| /************************************************************************** |
| * |
| * Copyright 2003 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. |
| * |
| **************************************************************************/ |
| |
| |
| #include "main/mtypes.h" |
| #include "main/context.h" |
| #include "main/enums.h" |
| #include "main/colormac.h" |
| |
| #include "intel_blit.h" |
| #include "intel_buffers.h" |
| #include "intel_context.h" |
| #include "intel_fbo.h" |
| #include "intel_reg.h" |
| #include "intel_regions.h" |
| #include "intel_batchbuffer.h" |
| |
| #define FILE_DEBUG_FLAG DEBUG_BLIT |
| |
| /** |
| * Copy the back color buffer to the front color buffer. |
| * Used for SwapBuffers(). |
| */ |
| void |
| intelCopyBuffer(const __DRIdrawablePrivate * dPriv, |
| const drm_clip_rect_t * rect) |
| { |
| |
| struct intel_context *intel; |
| const intelScreenPrivate *intelScreen; |
| |
| DBG("%s\n", __FUNCTION__); |
| |
| assert(dPriv); |
| |
| intel = intelScreenContext(dPriv->driScreenPriv->private); |
| if (!intel) |
| return; |
| |
| intelScreen = intel->intelScreen; |
| |
| /* The LOCK_HARDWARE is required for the cliprects. Buffer offsets |
| * should work regardless. |
| */ |
| LOCK_HARDWARE(intel); |
| |
| if (dPriv && dPriv->numClipRects) { |
| struct intel_framebuffer *intel_fb = dPriv->driverPrivate; |
| struct intel_region *src, *dst; |
| int nbox = dPriv->numClipRects; |
| drm_clip_rect_t *pbox = dPriv->pClipRects; |
| int cpp; |
| int src_pitch, dst_pitch; |
| unsigned short src_x, src_y; |
| int BR13, CMD; |
| int i; |
| dri_bo *aper_array[3]; |
| |
| src = intel_get_rb_region(&intel_fb->Base, BUFFER_BACK_LEFT); |
| dst = intel_get_rb_region(&intel_fb->Base, BUFFER_FRONT_LEFT); |
| |
| src_pitch = src->pitch * src->cpp; |
| dst_pitch = dst->pitch * dst->cpp; |
| |
| cpp = src->cpp; |
| |
| ASSERT(intel_fb); |
| ASSERT(intel_fb->Base.Name == 0); /* Not a user-created FBO */ |
| ASSERT(src); |
| ASSERT(dst); |
| ASSERT(src->cpp == dst->cpp); |
| |
| if (cpp == 2) { |
| BR13 = (0xCC << 16) | BR13_565; |
| CMD = XY_SRC_COPY_BLT_CMD; |
| } |
| else { |
| BR13 = (0xCC << 16) | BR13_8888; |
| CMD = XY_SRC_COPY_BLT_CMD | XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB; |
| } |
| |
| assert(src->tiling != I915_TILING_Y); |
| assert(dst->tiling != I915_TILING_Y); |
| #ifndef I915 |
| if (src->tiling != I915_TILING_NONE) { |
| CMD |= XY_SRC_TILED; |
| src_pitch /= 4; |
| } |
| if (dst->tiling != I915_TILING_NONE) { |
| CMD |= XY_DST_TILED; |
| dst_pitch /= 4; |
| } |
| #endif |
| /* do space/cliprects check before going any further */ |
| intel_batchbuffer_require_space(intel->batch, 8 * 4, |
| REFERENCES_CLIPRECTS); |
| again: |
| aper_array[0] = intel->batch->buf; |
| aper_array[1] = dst->buffer; |
| aper_array[2] = src->buffer; |
| |
| if (dri_bufmgr_check_aperture_space(aper_array, 3) != 0) { |
| intel_batchbuffer_flush(intel->batch); |
| goto again; |
| } |
| |
| for (i = 0; i < nbox; i++, pbox++) { |
| drm_clip_rect_t box = *pbox; |
| |
| if (rect) { |
| if (!intel_intersect_cliprects(&box, &box, rect)) |
| continue; |
| } |
| |
| if (box.x1 >= box.x2 || |
| box.y1 >= box.y2) |
| continue; |
| |
| assert(box.x1 < box.x2); |
| assert(box.y1 < box.y2); |
| src_x = box.x1 - dPriv->x + dPriv->backX; |
| src_y = box.y1 - dPriv->y + dPriv->backY; |
| |
| BEGIN_BATCH(8, REFERENCES_CLIPRECTS); |
| OUT_BATCH(CMD); |
| OUT_BATCH(BR13 | dst_pitch); |
| OUT_BATCH((box.y1 << 16) | box.x1); |
| OUT_BATCH((box.y2 << 16) | box.x2); |
| |
| OUT_RELOC(dst->buffer, |
| I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, |
| 0); |
| OUT_BATCH((src_y << 16) | src_x); |
| OUT_BATCH(src_pitch); |
| OUT_RELOC(src->buffer, |
| I915_GEM_DOMAIN_RENDER, 0, |
| 0); |
| ADVANCE_BATCH(); |
| } |
| |
| /* Flush the rendering and the batch so that the results all land on the |
| * screen in a timely fashion. |
| */ |
| intel_batchbuffer_emit_mi_flush(intel->batch); |
| intel_batchbuffer_flush(intel->batch); |
| } |
| |
| UNLOCK_HARDWARE(intel); |
| } |
| |
| static GLuint translate_raster_op(GLenum logicop) |
| { |
| switch(logicop) { |
| case GL_CLEAR: return 0x00; |
| case GL_AND: return 0x88; |
| case GL_AND_REVERSE: return 0x44; |
| case GL_COPY: return 0xCC; |
| case GL_AND_INVERTED: return 0x22; |
| case GL_NOOP: return 0xAA; |
| case GL_XOR: return 0x66; |
| case GL_OR: return 0xEE; |
| case GL_NOR: return 0x11; |
| case GL_EQUIV: return 0x99; |
| case GL_INVERT: return 0x55; |
| case GL_OR_REVERSE: return 0xDD; |
| case GL_COPY_INVERTED: return 0x33; |
| case GL_OR_INVERTED: return 0xBB; |
| case GL_NAND: return 0x77; |
| case GL_SET: return 0xFF; |
| default: return 0; |
| } |
| } |
| |
| |
| /* Copy BitBlt |
| */ |
| GLboolean |
| intelEmitCopyBlit(struct intel_context *intel, |
| GLuint cpp, |
| GLshort src_pitch, |
| dri_bo *src_buffer, |
| GLuint src_offset, |
| uint32_t src_tiling, |
| GLshort dst_pitch, |
| dri_bo *dst_buffer, |
| GLuint dst_offset, |
| uint32_t dst_tiling, |
| GLshort src_x, GLshort src_y, |
| GLshort dst_x, GLshort dst_y, |
| GLshort w, GLshort h, |
| GLenum logic_op) |
| { |
| GLuint CMD, BR13, pass = 0; |
| int dst_y2 = dst_y + h; |
| int dst_x2 = dst_x + w; |
| dri_bo *aper_array[3]; |
| BATCH_LOCALS; |
| |
| if (dst_tiling != I915_TILING_NONE) { |
| if (dst_offset & 4095) |
| return GL_FALSE; |
| if (dst_tiling == I915_TILING_Y) |
| return GL_FALSE; |
| } |
| if (src_tiling != I915_TILING_NONE) { |
| if (src_offset & 4095) |
| return GL_FALSE; |
| if (src_tiling == I915_TILING_Y) |
| return GL_FALSE; |
| } |
| |
| /* do space/cliprects check before going any further */ |
| do { |
| aper_array[0] = intel->batch->buf; |
| aper_array[1] = dst_buffer; |
| aper_array[2] = src_buffer; |
| |
| if (dri_bufmgr_check_aperture_space(aper_array, 3) != 0) { |
| intel_batchbuffer_flush(intel->batch); |
| pass++; |
| } else |
| break; |
| } while (pass < 2); |
| |
| if (pass >= 2) { |
| LOCK_HARDWARE(intel); |
| dri_bo_map(dst_buffer, GL_TRUE); |
| dri_bo_map(src_buffer, GL_FALSE); |
| _mesa_copy_rect((GLubyte *)dst_buffer->virtual + dst_offset, |
| cpp, |
| dst_pitch, |
| dst_x, dst_y, |
| w, h, |
| (GLubyte *)src_buffer->virtual + src_offset, |
| src_pitch, |
| src_x, src_y); |
| |
| dri_bo_unmap(src_buffer); |
| dri_bo_unmap(dst_buffer); |
| UNLOCK_HARDWARE(intel); |
| |
| return GL_TRUE; |
| } |
| |
| intel_batchbuffer_require_space(intel->batch, 8 * 4, NO_LOOP_CLIPRECTS); |
| DBG("%s src:buf(%p)/%d+%d %d,%d dst:buf(%p)/%d+%d %d,%d sz:%dx%d\n", |
| __FUNCTION__, |
| src_buffer, src_pitch, src_offset, src_x, src_y, |
| dst_buffer, dst_pitch, dst_offset, dst_x, dst_y, w, h); |
| |
| src_pitch *= cpp; |
| dst_pitch *= cpp; |
| |
| BR13 = translate_raster_op(logic_op) << 16; |
| |
| switch (cpp) { |
| case 1: |
| CMD = XY_SRC_COPY_BLT_CMD; |
| break; |
| case 2: |
| BR13 |= BR13_565; |
| CMD = XY_SRC_COPY_BLT_CMD; |
| break; |
| case 4: |
| BR13 |= BR13_8888; |
| CMD = XY_SRC_COPY_BLT_CMD | XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB; |
| break; |
| default: |
| return GL_FALSE; |
| } |
| |
| #ifndef I915 |
| if (dst_tiling != I915_TILING_NONE) { |
| CMD |= XY_DST_TILED; |
| dst_pitch /= 4; |
| } |
| if (src_tiling != I915_TILING_NONE) { |
| CMD |= XY_SRC_TILED; |
| src_pitch /= 4; |
| } |
| #endif |
| |
| if (dst_y2 <= dst_y || dst_x2 <= dst_x) { |
| return GL_TRUE; |
| } |
| |
| assert(dst_x < dst_x2); |
| assert(dst_y < dst_y2); |
| |
| BEGIN_BATCH(8, NO_LOOP_CLIPRECTS); |
| OUT_BATCH(CMD); |
| OUT_BATCH(BR13 | (uint16_t)dst_pitch); |
| OUT_BATCH((dst_y << 16) | dst_x); |
| OUT_BATCH((dst_y2 << 16) | dst_x2); |
| OUT_RELOC(dst_buffer, |
| I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, |
| dst_offset); |
| OUT_BATCH((src_y << 16) | src_x); |
| OUT_BATCH((uint16_t)src_pitch); |
| OUT_RELOC(src_buffer, |
| I915_GEM_DOMAIN_RENDER, 0, |
| src_offset); |
| ADVANCE_BATCH(); |
| |
| intel_batchbuffer_emit_mi_flush(intel->batch); |
| |
| return GL_TRUE; |
| } |
| |
| |
| /** |
| * Use blitting to clear the renderbuffers named by 'flags'. |
| * Note: we can't use the ctx->DrawBuffer->_ColorDrawBufferIndexes field |
| * since that might include software renderbuffers or renderbuffers |
| * which we're clearing with triangles. |
| * \param mask bitmask of BUFFER_BIT_* values indicating buffers to clear |
| */ |
| void |
| intelClearWithBlit(GLcontext *ctx, GLbitfield mask) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| struct gl_framebuffer *fb = ctx->DrawBuffer; |
| GLuint clear_depth; |
| GLbitfield skipBuffers = 0; |
| unsigned int num_cliprects; |
| struct drm_clip_rect *cliprects; |
| int x_off, y_off; |
| BATCH_LOCALS; |
| |
| /* |
| * Compute values for clearing the buffers. |
| */ |
| clear_depth = 0; |
| if (mask & BUFFER_BIT_DEPTH) { |
| clear_depth = (GLuint) (fb->_DepthMax * ctx->Depth.Clear); |
| } |
| if (mask & BUFFER_BIT_STENCIL) { |
| clear_depth |= (ctx->Stencil.Clear & 0xff) << 24; |
| } |
| |
| /* If clearing both depth and stencil, skip BUFFER_BIT_STENCIL in |
| * the loop below. |
| */ |
| if ((mask & BUFFER_BIT_DEPTH) && (mask & BUFFER_BIT_STENCIL)) { |
| skipBuffers = BUFFER_BIT_STENCIL; |
| } |
| |
| LOCK_HARDWARE(intel); |
| |
| intel_get_cliprects(intel, &cliprects, &num_cliprects, &x_off, &y_off); |
| if (num_cliprects) { |
| GLint cx, cy, cw, ch; |
| drm_clip_rect_t clear; |
| int i; |
| |
| /* Get clear bounds after locking */ |
| cx = fb->_Xmin; |
| cy = fb->_Ymin; |
| cw = fb->_Xmax - cx; |
| ch = fb->_Ymax - cy; |
| |
| if (fb->Name == 0) { |
| /* clearing a window */ |
| |
| /* flip top to bottom */ |
| clear.x1 = cx + x_off; |
| clear.y1 = intel->driDrawable->y + intel->driDrawable->h - cy - ch; |
| clear.x2 = clear.x1 + cw; |
| clear.y2 = clear.y1 + ch; |
| } |
| else { |
| /* clearing FBO */ |
| assert(num_cliprects == 1); |
| assert(cliprects == &intel->fboRect); |
| clear.x1 = cx; |
| clear.y1 = cy; |
| clear.x2 = clear.x1 + cw; |
| clear.y2 = clear.y1 + ch; |
| /* no change to mask */ |
| } |
| |
| for (i = 0; i < num_cliprects; i++) { |
| const drm_clip_rect_t *box = &cliprects[i]; |
| drm_clip_rect_t b; |
| GLuint buf; |
| GLuint clearMask = mask; /* use copy, since we modify it below */ |
| GLboolean all = (cw == fb->Width && ch == fb->Height); |
| |
| if (!all) { |
| intel_intersect_cliprects(&b, &clear, box); |
| } |
| else { |
| b = *box; |
| } |
| |
| if (b.x1 >= b.x2 || b.y1 >= b.y2) |
| continue; |
| |
| if (0) |
| _mesa_printf("clear %d,%d..%d,%d, mask %x\n", |
| b.x1, b.y1, b.x2, b.y2, mask); |
| |
| /* Loop over all renderbuffers */ |
| for (buf = 0; buf < BUFFER_COUNT && clearMask; buf++) { |
| const GLbitfield bufBit = 1 << buf; |
| if ((clearMask & bufBit) && !(bufBit & skipBuffers)) { |
| /* OK, clear this renderbuffer */ |
| struct intel_renderbuffer *irb = intel_get_renderbuffer(fb, buf); |
| dri_bo *write_buffer = |
| intel_region_buffer(intel, irb->region, |
| all ? INTEL_WRITE_FULL : |
| INTEL_WRITE_PART); |
| int x1 = b.x1 + irb->region->draw_x; |
| int y1 = b.y1 + irb->region->draw_y; |
| int x2 = b.x2 + irb->region->draw_x; |
| int y2 = b.y2 + irb->region->draw_y; |
| |
| GLuint clearVal; |
| GLint pitch, cpp; |
| GLuint BR13, CMD; |
| |
| pitch = irb->region->pitch; |
| cpp = irb->region->cpp; |
| |
| DBG("%s dst:buf(%p)/%d %d,%d sz:%dx%d\n", |
| __FUNCTION__, |
| irb->region->buffer, (pitch * cpp), |
| x1, y1, x2 - x1, y2 - y1); |
| |
| BR13 = 0xf0 << 16; |
| CMD = XY_COLOR_BLT_CMD; |
| |
| /* Setup the blit command */ |
| if (cpp == 4) { |
| BR13 |= BR13_8888; |
| if (buf == BUFFER_DEPTH || buf == BUFFER_STENCIL) { |
| if (clearMask & BUFFER_BIT_DEPTH) |
| CMD |= XY_BLT_WRITE_RGB; |
| if (clearMask & BUFFER_BIT_STENCIL) |
| CMD |= XY_BLT_WRITE_ALPHA; |
| } |
| else { |
| /* clearing RGBA */ |
| CMD |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB; |
| } |
| } |
| else { |
| ASSERT(cpp == 2); |
| BR13 |= BR13_565; |
| } |
| |
| assert(irb->region->tiling != I915_TILING_Y); |
| |
| #ifndef I915 |
| if (irb->region->tiling != I915_TILING_NONE) { |
| CMD |= XY_DST_TILED; |
| pitch /= 4; |
| } |
| #endif |
| BR13 |= (pitch * cpp); |
| |
| if (buf == BUFFER_DEPTH || buf == BUFFER_STENCIL) { |
| clearVal = clear_depth; |
| } |
| else { |
| uint8_t clear[4]; |
| GLclampf *color = ctx->Color.ClearColor; |
| |
| CLAMPED_FLOAT_TO_UBYTE(clear[0], color[0]); |
| CLAMPED_FLOAT_TO_UBYTE(clear[1], color[1]); |
| CLAMPED_FLOAT_TO_UBYTE(clear[2], color[2]); |
| CLAMPED_FLOAT_TO_UBYTE(clear[3], color[3]); |
| |
| switch (irb->Base.Format) { |
| case MESA_FORMAT_ARGB8888: |
| case MESA_FORMAT_XRGB8888: |
| clearVal = intel->ClearColor8888; |
| break; |
| case MESA_FORMAT_RGB565: |
| clearVal = intel->ClearColor565; |
| break; |
| case MESA_FORMAT_ARGB4444: |
| clearVal = PACK_COLOR_4444(clear[3], clear[0], |
| clear[1], clear[2]); |
| break; |
| case MESA_FORMAT_ARGB1555: |
| clearVal = PACK_COLOR_1555(clear[3], clear[0], |
| clear[1], clear[2]); |
| break; |
| default: |
| _mesa_problem(ctx, "Unexpected renderbuffer format: %d\n", |
| irb->Base.Format); |
| clearVal = 0; |
| } |
| } |
| |
| /* |
| _mesa_debug(ctx, "hardware blit clear buf %d rb id %d\n", |
| buf, irb->Base.Name); |
| */ |
| |
| assert(x1 < x2); |
| assert(y1 < y2); |
| |
| BEGIN_BATCH(6, REFERENCES_CLIPRECTS); |
| OUT_BATCH(CMD); |
| OUT_BATCH(BR13); |
| OUT_BATCH((y1 << 16) | x1); |
| OUT_BATCH((y2 << 16) | x2); |
| OUT_RELOC(write_buffer, |
| I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, |
| 0); |
| OUT_BATCH(clearVal); |
| ADVANCE_BATCH(); |
| clearMask &= ~bufBit; /* turn off bit, for faster loop exit */ |
| } |
| } |
| } |
| } |
| |
| UNLOCK_HARDWARE(intel); |
| } |
| |
| GLboolean |
| intelEmitImmediateColorExpandBlit(struct intel_context *intel, |
| GLuint cpp, |
| GLubyte *src_bits, GLuint src_size, |
| GLuint fg_color, |
| GLshort dst_pitch, |
| dri_bo *dst_buffer, |
| GLuint dst_offset, |
| uint32_t dst_tiling, |
| GLshort x, GLshort y, |
| GLshort w, GLshort h, |
| GLenum logic_op) |
| { |
| int dwords = ALIGN(src_size, 8) / 4; |
| uint32_t opcode, br13, blit_cmd; |
| |
| if (dst_tiling != I915_TILING_NONE) { |
| if (dst_offset & 4095) |
| return GL_FALSE; |
| if (dst_tiling == I915_TILING_Y) |
| return GL_FALSE; |
| } |
| |
| assert( logic_op - GL_CLEAR >= 0 ); |
| assert( logic_op - GL_CLEAR < 0x10 ); |
| assert(dst_pitch > 0); |
| |
| if (w < 0 || h < 0) |
| return GL_TRUE; |
| |
| dst_pitch *= cpp; |
| |
| DBG("%s dst:buf(%p)/%d+%d %d,%d sz:%dx%d, %d bytes %d dwords\n", |
| __FUNCTION__, |
| dst_buffer, dst_pitch, dst_offset, x, y, w, h, src_size, dwords); |
| |
| intel_batchbuffer_require_space( intel->batch, |
| (8 * 4) + |
| (3 * 4) + |
| dwords * 4, |
| REFERENCES_CLIPRECTS ); |
| |
| opcode = XY_SETUP_BLT_CMD; |
| if (cpp == 4) |
| opcode |= XY_BLT_WRITE_ALPHA | XY_BLT_WRITE_RGB; |
| #ifndef I915 |
| if (dst_tiling != I915_TILING_NONE) { |
| opcode |= XY_DST_TILED; |
| dst_pitch /= 4; |
| } |
| #endif |
| |
| br13 = dst_pitch | (translate_raster_op(logic_op) << 16) | (1 << 29); |
| if (cpp == 2) |
| br13 |= BR13_565; |
| else |
| br13 |= BR13_8888; |
| |
| blit_cmd = XY_TEXT_IMMEDIATE_BLIT_CMD | XY_TEXT_BYTE_PACKED; /* packing? */ |
| if (dst_tiling != I915_TILING_NONE) |
| blit_cmd |= XY_DST_TILED; |
| |
| BEGIN_BATCH(8 + 3, REFERENCES_CLIPRECTS); |
| OUT_BATCH(opcode); |
| OUT_BATCH(br13); |
| OUT_BATCH((0 << 16) | 0); /* clip x1, y1 */ |
| OUT_BATCH((100 << 16) | 100); /* clip x2, y2 */ |
| OUT_RELOC(dst_buffer, |
| I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, |
| dst_offset); |
| OUT_BATCH(0); /* bg */ |
| OUT_BATCH(fg_color); /* fg */ |
| OUT_BATCH(0); /* pattern base addr */ |
| |
| OUT_BATCH(blit_cmd | ((3 - 2) + dwords)); |
| OUT_BATCH((y << 16) | x); |
| OUT_BATCH(((y + h) << 16) | (x + w)); |
| ADVANCE_BATCH(); |
| |
| intel_batchbuffer_data( intel->batch, |
| src_bits, |
| dwords * 4, |
| REFERENCES_CLIPRECTS ); |
| |
| intel_batchbuffer_emit_mi_flush(intel->batch); |
| |
| return GL_TRUE; |
| } |
| |
| /* We don't have a memmove-type blit like some other hardware, so we'll do a |
| * rectangular blit covering a large space, then emit 1-scanline blit at the |
| * end to cover the last if we need. |
| */ |
| void |
| intel_emit_linear_blit(struct intel_context *intel, |
| drm_intel_bo *dst_bo, |
| unsigned int dst_offset, |
| drm_intel_bo *src_bo, |
| unsigned int src_offset, |
| unsigned int size) |
| { |
| GLuint pitch, height; |
| |
| /* The pitch is a signed value. */ |
| pitch = MIN2(size, (1 << 15) - 1); |
| height = size / pitch; |
| intelEmitCopyBlit(intel, 1, |
| pitch, src_bo, src_offset, I915_TILING_NONE, |
| pitch, dst_bo, dst_offset, I915_TILING_NONE, |
| 0, 0, /* src x/y */ |
| 0, 0, /* dst x/y */ |
| pitch, height, /* w, h */ |
| GL_COPY); |
| |
| src_offset += pitch * height; |
| dst_offset += pitch * height; |
| size -= pitch * height; |
| assert (size < (1 << 15)); |
| if (size != 0) { |
| intelEmitCopyBlit(intel, 1, |
| size, src_bo, src_offset, I915_TILING_NONE, |
| size, dst_bo, dst_offset, I915_TILING_NONE, |
| 0, 0, /* src x/y */ |
| 0, 0, /* dst x/y */ |
| size, 1, /* w, h */ |
| GL_COPY); |
| } |
| } |