| 0,0 → 1,531 |
|---|
| /********************************************************** |
| * Copyright 2008-2009 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, sublicense, 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 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 |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * 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 "util/u_inlines.h" |
| #include "pipe/p_defines.h" |
| #include "util/u_math.h" |
| |
| #include "svga_context.h" |
| #include "svga_state.h" |
| #include "svga_cmd.h" |
| #include "svga_debug.h" |
| |
| |
| /*********************************************************************** |
| * Hardware state update |
| */ |
| |
| |
| static enum pipe_error |
| emit_framebuffer( struct svga_context *svga, |
| unsigned dirty ) |
| { |
| const struct pipe_framebuffer_state *curr = &svga->curr.framebuffer; |
| struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer; |
| boolean reemit = svga->rebind.rendertargets; |
| unsigned i; |
| enum pipe_error ret; |
| |
| /* |
| * We need to reemit non-null surface bindings, even when they are not |
| * dirty, to ensure that the resources are paged in. |
| */ |
| |
| for(i = 0; i < PIPE_MAX_COLOR_BUFS; ++i) { |
| if (curr->cbufs[i] != hw->cbufs[i] || |
| (reemit && hw->cbufs[i])) { |
| if (svga->curr.nr_fbs++ > 8) |
| return PIPE_ERROR_OUT_OF_MEMORY; |
| |
| ret = SVGA3D_SetRenderTarget(svga->swc, SVGA3D_RT_COLOR0 + i, curr->cbufs[i]); |
| if (ret != PIPE_OK) |
| return ret; |
| |
| pipe_surface_reference(&hw->cbufs[i], curr->cbufs[i]); |
| } |
| } |
| |
| |
| if (curr->zsbuf != hw->zsbuf || |
| (reemit && hw->zsbuf)) { |
| ret = SVGA3D_SetRenderTarget(svga->swc, SVGA3D_RT_DEPTH, curr->zsbuf); |
| if (ret != PIPE_OK) |
| return ret; |
| |
| if (curr->zsbuf && |
| curr->zsbuf->format == PIPE_FORMAT_S8_UINT_Z24_UNORM) { |
| ret = SVGA3D_SetRenderTarget(svga->swc, SVGA3D_RT_STENCIL, curr->zsbuf); |
| if (ret != PIPE_OK) |
| return ret; |
| } |
| else { |
| ret = SVGA3D_SetRenderTarget(svga->swc, SVGA3D_RT_STENCIL, NULL); |
| if (ret != PIPE_OK) |
| return ret; |
| } |
| |
| pipe_surface_reference(&hw->zsbuf, curr->zsbuf); |
| } |
| |
| svga->rebind.rendertargets = FALSE; |
| |
| return PIPE_OK; |
| } |
| |
| |
| /* |
| * Rebind rendertargets. |
| * |
| * Similar to emit_framebuffer, but without any state checking/update. |
| * |
| * Called at the beginning of every new command buffer to ensure that |
| * non-dirty rendertargets are properly paged-in. |
| */ |
| enum pipe_error |
| svga_reemit_framebuffer_bindings(struct svga_context *svga) |
| { |
| struct pipe_framebuffer_state *hw = &svga->state.hw_clear.framebuffer; |
| unsigned i; |
| enum pipe_error ret; |
| |
| assert(svga->rebind.rendertargets); |
| |
| for (i = 0; i < MIN2(PIPE_MAX_COLOR_BUFS, 8); ++i) { |
| if (hw->cbufs[i]) { |
| ret = SVGA3D_SetRenderTarget(svga->swc, SVGA3D_RT_COLOR0 + i, hw->cbufs[i]); |
| if (ret != PIPE_OK) { |
| return ret; |
| } |
| } |
| } |
| |
| if (hw->zsbuf) { |
| ret = SVGA3D_SetRenderTarget(svga->swc, SVGA3D_RT_DEPTH, hw->zsbuf); |
| if (ret != PIPE_OK) { |
| return ret; |
| } |
| |
| if (hw->zsbuf && |
| hw->zsbuf->format == PIPE_FORMAT_S8_UINT_Z24_UNORM) { |
| ret = SVGA3D_SetRenderTarget(svga->swc, SVGA3D_RT_STENCIL, hw->zsbuf); |
| if (ret != PIPE_OK) { |
| return ret; |
| } |
| } |
| else { |
| ret = SVGA3D_SetRenderTarget(svga->swc, SVGA3D_RT_STENCIL, NULL); |
| if (ret != PIPE_OK) { |
| return ret; |
| } |
| } |
| } |
| |
| svga->rebind.rendertargets = FALSE; |
| |
| return PIPE_OK; |
| } |
| |
| |
| struct svga_tracked_state svga_hw_framebuffer = |
| { |
| "hw framebuffer state", |
| SVGA_NEW_FRAME_BUFFER, |
| emit_framebuffer |
| }; |
| |
| |
| |
| |
| /*********************************************************************** |
| */ |
| |
| static enum pipe_error |
| emit_viewport( struct svga_context *svga, |
| unsigned dirty ) |
| { |
| const struct pipe_viewport_state *viewport = &svga->curr.viewport; |
| struct svga_prescale prescale; |
| SVGA3dRect rect; |
| /* Not sure if this state is relevant with POSITIONT. Probably |
| * not, but setting to 0,1 avoids some state pingponging. |
| */ |
| float range_min = 0.0; |
| float range_max = 1.0; |
| float flip = -1.0; |
| boolean degenerate = FALSE; |
| boolean invertY = FALSE; |
| enum pipe_error ret; |
| |
| float fb_width = (float) svga->curr.framebuffer.width; |
| float fb_height = (float) svga->curr.framebuffer.height; |
| |
| float fx = viewport->scale[0] * -1.0f + viewport->translate[0]; |
| float fy = flip * viewport->scale[1] * -1.0f + viewport->translate[1]; |
| float fw = viewport->scale[0] * 2.0f; |
| float fh = flip * viewport->scale[1] * 2.0f; |
| |
| memset( &prescale, 0, sizeof(prescale) ); |
| |
| /* Examine gallium viewport transformation and produce a screen |
| * rectangle and possibly vertex shader pre-transformation to |
| * get the same results. |
| */ |
| |
| SVGA_DBG(DEBUG_VIEWPORT, |
| "\ninitial %f,%f %fx%f\n", |
| fx, |
| fy, |
| fw, |
| fh); |
| |
| prescale.scale[0] = 1.0; |
| prescale.scale[1] = 1.0; |
| prescale.scale[2] = 1.0; |
| prescale.scale[3] = 1.0; |
| prescale.translate[0] = 0; |
| prescale.translate[1] = 0; |
| prescale.translate[2] = 0; |
| prescale.translate[3] = 0; |
| prescale.enabled = TRUE; |
| |
| |
| |
| if (fw < 0) { |
| prescale.scale[0] *= -1.0f; |
| prescale.translate[0] += -fw; |
| fw = -fw; |
| fx = viewport->scale[0] * 1.0f + viewport->translate[0]; |
| } |
| |
| if (fh < 0.0) { |
| prescale.translate[1] = fh - 1.0f + fy * 2.0f; |
| fh = -fh; |
| fy -= fh; |
| prescale.scale[1] = -1.0f; |
| invertY = TRUE; |
| } |
| |
| if (fx < 0) { |
| prescale.translate[0] += fx; |
| prescale.scale[0] *= fw / (fw + fx); |
| fw += fx; |
| fx = 0.0f; |
| } |
| |
| if (fy < 0) { |
| if (invertY) { |
| prescale.translate[1] -= fy; |
| } |
| else { |
| prescale.translate[1] += fy; |
| } |
| prescale.scale[1] *= fh / (fh + fy); |
| fh += fy; |
| fy = 0.0f; |
| } |
| |
| if (fx + fw > fb_width) { |
| prescale.scale[0] *= fw / (fb_width - fx); |
| prescale.translate[0] -= fx * (fw / (fb_width - fx)); |
| prescale.translate[0] += fx; |
| fw = fb_width - fx; |
| |
| } |
| |
| if (fy + fh > fb_height) { |
| prescale.scale[1] *= fh / (fb_height - fy); |
| if (invertY) { |
| float in = fb_height - fy; /* number of vp pixels inside view */ |
| float out = fy + fh - fb_height; /* number of vp pixels out of view */ |
| prescale.translate[1] += fy * out / in; |
| } |
| else { |
| prescale.translate[1] -= fy * (fh / (fb_height - fy)); |
| prescale.translate[1] += fy; |
| } |
| fh = fb_height - fy; |
| } |
| |
| if (fw < 0 || fh < 0) { |
| fw = fh = fx = fy = 0; |
| degenerate = TRUE; |
| goto out; |
| } |
| |
| |
| /* D3D viewport is integer space. Convert fx,fy,etc. to |
| * integers. |
| * |
| * TODO: adjust pretranslate correct for any subpixel error |
| * introduced converting to integers. |
| */ |
| rect.x = (uint32) fx; |
| rect.y = (uint32) fy; |
| rect.w = (uint32) fw; |
| rect.h = (uint32) fh; |
| |
| SVGA_DBG(DEBUG_VIEWPORT, |
| "viewport error %f,%f %fx%f\n", |
| fabs((float)rect.x - fx), |
| fabs((float)rect.y - fy), |
| fabs((float)rect.w - fw), |
| fabs((float)rect.h - fh)); |
| |
| SVGA_DBG(DEBUG_VIEWPORT, |
| "viewport %d,%d %dx%d\n", |
| rect.x, |
| rect.y, |
| rect.w, |
| rect.h); |
| |
| |
| /* Finally, to get GL rasterization rules, need to tweak the |
| * screen-space coordinates slightly relative to D3D which is |
| * what hardware implements natively. |
| */ |
| if (svga->curr.rast->templ.half_pixel_center) { |
| float adjust_x = 0.0; |
| float adjust_y = 0.0; |
| |
| switch (svga->curr.reduced_prim) { |
| case PIPE_PRIM_LINES: |
| adjust_x = -0.5; |
| adjust_y = 0; |
| break; |
| case PIPE_PRIM_POINTS: |
| case PIPE_PRIM_TRIANGLES: |
| adjust_x = -0.5; |
| adjust_y = -0.5; |
| break; |
| } |
| |
| if (invertY) |
| adjust_y = -adjust_y; |
| |
| prescale.translate[0] += adjust_x; |
| prescale.translate[1] += adjust_y; |
| prescale.translate[2] = 0.5; /* D3D clip space */ |
| prescale.scale[2] = 0.5; /* D3D clip space */ |
| } |
| |
| |
| range_min = viewport->scale[2] * -1.0f + viewport->translate[2]; |
| range_max = viewport->scale[2] * 1.0f + viewport->translate[2]; |
| |
| /* D3D (and by implication SVGA) doesn't like dealing with zmax |
| * less than zmin. Detect that case, flip the depth range and |
| * invert our z-scale factor to achieve the same effect. |
| */ |
| if (range_min > range_max) { |
| float range_tmp; |
| range_tmp = range_min; |
| range_min = range_max; |
| range_max = range_tmp; |
| prescale.scale[2] = -prescale.scale[2]; |
| } |
| |
| if (prescale.enabled) { |
| float H[2]; |
| float J[2]; |
| int i; |
| |
| SVGA_DBG(DEBUG_VIEWPORT, |
| "prescale %f,%f %fx%f\n", |
| prescale.translate[0], |
| prescale.translate[1], |
| prescale.scale[0], |
| prescale.scale[1]); |
| |
| H[0] = (float)rect.w / 2.0f; |
| H[1] = -(float)rect.h / 2.0f; |
| J[0] = (float)rect.x + (float)rect.w / 2.0f; |
| J[1] = (float)rect.y + (float)rect.h / 2.0f; |
| |
| SVGA_DBG(DEBUG_VIEWPORT, |
| "H %f,%f\n" |
| "J %fx%f\n", |
| H[0], |
| H[1], |
| J[0], |
| J[1]); |
| |
| /* Adjust prescale to take into account the fact that it is |
| * going to be applied prior to the perspective divide and |
| * viewport transformation. |
| * |
| * Vwin = H(Vc/Vc.w) + J |
| * |
| * We want to tweak Vwin with scale and translation from above, |
| * as in: |
| * |
| * Vwin' = S Vwin + T |
| * |
| * But we can only modify the values at Vc. Plugging all the |
| * above together, and rearranging, eventually we get: |
| * |
| * Vwin' = H(Vc'/Vc'.w) + J |
| * where: |
| * Vc' = SVc + KVc.w |
| * K = (T + (S-1)J) / H |
| * |
| * Overwrite prescale.translate with values for K: |
| */ |
| for (i = 0; i < 2; i++) { |
| prescale.translate[i] = ((prescale.translate[i] + |
| (prescale.scale[i] - 1.0f) * J[i]) / H[i]); |
| } |
| |
| SVGA_DBG(DEBUG_VIEWPORT, |
| "clipspace %f,%f %fx%f\n", |
| prescale.translate[0], |
| prescale.translate[1], |
| prescale.scale[0], |
| prescale.scale[1]); |
| } |
| |
| out: |
| if (degenerate) { |
| rect.x = 0; |
| rect.y = 0; |
| rect.w = 1; |
| rect.h = 1; |
| prescale.enabled = FALSE; |
| } |
| |
| if (memcmp(&rect, &svga->state.hw_clear.viewport, sizeof(rect)) != 0) { |
| ret = SVGA3D_SetViewport(svga->swc, &rect); |
| if(ret != PIPE_OK) |
| return ret; |
| |
| memcpy(&svga->state.hw_clear.viewport, &rect, sizeof(rect)); |
| assert(sizeof(rect) == sizeof(svga->state.hw_clear.viewport)); |
| } |
| |
| if (svga->state.hw_clear.depthrange.zmin != range_min || |
| svga->state.hw_clear.depthrange.zmax != range_max) |
| { |
| ret = SVGA3D_SetZRange(svga->swc, range_min, range_max ); |
| if(ret != PIPE_OK) |
| return ret; |
| |
| svga->state.hw_clear.depthrange.zmin = range_min; |
| svga->state.hw_clear.depthrange.zmax = range_max; |
| } |
| |
| if (memcmp(&prescale, &svga->state.hw_clear.prescale, sizeof prescale) != 0) { |
| svga->dirty |= SVGA_NEW_PRESCALE; |
| svga->state.hw_clear.prescale = prescale; |
| } |
| |
| return PIPE_OK; |
| } |
| |
| |
| struct svga_tracked_state svga_hw_viewport = |
| { |
| "hw viewport state", |
| ( SVGA_NEW_FRAME_BUFFER | |
| SVGA_NEW_VIEWPORT | |
| SVGA_NEW_RAST | |
| SVGA_NEW_REDUCED_PRIMITIVE ), |
| emit_viewport |
| }; |
| |
| |
| /*********************************************************************** |
| * Scissor state |
| */ |
| static enum pipe_error |
| emit_scissor_rect( struct svga_context *svga, |
| unsigned dirty ) |
| { |
| const struct pipe_scissor_state *scissor = &svga->curr.scissor; |
| SVGA3dRect rect; |
| |
| rect.x = scissor->minx; |
| rect.y = scissor->miny; |
| rect.w = scissor->maxx - scissor->minx; /* + 1 ?? */ |
| rect.h = scissor->maxy - scissor->miny; /* + 1 ?? */ |
| |
| return SVGA3D_SetScissorRect(svga->swc, &rect); |
| } |
| |
| |
| struct svga_tracked_state svga_hw_scissor = |
| { |
| "hw scissor state", |
| SVGA_NEW_SCISSOR, |
| emit_scissor_rect |
| }; |
| |
| |
| /*********************************************************************** |
| * Userclip state |
| */ |
| |
| static enum pipe_error |
| emit_clip_planes( struct svga_context *svga, |
| unsigned dirty ) |
| { |
| unsigned i; |
| enum pipe_error ret; |
| |
| /* TODO: just emit directly from svga_set_clip_state()? |
| */ |
| for (i = 0; i < SVGA3D_MAX_CLIP_PLANES; i++) { |
| /* need to express the plane in D3D-style coordinate space. |
| * GL coords get converted to D3D coords with the matrix: |
| * [ 1 0 0 0 ] |
| * [ 0 -1 0 0 ] |
| * [ 0 0 2 0 ] |
| * [ 0 0 -1 1 ] |
| * Apply that matrix to our plane equation, and invert Y. |
| */ |
| float a = svga->curr.clip.ucp[i][0]; |
| float b = svga->curr.clip.ucp[i][1]; |
| float c = svga->curr.clip.ucp[i][2]; |
| float d = svga->curr.clip.ucp[i][3]; |
| float plane[4]; |
| |
| plane[0] = a; |
| plane[1] = b; |
| plane[2] = 2.0f * c; |
| plane[3] = d - c; |
| |
| ret = SVGA3D_SetClipPlane(svga->swc, i, plane); |
| if(ret != PIPE_OK) |
| return ret; |
| } |
| |
| return PIPE_OK; |
| } |
| |
| |
| struct svga_tracked_state svga_hw_clip_planes = |
| { |
| "hw viewport state", |
| SVGA_NEW_CLIP, |
| emit_clip_planes |
| }; |