1 files changed, 142 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_context.c b/src/gallium/drivers/r300/r300_context.c
new file mode 100644
index 0000000000..37dc9e86d6
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_context.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
+ *
+ * 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
+ * on 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
+ * THE AUTHOR(S) AND/OR THEIR 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 "r300_context.h"
+
+static boolean r300_draw_range_elements(struct pipe_context* pipe,
+                                        struct pipe_buffer* indexBuffer,
+                                        unsigned indexSize,
+                                        unsigned minIndex,
+                                        unsigned maxIndex,
+                                        unsigned mode,
+                                        unsigned start,
+                                        unsigned count)
+{
+    struct r300_context* r300 = r300_context(pipe);
+    int i;
+
+    if (r300->dirty_state) {
+        r300_update_derived_state(r300);
+        r300_emit_dirty_state(r300);
+    }
+
+    for (i = 0; i < r300->vertex_buffer_count; i++) {
+        void* buf = pipe_buffer_map(pipe->screen,
+                                    r300->vertex_buffers[i].buffer,
+                                    PIPE_BUFFER_USAGE_CPU_READ);
+        draw_set_mapped_vertex_buffer(r300->draw, i, buf);
+    }
+
+    if (indexBuffer) {
+        void* indices = pipe_buffer_map(pipe->screen, indexBuffer,
+                                        PIPE_BUFFER_USAGE_CPU_READ);
+        draw_set_mapped_element_buffer_range(r300->draw, indexSize,
+                                             minIndex, maxIndex, indices);
+    } else {
+        draw_set_mapped_element_buffer(r300->draw, 0, NULL);
+    }
+
+    draw_set_mapped_constant_buffer(r300->draw,
+            r300->shader_constants[PIPE_SHADER_VERTEX].constants,
+            r300->shader_constants[PIPE_SHADER_VERTEX].user_count *
+                (sizeof(float) * 4));
+
+    /* Abandon all hope, ye who enter here. */
+    draw_arrays(r300->draw, mode, start, count);
+
+    for (i = 0; i < r300->vertex_buffer_count; i++) {
+        pipe_buffer_unmap(pipe->screen, r300->vertex_buffers[i].buffer);
+        draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
+    }
+
+    if (indexBuffer) {
+        pipe_buffer_unmap(pipe->screen, indexBuffer);
+        draw_set_mapped_element_buffer_range(r300->draw, 0, start,
+                                             start + count - 1, NULL);
+    }
+
+    return true;
+}
+
+static boolean r300_draw_elements(struct pipe_context* pipe,
+                                  struct pipe_buffer* indexBuffer,
+                                  unsigned indexSize, unsigned mode,
+                                  unsigned start, unsigned count)
+{
+    return r300_draw_range_elements(pipe, indexBuffer, indexSize, 0, ~0,
+                                    mode, start, count);
+}
+
+static boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
+                                unsigned start, unsigned count)
+{
+    return r300_draw_elements(pipe, NULL, 0, mode, start, count);
+}
+
+static void r300_destroy_context(struct pipe_context* context) {
+    struct r300_context* r300 = r300_context(context);
+
+    draw_destroy(r300->draw);
+
+    FREE(r300->blend_color_state);
+    FREE(r300->scissor_state);
+    FREE(r300);
+}
+
+struct pipe_context* r300_create_context(struct pipe_screen* screen,
+                                         struct pipe_winsys* winsys,
+                                         struct r300_winsys* r300_winsys)
+{
+    struct r300_context* r300 = CALLOC_STRUCT(r300_context);
+
+    if (!r300)
+        return NULL;
+
+    r300->winsys = r300_winsys;
+    r300->context.winsys = winsys;
+    r300->context.screen = r300_create_screen(winsys, r300_winsys);
+
+    r300->context.destroy = r300_destroy_context;
+
+    r300->context.clear = r300_clear;
+
+    r300->context.draw_arrays = r300_draw_arrays;
+    r300->context.draw_elements = r300_draw_elements;
+    r300->context.draw_range_elements = r300_draw_range_elements;
+
+    r300->draw = draw_create();
+    draw_set_rasterize_stage(r300->draw, r300_draw_swtcl_stage(r300));
+
+    r300->blend_color_state = CALLOC_STRUCT(r300_blend_color_state);
+    r300->scissor_state = CALLOC_STRUCT(r300_scissor_state);
+
+    r300_init_flush_functions(r300);
+
+    r300_init_surface_functions(r300);
+
+    r300_init_state_functions(r300);
+
+    r300->dirty_state = R300_NEW_KITCHEN_SINK;
+    r300->dirty_hw++;
+
+    return &r300->context;
+}