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Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_exec_array.c')
-rw-r--r--src/mesa/drivers/dri/i965/brw_exec_array.c340
1 files changed, 340 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_exec_array.c b/src/mesa/drivers/dri/i965/brw_exec_array.c
new file mode 100644
index 0000000000..95ed7704f6
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/brw_exec_array.c
@@ -0,0 +1,340 @@
+/**************************************************************************
+ *
+ * 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 "glheader.h"
+#include "context.h"
+#include "state.h"
+#include "api_validate.h"
+#include "api_noop.h"
+#include "dispatch.h"
+
+#include "brw_attrib.h"
+#include "brw_draw.h"
+#include "brw_exec.h"
+#include "brw_fallback.h"
+
+static GLboolean enabled( const struct gl_client_array *array )
+{
+ return array && array->Enabled;
+}
+
+static void merge_enabled_arrays( const struct gl_client_array *inputs[],
+ const struct gl_client_array *arrays[],
+ GLuint nr )
+{
+ GLuint i;
+ for (i = 0; i < nr; i++)
+ if (!enabled(inputs[i]) && enabled(arrays[i]))
+ inputs[i] = arrays[i];
+}
+
+
+/* _NEW_PROGRAM, _NEW_CLIENT */
+static void recalculate_inputs( struct brw_exec_context *exec )
+{
+ if (exec->ctx->VertexProgram._Enabled) {
+ memcpy( exec->array.inputs,
+ exec->array.attrib_arrays,
+ sizeof(exec->array.inputs) );
+
+ merge_enabled_arrays( exec->array.inputs,
+ exec->array.legacy_arrays,
+ BRW_ATTRIB_MAX );
+ }
+ else {
+ memcpy( exec->array.inputs,
+ exec->array.legacy_arrays,
+ sizeof(exec->array.inputs) );
+ }
+
+ exec->array.recalculate_inputs = 0;
+}
+
+
+static GLuint get_max_index( GLuint count, GLuint type,
+ const GLvoid *indices )
+{
+ GLint i;
+
+ /* Compute max element. This is only needed for upload of non-VBO,
+ * non-constant data elements.
+ *
+ * XXX: Postpone this calculation until it is known that it is
+ * needed. Otherwise could scan this pointlessly in the all-vbo
+ * case.
+ */
+ switch(type) {
+ case GL_UNSIGNED_INT: {
+ const GLuint *ui_indices = (const GLuint *)indices;
+ GLuint max_ui = 0;
+ for (i = 0; i < count; i++)
+ if (ui_indices[i] > max_ui)
+ max_ui = ui_indices[i];
+ return max_ui;
+ }
+ case GL_UNSIGNED_SHORT: {
+ const GLushort *us_indices = (const GLushort *)indices;
+ GLuint max_us = 0;
+ for (i = 0; i < count; i++)
+ if (us_indices[i] > max_us)
+ max_us = us_indices[i];
+ return max_us;
+ }
+ case GL_UNSIGNED_BYTE: {
+ const GLubyte *ub_indices = (const GLubyte *)indices;
+ GLuint max_ub = 0;
+ for (i = 0; i < count; i++)
+ if (ub_indices[i] > max_ub)
+ max_ub = ub_indices[i];
+ return max_ub;
+ }
+ default:
+ return 0;
+ }
+}
+
+
+
+
+/***********************************************************************
+ * API functions.
+ */
+
+static void GLAPIENTRY
+brw_exec_DrawArrays(GLenum mode, GLint start, GLsizei count)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct brw_exec_context *exec = IMM_CONTEXT(ctx)->exec;
+ struct brw_draw_prim prim[1];
+ GLboolean ok;
+
+ if (!_mesa_validate_DrawArrays( ctx, mode, start, count ))
+ return;
+
+ FLUSH_CURRENT( ctx, 0 );
+
+ if (ctx->NewState)
+ _mesa_update_state( ctx );
+
+ /* Bind all inputs, derive varying and size information:
+ */
+ if (exec->array.recalculate_inputs)
+ recalculate_inputs( exec );
+
+ prim[0].begin = 1;
+ prim[0].end = 1;
+ prim[0].weak = 0;
+ prim[0].pad = 0;
+
+ if (exec->array.inputs[0]->BufferObj->Name) {
+ /* Use vertex attribute as a hint to tell us if we expect all
+ * arrays to be in VBO's and if so, don't worry about avoiding
+ * the upload of elements < start.
+ */
+ prim[0].mode = mode;
+ prim[0].start = start;
+ prim[0].count = count;
+ prim[0].indexed = 0;
+
+ ok = brw_draw_prims( ctx, exec->array.inputs, prim, 1, NULL, 0, start + count, 0 );
+ }
+ else {
+ /* If not using VBO's, we don't want to upload any more elements
+ * than necessary from the arrays as they will not be valid next
+ * time the application tries to draw with them.
+ */
+ prim[0].mode = mode;
+ prim[0].start = 0;
+ prim[0].count = count;
+ prim[0].indexed = 0;
+
+ ok = brw_draw_prims( ctx, exec->array.inputs, prim, 1, NULL, start, start + count, 0 );
+ }
+
+ if (!ok) {
+ brw_fallback(ctx);
+ CALL_DrawArrays(ctx->Exec, ( mode, start, count ));
+ brw_unfallback(ctx);
+ }
+}
+
+
+
+static void GLAPIENTRY
+brw_exec_DrawRangeElements(GLenum mode,
+ GLuint start, GLuint end,
+ GLsizei count, GLenum type, const GLvoid *indices)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct brw_exec_context *exec = IMM_CONTEXT(ctx)->exec;
+ struct brw_draw_index_buffer ib;
+ struct brw_draw_prim prim[1];
+
+ if (!_mesa_validate_DrawRangeElements( ctx, mode, start, end, count, type, indices ))
+ return;
+
+ FLUSH_CURRENT( ctx, 0 );
+
+ if (ctx->NewState)
+ _mesa_update_state( ctx );
+
+ if (exec->array.recalculate_inputs)
+ recalculate_inputs( exec );
+
+ ib.count = count;
+ ib.type = type;
+ ib.obj = ctx->Array.ElementArrayBufferObj;
+ ib.ptr = indices;
+
+ if (ctx->Array.ElementArrayBufferObj->Name) {
+ /* Use the fact that indices are in a VBO as a hint that the
+ * program has put all the arrays in VBO's and we don't have to
+ * worry about performance implications of start > 0.
+ *
+ * XXX: consider passing start as min_index to draw_prims instead.
+ */
+ ib.rebase = 0;
+ }
+ else {
+ ib.rebase = start;
+ }
+
+ prim[0].begin = 1;
+ prim[0].end = 1;
+ prim[0].weak = 0;
+ prim[0].pad = 0;
+ prim[0].mode = mode;
+ prim[0].start = 0;
+ prim[0].count = count;
+ prim[0].indexed = 1;
+
+ if (!brw_draw_prims( ctx, exec->array.inputs, prim, 1, &ib, ib.rebase, end+1, 0 )) {
+ brw_fallback(ctx);
+ CALL_DrawRangeElements(ctx->Exec, (mode, start, end, count, type, indices));
+ brw_unfallback(ctx);
+ }
+}
+
+
+static void GLAPIENTRY
+brw_exec_DrawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLuint max_index;
+
+ if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices ))
+ return;
+
+ if (ctx->Array.ElementArrayBufferObj->Name) {
+ const GLvoid *map = ctx->Driver.MapBuffer(ctx,
+ GL_ELEMENT_ARRAY_BUFFER_ARB,
+ GL_DYNAMIC_READ_ARB,
+ ctx->Array.ElementArrayBufferObj);
+
+ max_index = get_max_index(count, type, ADD_POINTERS(map, indices));
+
+ ctx->Driver.UnmapBuffer(ctx,
+ GL_ELEMENT_ARRAY_BUFFER_ARB,
+ ctx->Array.ElementArrayBufferObj);
+ }
+ else {
+ max_index = get_max_index(count, type, indices);
+ }
+
+ brw_exec_DrawRangeElements(mode, 0, max_index, count, type, indices);
+}
+
+
+/***********************************************************************
+ * Initialization
+ */
+
+
+static void init_legacy_arrays( GLcontext *ctx,
+ const struct gl_client_array *arrays[] )
+{
+ struct gl_array_object *obj = ctx->Array.ArrayObj;
+ GLuint i;
+
+ memset(arrays, 0, sizeof(*arrays) * BRW_ATTRIB_MAX);
+
+ arrays[BRW_ATTRIB_POS] = &obj->Vertex;
+ arrays[BRW_ATTRIB_NORMAL] = &obj->Normal;
+ arrays[BRW_ATTRIB_COLOR0] = &obj->Color;
+ arrays[BRW_ATTRIB_COLOR1] = &obj->SecondaryColor;
+ arrays[BRW_ATTRIB_FOG] = &obj->FogCoord;
+
+ for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
+ arrays[BRW_ATTRIB_TEX0 + i] = &obj->TexCoord[i];
+
+ arrays[BRW_ATTRIB_INDEX] = &obj->Index;
+ arrays[BRW_ATTRIB_EDGEFLAG] = &obj->EdgeFlag;
+}
+
+
+static void init_attrib_arrays( GLcontext *ctx,
+ const struct gl_client_array *arrays[] )
+{
+ struct gl_array_object *obj = ctx->Array.ArrayObj;
+ GLuint i;
+
+ for (i = 0; i < BRW_ATTRIB_FIRST_MATERIAL; i++)
+ arrays[i] = &obj->VertexAttrib[i];
+}
+
+
+
+
+void brw_exec_array_init( struct brw_exec_context *exec )
+{
+ GLcontext *ctx = exec->ctx;
+
+ init_legacy_arrays(ctx, exec->array.legacy_arrays);
+ init_attrib_arrays(ctx, exec->array.attrib_arrays);
+
+#if 1
+ exec->vtxfmt.DrawArrays = brw_exec_DrawArrays;
+ exec->vtxfmt.DrawElements = brw_exec_DrawElements;
+ exec->vtxfmt.DrawRangeElements = brw_exec_DrawRangeElements;
+#else
+ exec->vtxfmt.DrawArrays = _mesa_noop_DrawArrays;
+ exec->vtxfmt.DrawElements = _mesa_noop_DrawElements;
+ exec->vtxfmt.DrawRangeElements = _mesa_noop_DrawRangeElements;
+#endif
+
+ exec->array.recalculate_inputs = 1;
+
+ exec->array.index_obj = ctx->Driver.NewBufferObject(ctx, 1, GL_ARRAY_BUFFER_ARB);
+}
+
+
+void brw_exec_array_destroy( struct brw_exec_context *exec )
+{
+ GLcontext *ctx = exec->ctx;
+
+ ctx->Driver.DeleteBuffer(ctx, exec->array.index_obj);
+}
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