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Diffstat (limited to 'src/mesa/drivers/dri/i915/intel_render.c')
-rw-r--r--src/mesa/drivers/dri/i915/intel_render.c280
1 files changed, 280 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_render.c b/src/mesa/drivers/dri/i915/intel_render.c
new file mode 100644
index 0000000000..ec209391ab
--- /dev/null
+++ b/src/mesa/drivers/dri/i915/intel_render.c
@@ -0,0 +1,280 @@
+/**************************************************************************
+ *
+ * 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.
+ *
+ **************************************************************************/
+
+/*
+ * Render unclipped vertex buffers by emitting vertices directly to
+ * dma buffers. Use strip/fan hardware acceleration where possible.
+ *
+ */
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/macros.h"
+#include "main/imports.h"
+#include "main/mtypes.h"
+#include "main/enums.h"
+
+#include "tnl/t_context.h"
+#include "tnl/t_vertex.h"
+#include "tnl/t_pipeline.h"
+
+#include "intel_screen.h"
+#include "intel_context.h"
+#include "intel_tris.h"
+#include "intel_batchbuffer.h"
+#include "intel_reg.h"
+
+/*
+ * Render unclipped vertex buffers by emitting vertices directly to
+ * dma buffers. Use strip/fan hardware primitives where possible.
+ * Try to simulate missing primitives with indexed vertices.
+ */
+#define HAVE_POINTS 0 /* Has it, but can't use because subpixel has to
+ * be adjusted for points on the INTEL/I845G
+ */
+#define HAVE_LINES 1
+#define HAVE_LINE_STRIPS 1
+#define HAVE_TRIANGLES 1
+#define HAVE_TRI_STRIPS 1
+#define HAVE_TRI_STRIP_1 0 /* has it, template can't use it yet */
+#define HAVE_TRI_FANS 1
+#define HAVE_POLYGONS 1
+#define HAVE_QUADS 0
+#define HAVE_QUAD_STRIPS 0
+
+#define HAVE_ELTS 0
+
+static uint32_t hw_prim[GL_POLYGON + 1] = {
+ 0,
+ PRIM3D_LINELIST,
+ PRIM3D_LINESTRIP,
+ PRIM3D_LINESTRIP,
+ PRIM3D_TRILIST,
+ PRIM3D_TRISTRIP,
+ PRIM3D_TRIFAN,
+ 0,
+ 0,
+ PRIM3D_POLY
+};
+
+static const GLenum reduced_prim[GL_POLYGON + 1] = {
+ GL_POINTS,
+ GL_LINES,
+ GL_LINES,
+ GL_LINES,
+ GL_TRIANGLES,
+ GL_TRIANGLES,
+ GL_TRIANGLES,
+ GL_TRIANGLES,
+ GL_TRIANGLES,
+ GL_TRIANGLES
+};
+
+static const int scale_prim[GL_POLYGON + 1] = {
+ 0, /* fallback case */
+ 1,
+ 2,
+ 2,
+ 1,
+ 3,
+ 3,
+ 0, /* fallback case */
+ 0, /* fallback case */
+ 3
+};
+
+
+static void
+intelDmaPrimitive(struct intel_context *intel, GLenum prim)
+{
+ if (0)
+ fprintf(stderr, "%s %s\n", __FUNCTION__, _mesa_lookup_enum_by_nr(prim));
+ INTEL_FIREVERTICES(intel);
+ intel->vtbl.reduced_primitive_state(intel, reduced_prim[prim]);
+ intel_set_prim(intel, hw_prim[prim]);
+}
+
+static INLINE GLuint intel_get_vb_max(struct intel_context *intel)
+{
+ GLuint ret;
+
+ if (intel->intelScreen->no_vbo)
+ ret = intel->batch->size - 1500;
+ else
+ ret = INTEL_VB_SIZE;
+ ret /= (intel->vertex_size * 4);
+ return ret;
+}
+
+static INLINE GLuint intel_get_current_max(struct intel_context *intel)
+{
+
+ if (intel->intelScreen->no_vbo)
+ return intel_get_vb_max(intel);
+ else
+ return (INTEL_VB_SIZE - intel->prim.current_offset) / (intel->vertex_size * 4);
+}
+
+#define LOCAL_VARS struct intel_context *intel = intel_context(ctx)
+#define INIT( prim ) \
+do { \
+ intelDmaPrimitive( intel, prim ); \
+} while (0)
+
+#define FLUSH() INTEL_FIREVERTICES(intel)
+
+#define GET_SUBSEQUENT_VB_MAX_VERTS() intel_get_vb_max(intel)
+#define GET_CURRENT_VB_MAX_VERTS() intel_get_current_max(intel)
+
+#define ALLOC_VERTS(nr) intel_get_prim_space(intel, nr)
+
+#define EMIT_VERTS( ctx, j, nr, buf ) \
+ _tnl_emit_vertices_to_buffer(ctx, j, (j)+(nr), buf )
+
+#define TAG(x) intel_##x
+#include "tnl_dd/t_dd_dmatmp.h"
+
+
+/**********************************************************************/
+/* Render pipeline stage */
+/**********************************************************************/
+
+/* Heuristic to choose between the two render paths:
+ */
+static GLboolean
+choose_render(struct intel_context *intel, struct vertex_buffer *VB)
+{
+ int vertsz = intel->vertex_size;
+ int cost_render = 0;
+ int cost_fallback = 0;
+ int nr_prims = 0;
+ int nr_rprims = 0;
+ int nr_rverts = 0;
+ int rprim = intel->reduced_primitive;
+ int i = 0;
+
+ for (i = 0; i < VB->PrimitiveCount; i++) {
+ GLuint prim = VB->Primitive[i].mode;
+ GLuint length = VB->Primitive[i].count;
+
+ if (!length)
+ continue;
+
+ nr_prims++;
+ nr_rverts += length * scale_prim[prim & PRIM_MODE_MASK];
+
+ if (reduced_prim[prim & PRIM_MODE_MASK] != rprim) {
+ nr_rprims++;
+ rprim = reduced_prim[prim & PRIM_MODE_MASK];
+ }
+ }
+
+ /* One point for each generated primitive:
+ */
+ cost_render = nr_prims;
+ cost_fallback = nr_rprims;
+
+ /* One point for every 1024 dwords (4k) of dma:
+ */
+ cost_render += (vertsz * i) / 1024;
+ cost_fallback += (vertsz * nr_rverts) / 1024;
+
+ if (0)
+ fprintf(stderr, "cost render: %d fallback: %d\n",
+ cost_render, cost_fallback);
+
+ if (cost_render > cost_fallback)
+ return GL_FALSE;
+
+ return GL_TRUE;
+}
+
+
+static GLboolean
+intel_run_render(GLcontext * ctx, struct tnl_pipeline_stage *stage)
+{
+ struct intel_context *intel = intel_context(ctx);
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ struct vertex_buffer *VB = &tnl->vb;
+ GLuint i;
+
+ intel->vtbl.render_prevalidate( intel );
+
+ /* Don't handle clipping or indexed vertices.
+ */
+ if (intel->RenderIndex != 0 ||
+ !intel_validate_render(ctx, VB) || !choose_render(intel, VB)) {
+ return GL_TRUE;
+ }
+
+ tnl->clipspace.new_inputs |= VERT_BIT_POS;
+
+ tnl->Driver.Render.Start(ctx);
+
+ for (i = 0; i < VB->PrimitiveCount; i++) {
+ GLuint prim = _tnl_translate_prim(&VB->Primitive[i]);
+ GLuint start = VB->Primitive[i].start;
+ GLuint length = VB->Primitive[i].count;
+
+ if (!length)
+ continue;
+
+ intel_render_tab_verts[prim & PRIM_MODE_MASK] (ctx, start,
+ start + length, prim);
+ }
+
+ tnl->Driver.Render.Finish(ctx);
+
+ INTEL_FIREVERTICES(intel);
+
+ return GL_FALSE; /* finished the pipe */
+}
+
+static const struct tnl_pipeline_stage _intel_render_stage = {
+ "intel render",
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ intel_run_render /* run */
+};
+
+const struct tnl_pipeline_stage *intel_pipeline[] = {
+ &_tnl_vertex_transform_stage,
+ &_tnl_vertex_cull_stage,
+ &_tnl_normal_transform_stage,
+ &_tnl_lighting_stage,
+ &_tnl_fog_coordinate_stage,
+ &_tnl_texgen_stage,
+ &_tnl_texture_transform_stage,
+ &_tnl_point_attenuation_stage,
+ &_tnl_vertex_program_stage,
+#if 1
+ &_intel_render_stage, /* ADD: unclipped rastersetup-to-dma */
+#endif
+ &_tnl_render_stage,
+ 0,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-08 20:13:53 +0000