) || + height > (1 << (ctx->Const.MaxTextureLevels - 1))) { + if (INTEL_DEBUG & DEBUG_FALLBACKS) + fprintf(stderr, "glBitmap fallback: bitmap too large (%dx%d)\n", + width, height); + return GL_FALSE; + } + + /* Convert the A1 bitmap to an A8 format suitable for glTexImage */ + if (unpack->BufferObj->Name) { + bitmap = map_pbo(ctx, width, height, unpack, bitmap); + if (bitmap == NULL) + return GL_TRUE; /* even though this is an error, we're done */ + } + unpacked_bitmap = _mesa_unpack_bitmap(width, height, bitmap, + unpack); + a8_bitmap = _mesa_calloc(width * height); + for (y = 0; y < height; y++) { + for (x = 0; x < width; x++) { + if (test_msb_bit(unpacked_bitmap, ALIGN(width, 8) * y + x)) + a8_bitmap[y * width + x] = 0xff; + } + } + _mesa_free(unpacked_bitmap); + if (unpack->BufferObj->Name) { + /* done with PBO so unmap it now */ + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + unpack->BufferObj); + } + + /* Save GL state before we start setting up our drawing */ + _mesa_PushAttrib(GL_ENABLE_BIT | GL_CURRENT_BIT | + GL_VIEWPORT_BIT); + _mesa_PushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT | + GL_CLIENT_PIXEL_STORE_BIT); + old_active_texture = ctx->Texture.CurrentUnit; + + _mesa_Disable(GL_POLYGON_STIPPLE); + + /* Upload our bitmap data to an alpha texture */ + _mesa_ActiveTextureARB(GL_TEXTURE0_ARB); + _mesa_Enable(GL_TEXTURE_2D); + _mesa_GenTextures(1, &texname); + _mesa_BindTexture(GL_TEXTURE_2D, texname); + _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + + _mesa_PixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE); + _mesa_PixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE); + _mesa_PixelStorei(GL_UNPACK_ROW_LENGTH, 0); + _mesa_PixelStorei(GL_UNPACK_SKIP_PIXELS, 0); + _mesa_PixelStorei(GL_UNPACK_SKIP_ROWS, 0); + _mesa_PixelStorei(GL_UNPACK_ALIGNMENT, 1); + _mesa_TexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, + GL_ALPHA, GL_UNSIGNED_BYTE, a8_bitmap); + _mesa_free(a8_bitmap); + + intel_meta_set_fragment_program(intel, &intel->meta.bitmap_fp, fp); + _mesa_ProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 0, + ctx->Current.RasterColor); + intel_meta_set_passthrough_vertex_program(intel); + intel_meta_set_passthrough_transform(intel); + + /* convert rasterpos Z from [0,1] to NDC coord in [-1,1] */ + dst_z = -1.0 + 2.0 * ctx->Current.RasterPos[2]; + + vertices[0][0] = dst_x; + vertices[0][1] = dst_y; + vertices[0][2] = dst_z; + vertices[0][3] = 1.0; + vertices[1][0] = dst_x + width; + vertices[1][1] = dst_y; + vertices[1][2] = dst_z; + vertices[1][3] = 1.0; + vertices[2][0] = dst_x + width; + vertices[2][1] = dst_y + height; + vertices[2][2] = dst_z; + vertices[2][3] = 1.0; + vertices[3][0] = dst_x; + vertices[3][1] = dst_y + height; + vertices[3][2] = dst_z; + vertices[3][3] = 1.0; + + texcoords[0][0] = 0.0; + texcoords[0][1] = 0.0; + texcoords[1][0] = 1.0; + texcoords[1][1] = 0.0; + texcoords[2][0] = 1.0; + texcoords[2][1] = 1.0; + texcoords[3][0] = 0.0; + texcoords[3][1] = 1.0; + + _mesa_VertexPointer(4, GL_FLOAT, 4 * sizeof(GLfloat), &vertices); + _mesa_ClientActiveTextureARB(GL_TEXTURE0); + _mesa_TexCoordPointer(2, GL_FLOAT, 2 * sizeof(GLfloat), &texcoords); + _mesa_Enable(GL_VERTEX_ARRAY); + _mesa_Enable(GL_TEXTURE_COORD_ARRAY); + CALL_DrawArrays(ctx->Exec, (GL_TRIANGLE_FAN, 0, 4)); + + intel_meta_restore_transform(intel); + intel_meta_restore_fragment_program(intel); + intel_meta_restore_vertex_program(intel); + + _mesa_PopClientAttrib(); + _mesa_Disable(GL_TEXTURE_2D); /* asserted that it was disabled at entry */ + _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + old_active_texture); + _mesa_PopAttrib(); + + _mesa_DeleteTextures(1, &texname); + + 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(GLcontext * ctx, + GLint x, GLint y, + GLsizei width, GLsizei height, + const struct gl_pixelstore_attrib *unpack, + const GLubyte * pixels) +{ + if (do_blit_bitmap(ctx, x, y, width, height, + unpack, pixels)) + return; + + if (intel_texture_bitmap(ctx, x, y, width, height, + unpack, pixels)) + return; + + if (INTEL_DEBUG & DEBUG_PIXEL) + _mesa_printf("%s: fallback to swrast\n", __FUNCTION__); + + _swrast_Bitmap(ctx, x, y, width, height, unpack, pixels); +} |