/**************************************************************************
*
- * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2003 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* 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
+ * IN NO EVENT SHALL VMWARE 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 "draw/draw_private.h"
#include "lp_context.h"
#include "lp_screen.h"
+#include "lp_setup.h"
#include "lp_state.h"
-/**
- * Mark the current vertex layout as "invalid".
- * We'll validate the vertex layout later, when we start to actually
- * render a point or line or tri.
- */
-static void
-invalidate_vertex_layout(struct llvmpipe_context *llvmpipe)
-{
- llvmpipe->vertex_info.num_attribs = 0;
-}
-
/**
* The vertex info describes how to convert the post-transformed vertices
* (simple float[][4]) used by the 'draw' module into vertices for
* rasterization.
*
- * This function validates the vertex layout and returns a pointer to a
- * vertex_info object.
+ * This function validates the vertex layout.
*/
-struct vertex_info *
-llvmpipe_get_vertex_info(struct llvmpipe_context *llvmpipe)
+static void
+compute_vertex_info(struct llvmpipe_context *llvmpipe)
{
+ const struct tgsi_shader_info *fsInfo = &llvmpipe->fs->info.base;
struct vertex_info *vinfo = &llvmpipe->vertex_info;
+ int vs_index;
+ uint i;
- if (vinfo->num_attribs == 0) {
- /* compute vertex layout now */
- const struct lp_fragment_shader *lpfs = llvmpipe->fs;
- struct vertex_info *vinfo_vbuf = &llvmpipe->vertex_info_vbuf;
- const uint num = draw_current_shader_outputs(llvmpipe->draw);
- uint i;
+ draw_prepare_shader_outputs(llvmpipe->draw);
- /* Tell draw_vbuf to simply emit the whole post-xform vertex
- * as-is. No longer any need to try and emit draw vertex_header
- * info.
- */
- vinfo_vbuf->num_attribs = 0;
- for (i = 0; i < num; i++) {
- draw_emit_vertex_attr(vinfo_vbuf, EMIT_4F, INTERP_PERSPECTIVE, i);
- }
- draw_compute_vertex_size(vinfo_vbuf);
+ /*
+ * Those can't actually be 0 (because pos is always at 0).
+ * But use ints anyway to avoid confusion (in vs outputs, they
+ * can very well be at pos 0).
+ */
+ llvmpipe->color_slot[0] = -1;
+ llvmpipe->color_slot[1] = -1;
+ llvmpipe->bcolor_slot[0] = -1;
+ llvmpipe->bcolor_slot[1] = -1;
+ llvmpipe->viewport_index_slot = -1;
+ llvmpipe->layer_slot = -1;
+ llvmpipe->face_slot = -1;
+ llvmpipe->psize_slot = -1;
+
+ /*
+ * Match FS inputs against VS outputs, emitting the necessary
+ * attributes. Could cache these structs and look them up with a
+ * combination of fragment shader, vertex shader ids.
+ */
+
+ vinfo->num_attribs = 0;
+ vs_index = draw_find_shader_output(llvmpipe->draw,
+ TGSI_SEMANTIC_POSITION, 0);
+
+ draw_emit_vertex_attr(vinfo, EMIT_4F, vs_index);
+
+ for (i = 0; i < fsInfo->num_inputs; i++) {
/*
- * Loop over fragment shader inputs, searching for the matching output
- * from the vertex shader.
+ * Search for each input in current vs output:
*/
- vinfo->num_attribs = 0;
- for (i = 0; i < lpfs->info.num_inputs; i++) {
- int src;
- enum interp_mode interp;
-
- switch (lpfs->info.input_interpolate[i]) {
- case TGSI_INTERPOLATE_CONSTANT:
- interp = INTERP_CONSTANT;
- break;
- case TGSI_INTERPOLATE_LINEAR:
- interp = INTERP_LINEAR;
- break;
- case TGSI_INTERPOLATE_PERSPECTIVE:
- interp = INTERP_PERSPECTIVE;
- break;
- default:
- assert(0);
- interp = INTERP_LINEAR;
- }
-
- switch (lpfs->info.input_semantic_name[i]) {
- case TGSI_SEMANTIC_POSITION:
- interp = INTERP_POS;
- break;
-
- case TGSI_SEMANTIC_COLOR:
- if (llvmpipe->rasterizer->flatshade) {
- interp = INTERP_CONSTANT;
- }
- break;
- }
-
- /* this includes texcoords and varying vars */
- src = draw_find_shader_output(llvmpipe->draw,
- lpfs->info.input_semantic_name[i],
- lpfs->info.input_semantic_index[i]);
- draw_emit_vertex_attr(vinfo, EMIT_4F, interp, src);
- }
+ vs_index = draw_find_shader_output(llvmpipe->draw,
+ fsInfo->input_semantic_name[i],
+ fsInfo->input_semantic_index[i]);
- llvmpipe->psize_slot = draw_find_shader_output(llvmpipe->draw,
- TGSI_SEMANTIC_PSIZE, 0);
- if (llvmpipe->psize_slot > 0) {
- draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_CONSTANT,
- llvmpipe->psize_slot);
+ if (fsInfo->input_semantic_name[i] == TGSI_SEMANTIC_COLOR &&
+ fsInfo->input_semantic_index[i] < 2) {
+ int idx = fsInfo->input_semantic_index[i];
+ llvmpipe->color_slot[idx] = (int)vinfo->num_attribs;
}
- draw_compute_vertex_size(vinfo);
+ if (fsInfo->input_semantic_name[i] == TGSI_SEMANTIC_FACE) {
+ llvmpipe->face_slot = (int)vinfo->num_attribs;
+ draw_emit_vertex_attr(vinfo, EMIT_4F, vs_index);
+ /*
+ * For vp index and layer, if the fs requires them but the vs doesn't
+ * provide them, draw (vbuf) will give us the required 0 (slot -1).
+ * (This means in this case we'll also use those slots in setup, which
+ * isn't necessary but they'll contain the correct (0) value.)
+ */
+ } else if (fsInfo->input_semantic_name[i] ==
+ TGSI_SEMANTIC_VIEWPORT_INDEX) {
+ llvmpipe->viewport_index_slot = (int)vinfo->num_attribs;
+ draw_emit_vertex_attr(vinfo, EMIT_4F, vs_index);
+ } else if (fsInfo->input_semantic_name[i] == TGSI_SEMANTIC_LAYER) {
+ llvmpipe->layer_slot = (int)vinfo->num_attribs;
+ draw_emit_vertex_attr(vinfo, EMIT_4F, vs_index);
+ } else {
+ /*
+ * Note that we'd actually want to skip position (as we won't use
+ * the attribute in the fs) but can't. The reason is that we don't
+ * actually have an input/output map for setup (even though it looks
+ * like we do...). Could adjust for this though even without a map
+ * (in llvmpipe_create_fs_state()).
+ */
+ draw_emit_vertex_attr(vinfo, EMIT_4F, vs_index);
+ }
}
- return vinfo;
-}
-
-
-/**
- * Called from vbuf module.
- *
- * Note that there's actually two different vertex layouts in llvmpipe.
- *
- * The normal one is computed in llvmpipe_get_vertex_info() above and is
- * used by the point/line/tri "setup" code.
- *
- * The other one (this one) is only used by the vbuf module (which is
- * not normally used by default but used in testing). For the vbuf module,
- * we basically want to pass-through the draw module's vertex layout as-is.
- * When the llvmpipe vbuf code begins drawing, the normal vertex layout
- * will come into play again.
- */
-struct vertex_info *
-llvmpipe_get_vbuf_vertex_info(struct llvmpipe_context *llvmpipe)
-{
- (void) llvmpipe_get_vertex_info(llvmpipe);
- return &llvmpipe->vertex_info_vbuf;
-}
+ /* Figure out if we need bcolor as well.
+ */
+ for (i = 0; i < 2; i++) {
+ vs_index = draw_find_shader_output(llvmpipe->draw,
+ TGSI_SEMANTIC_BCOLOR, i);
+ if (vs_index >= 0) {
+ llvmpipe->bcolor_slot[i] = (int)vinfo->num_attribs;
+ draw_emit_vertex_attr(vinfo, EMIT_4F, vs_index);
+ }
+ }
-/**
- * Recompute cliprect from scissor bounds, scissor enable and surface size.
- */
-static void
-compute_cliprect(struct llvmpipe_context *lp)
-{
- /* LP_NEW_FRAMEBUFFER
+ /* Figure out if we need pointsize as well.
*/
- uint surfWidth = lp->framebuffer.width;
- uint surfHeight = lp->framebuffer.height;
+ vs_index = draw_find_shader_output(llvmpipe->draw,
+ TGSI_SEMANTIC_PSIZE, 0);
- /* LP_NEW_RASTERIZER
- */
- if (lp->rasterizer->scissor) {
+ if (vs_index >= 0) {
+ llvmpipe->psize_slot = (int)vinfo->num_attribs;
+ draw_emit_vertex_attr(vinfo, EMIT_4F, vs_index);
+ }
- /* LP_NEW_SCISSOR
- *
- * clip to scissor rect:
- */
- lp->cliprect.minx = MAX2(lp->scissor.minx, 0);
- lp->cliprect.miny = MAX2(lp->scissor.miny, 0);
- lp->cliprect.maxx = MIN2(lp->scissor.maxx, surfWidth);
- lp->cliprect.maxy = MIN2(lp->scissor.maxy, surfHeight);
+ /* Figure out if we need viewport index (if it wasn't already in fs input) */
+ if (llvmpipe->viewport_index_slot < 0) {
+ vs_index = draw_find_shader_output(llvmpipe->draw,
+ TGSI_SEMANTIC_VIEWPORT_INDEX,
+ 0);
+ if (vs_index >= 0) {
+ llvmpipe->viewport_index_slot =(int)vinfo->num_attribs;
+ draw_emit_vertex_attr(vinfo, EMIT_4F, vs_index);
+ }
}
- else {
- /* clip to surface bounds */
- lp->cliprect.minx = 0;
- lp->cliprect.miny = 0;
- lp->cliprect.maxx = surfWidth;
- lp->cliprect.maxy = surfHeight;
+
+ /* Figure out if we need layer (if it wasn't already in fs input) */
+ if (llvmpipe->layer_slot < 0) {
+ vs_index = draw_find_shader_output(llvmpipe->draw,
+ TGSI_SEMANTIC_LAYER,
+ 0);
+ if (vs_index >= 0) {
+ llvmpipe->layer_slot = (int)vinfo->num_attribs;
+ draw_emit_vertex_attr(vinfo, EMIT_4F, vs_index);
+ }
}
+
+ draw_compute_vertex_size(vinfo);
+ lp_setup_set_vertex_info(llvmpipe->setup, vinfo);
}
-/* Hopefully this will remain quite simple, otherwise need to pull in
+/**
+ * Handle state changes.
+ * Called just prior to drawing anything (pipe::draw_arrays(), etc).
+ *
+ * Hopefully this will remain quite simple, otherwise need to pull in
* something like the state tracker mechanism.
*/
void llvmpipe_update_derived( struct llvmpipe_context *llvmpipe )
*/
if (llvmpipe->tex_timestamp != lp_screen->timestamp) {
llvmpipe->tex_timestamp = lp_screen->timestamp;
- llvmpipe->dirty |= LP_NEW_TEXTURE;
- }
-
- if (llvmpipe->dirty & (LP_NEW_SAMPLER |
- LP_NEW_TEXTURE)) {
- /* TODO */
+ llvmpipe->dirty |= LP_NEW_SAMPLER_VIEW;
}
+ /* This needs LP_NEW_RASTERIZER because of draw_prepare_shader_outputs(). */
if (llvmpipe->dirty & (LP_NEW_RASTERIZER |
LP_NEW_FS |
+ LP_NEW_GS |
LP_NEW_VS))
- invalidate_vertex_layout( llvmpipe );
-
- if (llvmpipe->dirty & (LP_NEW_SCISSOR |
- LP_NEW_RASTERIZER |
- LP_NEW_FRAMEBUFFER))
- compute_cliprect(llvmpipe);
+ compute_vertex_info(llvmpipe);
if (llvmpipe->dirty & (LP_NEW_FS |
+ LP_NEW_FRAMEBUFFER |
LP_NEW_BLEND |
+ LP_NEW_SCISSOR |
LP_NEW_DEPTH_STENCIL_ALPHA |
+ LP_NEW_RASTERIZER |
LP_NEW_SAMPLER |
- LP_NEW_TEXTURE))
+ LP_NEW_SAMPLER_VIEW |
+ LP_NEW_OCCLUSION_QUERY))
llvmpipe_update_fs( llvmpipe );
+ if (llvmpipe->dirty & (LP_NEW_RASTERIZER)) {
+ boolean discard =
+ (llvmpipe->sample_mask & 1) == 0 ||
+ (llvmpipe->rasterizer ? llvmpipe->rasterizer->rasterizer_discard : FALSE);
+
+ lp_setup_set_rasterizer_discard(llvmpipe->setup, discard);
+ }
+
+ if (llvmpipe->dirty & (LP_NEW_FS |
+ LP_NEW_FRAMEBUFFER |
+ LP_NEW_RASTERIZER))
+ llvmpipe_update_setup( llvmpipe );
+
+ if (llvmpipe->dirty & LP_NEW_BLEND_COLOR)
+ lp_setup_set_blend_color(llvmpipe->setup,
+ &llvmpipe->blend_color);
+
+ if (llvmpipe->dirty & LP_NEW_SCISSOR)
+ lp_setup_set_scissors(llvmpipe->setup, llvmpipe->scissors);
+
+ if (llvmpipe->dirty & LP_NEW_DEPTH_STENCIL_ALPHA) {
+ lp_setup_set_alpha_ref_value(llvmpipe->setup,
+ llvmpipe->depth_stencil->alpha.ref_value);
+ lp_setup_set_stencil_ref_values(llvmpipe->setup,
+ llvmpipe->stencil_ref.ref_value);
+ }
+
+ if (llvmpipe->dirty & LP_NEW_FS_CONSTANTS)
+ lp_setup_set_fs_constants(llvmpipe->setup,
+ ARRAY_SIZE(llvmpipe->constants[PIPE_SHADER_FRAGMENT]),
+ llvmpipe->constants[PIPE_SHADER_FRAGMENT]);
+
+ if (llvmpipe->dirty & (LP_NEW_SAMPLER_VIEW))
+ lp_setup_set_fragment_sampler_views(llvmpipe->setup,
+ llvmpipe->num_sampler_views[PIPE_SHADER_FRAGMENT],
+ llvmpipe->sampler_views[PIPE_SHADER_FRAGMENT]);
+
+ if (llvmpipe->dirty & (LP_NEW_SAMPLER))
+ lp_setup_set_fragment_sampler_state(llvmpipe->setup,
+ llvmpipe->num_samplers[PIPE_SHADER_FRAGMENT],
+ llvmpipe->samplers[PIPE_SHADER_FRAGMENT]);
+
+ if (llvmpipe->dirty & LP_NEW_VIEWPORT) {
+ /*
+ * Update setup and fragment's view of the active viewport state.
+ *
+ * XXX TODO: It is possible to only loop over the active viewports
+ * instead of all viewports (PIPE_MAX_VIEWPORTS).
+ */
+ lp_setup_set_viewports(llvmpipe->setup,
+ PIPE_MAX_VIEWPORTS,
+ llvmpipe->viewports);
+ }
llvmpipe->dirty = 0;
}
+
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