diff options
Diffstat (limited to 'src/mesa/drivers/dri/unichrome/via_dmatmp.h')
| -rw-r--r-- | src/mesa/drivers/dri/unichrome/via_dmatmp.h | 601 |
1 files changed, 601 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/unichrome/via_dmatmp.h b/src/mesa/drivers/dri/unichrome/via_dmatmp.h new file mode 100644 index 0000000000..458ccea213 --- /dev/null +++ b/src/mesa/drivers/dri/unichrome/via_dmatmp.h @@ -0,0 +1,601 @@ +/* + * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved. + * Copyright 2001-2003 S3 Graphics, 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, 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 + * VIA, S3 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. + */ + +/* Template for render stages which build and emit vertices directly + * to fixed-size dma buffers. Useful for rendering strips and other + * native primitives where clipping and per-vertex tweaks such as + * those in t_dd_tritmp.h are not required. + * + * Produces code for both inline triangles and indexed triangles. + * Where various primitive types are unaccelerated by hardware, the + * code attempts to fallback to other primitive types (quadstrips to + * tristrips, lineloops to linestrips), or to indexed vertices. + * Ultimately, a FALLBACK() macro is invoked if there is no way to + * render the primitive natively. + */ + +#if !defined(HAVE_TRIANGLES) +#error "must have at least triangles to use render template" +#endif + +#if !HAVE_ELTS +#define ELTS_VARS +#define ALLOC_ELTS(nr) +#define EMIT_ELT(offset, elt) +#define EMIT_TWO_ELTS(offset, elt0, elt1) +#define INCR_ELTS(nr) +#define ELT_INIT(prim) +#define GET_CURRENT_VB_MAX_ELTS() 0 +#define GET_SUBSEQUENT_VB_MAX_ELTS() 0 +#define ALLOC_ELTS_NEW_PRIMITIVE(nr) +#define RELEASE_ELT_VERTS() +#define EMIT_INDEXED_VERTS(ctx, start, count) +#endif + +#ifndef EMIT_TWO_ELTS +#define EMIT_TWO_ELTS(offset, elt0, elt1) \ + do { \ + EMIT_ELT(offset, elt0); \ + EMIT_ELT(offset + 1, elt1); \ + } while (0) +#endif + +#ifndef FINISH +#define FINISH +#endif + +/*********************************************************************** + * Render non-indexed primitives. + ***********************************************************************/ + +static void TAG(render_points_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s in\n", __FUNCTION__); +#endif + if (HAVE_POINTS) { + LOCAL_VARS; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz = GET_CURRENT_VB_MAX_VERTS(); + GLuint j, nr; + + INIT(GL_POINTS); + + if (currentsz < 8) + currentsz = dmasz; + + for (j = start; j < count; j += nr) { + nr = MIN2(currentsz, count - j); + EMIT_VERTS(ctx, j, nr); + currentsz = dmasz; + } + + FINISH; + } + else { + VERT_FALLBACK(ctx, start, count, flags); + } +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s out\n", __FUNCTION__); +#endif +} + +static void TAG(render_lines_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s in\n", __FUNCTION__); +#endif + if (HAVE_LINES) { + LOCAL_VARS; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz = GET_CURRENT_VB_MAX_VERTS(); + GLuint j, nr; + + INIT(GL_LINES); + + /* Emit whole number of lines in total and in each buffer: + */ + count -= (count - start) & 1; + currentsz -= currentsz & 1; + dmasz -= dmasz & 1; + + if (currentsz < 8) + currentsz = dmasz; + + for (j = start; j < count; j += nr) { + nr = MIN2(currentsz, count - j); + EMIT_VERTS(ctx, j, nr); + currentsz = dmasz; + } + + FINISH; + } + else { + VERT_FALLBACK(ctx, start, count, flags); + } +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s out\n", __FUNCTION__); +#endif +} + + +static void TAG(render_line_strip_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s in\n", __FUNCTION__); +#endif + if (HAVE_LINE_STRIPS) { + LOCAL_VARS; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz = GET_CURRENT_VB_MAX_VERTS(); + GLuint j, nr; + + INIT(GL_LINE_STRIP); + + if (currentsz < 8) + currentsz = dmasz; + + for (j = start; j + 1 < count; j += nr - 1) { + nr = MIN2(currentsz, count - j); + EMIT_VERTS(ctx, j, nr); + currentsz = dmasz; + } + + FINISH; + } + else { + VERT_FALLBACK(ctx, start, count, flags); + } +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s out\n", __FUNCTION__); +#endif +} + + +static void TAG(render_line_loop_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s in\n", __FUNCTION__); +#endif + if (HAVE_LINE_STRIPS) { + LOCAL_VARS; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz = GET_CURRENT_VB_MAX_VERTS(); + GLuint j, nr; + + INIT(GL_LINE_STRIP); + + if (flags & PRIM_BEGIN) + j = start; + else + j = start + 1; + + /* Ensure last vertex won't wrap buffers: + */ + currentsz--; + dmasz--; + + if (currentsz < 8) + currentsz = dmasz; + + for (; j + 1 < count; j += nr - 1) { + nr = MIN2(currentsz, count - j); + EMIT_VERTS(ctx, j, nr); + currentsz = dmasz; + } + + if (start < count - 1 && (flags & PRIM_END)) + EMIT_VERTS(ctx, start, 1); + + FINISH; + } + else { + VERT_FALLBACK(ctx, start, count, flags); + } +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s out\n", __FUNCTION__); +#endif +} + + +static void TAG(render_triangles_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ + LOCAL_VARS; + int dmasz = (GET_SUBSEQUENT_VB_MAX_VERTS() / 3) * 3; + int currentsz = (GET_CURRENT_VB_MAX_VERTS() / 3) * 3; + GLuint j, nr; +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s - in\n", __FUNCTION__); +#endif +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif + INIT(GL_TRIANGLES); + + /* Emit whole number of tris in total. dmasz is already a multiple + * of 3. + */ + count -= (count - start) % 3; + + if (currentsz < 8) + currentsz = dmasz; + + for (j = start; j < count; j += nr) { + nr = MIN2(currentsz, count - j); + EMIT_VERTS(ctx, j, nr); + currentsz = dmasz; + } + FINISH; +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s - out\n", __FUNCTION__); +#endif +} + + +static void TAG(render_tri_strip_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s in\n", __FUNCTION__); +#endif + if (HAVE_TRI_STRIPS) { + LOCAL_VARS; + GLuint j, nr; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz = GET_CURRENT_VB_MAX_VERTS(); + + INIT(GL_TRIANGLE_STRIP); + + if (currentsz < 8) { + NEW_BUFFER(); + currentsz = dmasz; + } + + if ((flags & PRIM_PARITY) && count - start > 2) { + EMIT_VERTS(ctx, start, 1); + currentsz--; + } + + /* From here on emit even numbers of tris when wrapping over buffers: + */ + dmasz -= (dmasz & 1); + currentsz -= (currentsz & 1); + + for (j = start; j + 2 < count; j += nr - 2) { + nr = MIN2(currentsz, count - j); + EMIT_VERTS(ctx, j, nr); + currentsz = dmasz; + } + + FINISH; + } + else { + VERT_FALLBACK(ctx, start, count, flags); + } +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s out\n", __FUNCTION__); +#endif +} + +static void TAG(render_tri_fan_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s - in\n", __FUNCTION__); +#endif +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif + if (HAVE_TRI_FANS) { + LOCAL_VARS; + GLuint j, nr; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz = GET_CURRENT_VB_MAX_VERTS(); + + INIT(GL_TRIANGLE_FAN); + + if (currentsz < 8) { + NEW_BUFFER(); + currentsz = dmasz; + } + + for (j = start + 1; j + 1 < count; j += nr - 1) { + nr = MIN2(currentsz, count - j + 1); + EMIT_VERTS(ctx, start, 1); + EMIT_VERTS(ctx, j, nr - 1); + currentsz = dmasz; + } + + FINISH; + } + else { + /* Could write code to emit these as indexed vertices (for the + * g400, for instance). + */ + VERT_FALLBACK(ctx, start, count, flags); + } +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s - out\n", __FUNCTION__); +#endif +} + + +static void TAG(render_poly_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s in\n", __FUNCTION__); +#endif + if (HAVE_POLYGONS) { + LOCAL_VARS; + GLuint j, nr; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz = GET_CURRENT_VB_MAX_VERTS(); + + INIT(GL_POLYGON); + + if (currentsz < 8) { + NEW_BUFFER(); + currentsz = dmasz; + } + + for (j = start + 1; j + 1 < count; j += nr - 1) { + nr = MIN2(currentsz, count - j + 1); + EMIT_VERTS(ctx, start, 1); + EMIT_VERTS(ctx, j, nr - 1); + currentsz = dmasz; + } + + FINISH; + } + else if (HAVE_TRI_FANS && !(ctx->_TriangleCaps & DD_FLATSHADE)) { + TAG(render_tri_fan_verts)(ctx, start, count, flags); + } + else { + VERT_FALLBACK(ctx, start, count, flags); + } +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s out\n", __FUNCTION__); +#endif +} + +static void TAG(render_quad_strip_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ + GLuint j, nr; +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s in\n", __FUNCTION__); +#endif + if (HAVE_QUAD_STRIPS) { + LOCAL_VARS; + GLuint j, nr; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz; + + INIT(GL_QUAD_STRIP); + + currentsz = GET_CURRENT_VB_MAX_VERTS(); + + if (currentsz < 8) { + NEW_BUFFER(); + currentsz = dmasz; + } + + dmasz -= (dmasz & 2); + currentsz -= (currentsz & 2); + + for (j = start; j + 3 < count; j += nr - 2) { + nr = MIN2(currentsz, count - j); + EMIT_VERTS(ctx, j, nr); + currentsz = dmasz; + } + + FINISH; + } + else if (HAVE_TRI_STRIPS) { + LOCAL_VARS; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz = GET_CURRENT_VB_MAX_VERTS(); + + /* Emit smooth-shaded quadstrips as tristrips: + */ + INIT(GL_TRIANGLE_STRIP); + + /* Emit whole number of quads in total, and in each buffer. + */ + dmasz -= dmasz & 1; + currentsz -= currentsz & 1; + count -= (count - start) & 1; + + if (currentsz < 8) { + NEW_BUFFER(); + currentsz = dmasz; + } + + for (j = start; j + 3 < count; j += nr - 2) { + nr = MIN2(currentsz, count - j); + EMIT_VERTS(ctx, j, nr); + currentsz = dmasz; + } + + FINISH; + } + else { + VERT_FALLBACK(ctx, start, count, flags); + } +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s out\n", __FUNCTION__); +#endif +} + + +static void TAG(render_quads_verts)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s - in\n", __FUNCTION__); +#endif +#ifdef PERFORMANCE_MEASURE + if (VIA_PERFORMANCE) P_M_X; +#endif + if (HAVE_QUADS) { + LOCAL_VARS; + int dmasz = (GET_SUBSEQUENT_VB_MAX_VERTS() / 4) * 4; + int currentsz = (GET_CURRENT_VB_MAX_VERTS() / 4) * 4; + GLuint j, nr; + + INIT(GL_QUADS); + + /* Emit whole number of quads in total. dmasz is already a multiple + * of 4. + */ + count -= (count - start) % 4; + + if (currentsz < 8) + currentsz = dmasz; + + for (j = start; j < count; j += nr) { + nr = MIN2(currentsz, count - j); + EMIT_VERTS(ctx, j, nr); + currentsz = dmasz; + } + FINISH; + } + else if (HAVE_TRIANGLES) { + /* Hardware doesn't have a quad primitive type -- try to + * simulate it using triangle primitive. + */ + LOCAL_VARS; + int dmasz = GET_SUBSEQUENT_VB_MAX_VERTS(); + int currentsz; + GLuint j; + + INIT(GL_TRIANGLES); + + currentsz = GET_CURRENT_VB_MAX_VERTS(); + + /* Emit whole number of quads in total, and in each buffer. + */ + dmasz -= dmasz & 3; + count -= (count - start) & 3; + currentsz -= currentsz & 3; + + /* Adjust for rendering as triangles: + */ + currentsz = currentsz / 6 * 4; + dmasz = dmasz / 6 * 4; + + if (currentsz < 8) + currentsz = dmasz; + + for (j = start; j < count; j += 4) { + /* Send v0, v1, v3 + */ + EMIT_VERTS(ctx, j, 2); + EMIT_VERTS(ctx, j + 3, 1); + /* Send v1, v2, v3 + */ + EMIT_VERTS(ctx, j + 1, 3); + } + FINISH; + } + else { + /* Vertices won't fit in a single buffer, fallback. + */ + VERT_FALLBACK(ctx, start, count, flags); + } +#ifdef DEBUG + if (VIA_DEBUG) fprintf(stderr, "%s - out\n", __FUNCTION__); +#endif +} + +static void TAG(render_noop)(GLcontext *ctx, + GLuint start, + GLuint count, + GLuint flags) +{ +} + + +static render_func TAG(render_tab_verts)[GL_POLYGON + 2] = +{ + TAG(render_points_verts), + TAG(render_lines_verts), + TAG(render_line_loop_verts), + TAG(render_line_strip_verts), + TAG(render_triangles_verts), + TAG(render_tri_strip_verts), + TAG(render_tri_fan_verts), + TAG(render_quads_verts), + TAG(render_quad_strip_verts), + TAG(render_poly_verts), + TAG(render_noop), +}; + |