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-rw-r--r--src/gallium/drivers/i915simple/i915_context.c320
1 files changed, 320 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915simple/i915_context.c b/src/gallium/drivers/i915simple/i915_context.c
new file mode 100644
index 00000000000..7f71f8fd4f5
--- /dev/null
+++ b/src/gallium/drivers/i915simple/i915_context.c
@@ -0,0 +1,320 @@
+/**************************************************************************
+ *
+ * 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 "i915_context.h"
+#include "i915_winsys.h"
+#include "i915_state.h"
+#include "i915_batch.h"
+#include "i915_texture.h"
+#include "i915_reg.h"
+
+#include "draw/draw_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_winsys.h"
+#include "pipe/p_util.h"
+
+
+/**
+ * Query format support for creating a texture, drawing surface, etc.
+ * \param format the format to test
+ * \param type one of PIPE_TEXTURE, PIPE_SURFACE
+ */
+static boolean
+i915_is_format_supported( struct pipe_context *pipe,
+ enum pipe_format format, uint type )
+{
+ static const enum pipe_format tex_supported[] = {
+ PIPE_FORMAT_R8G8B8A8_UNORM,
+ PIPE_FORMAT_A8R8G8B8_UNORM,
+ PIPE_FORMAT_R5G6B5_UNORM,
+ PIPE_FORMAT_U_L8,
+ PIPE_FORMAT_U_A8,
+ PIPE_FORMAT_U_I8,
+ PIPE_FORMAT_U_A8_L8,
+ PIPE_FORMAT_YCBCR,
+ PIPE_FORMAT_YCBCR_REV,
+ PIPE_FORMAT_S8Z24_UNORM,
+ PIPE_FORMAT_NONE /* list terminator */
+ };
+ static const enum pipe_format surface_supported[] = {
+ PIPE_FORMAT_A8R8G8B8_UNORM,
+ PIPE_FORMAT_R5G6B5_UNORM,
+ PIPE_FORMAT_S8Z24_UNORM,
+ /*PIPE_FORMAT_R16G16B16A16_SNORM,*/
+ PIPE_FORMAT_NONE /* list terminator */
+ };
+ const enum pipe_format *list;
+ uint i;
+
+ switch (type) {
+ case PIPE_TEXTURE:
+ list = tex_supported;
+ break;
+ case PIPE_SURFACE:
+ list = surface_supported;
+ break;
+ default:
+ assert(0);
+ }
+
+ for (i = 0; list[i] != PIPE_FORMAT_NONE; i++) {
+ if (list[i] == format)
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+
+static int
+i915_get_param(struct pipe_context *pipe, int param)
+{
+ switch (param) {
+ case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
+ return 8;
+ case PIPE_CAP_NPOT_TEXTURES:
+ return 1;
+ case PIPE_CAP_TWO_SIDED_STENCIL:
+ return 1;
+ case PIPE_CAP_GLSL:
+ return 0;
+ case PIPE_CAP_S3TC:
+ return 0;
+ case PIPE_CAP_ANISOTROPIC_FILTER:
+ return 0;
+ case PIPE_CAP_POINT_SPRITE:
+ return 0;
+ case PIPE_CAP_MAX_RENDER_TARGETS:
+ return 1;
+ case PIPE_CAP_OCCLUSION_QUERY:
+ return 0;
+ case PIPE_CAP_TEXTURE_SHADOW_MAP:
+ return 1;
+ case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
+ return 11; /* max 1024x1024 */
+ case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
+ return 8; /* max 128x128x128 */
+ case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
+ return 11; /* max 1024x1024 */
+ default:
+ return 0;
+ }
+}
+
+
+static float
+i915_get_paramf(struct pipe_context *pipe, int param)
+{
+ switch (param) {
+ case PIPE_CAP_MAX_LINE_WIDTH:
+ /* fall-through */
+ case PIPE_CAP_MAX_LINE_WIDTH_AA:
+ return 7.5;
+
+ case PIPE_CAP_MAX_POINT_WIDTH:
+ /* fall-through */
+ case PIPE_CAP_MAX_POINT_WIDTH_AA:
+ return 255.0;
+
+ case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
+ return 4.0;
+
+ case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
+ return 16.0;
+
+ default:
+ return 0;
+ }
+}
+
+
+static void i915_destroy( struct pipe_context *pipe )
+{
+ struct i915_context *i915 = i915_context( pipe );
+
+ draw_destroy( i915->draw );
+
+ FREE( i915 );
+}
+
+
+
+
+static boolean
+i915_draw_elements( struct pipe_context *pipe,
+ struct pipe_buffer *indexBuffer,
+ unsigned indexSize,
+ unsigned prim, unsigned start, unsigned count)
+{
+ struct i915_context *i915 = i915_context( pipe );
+ struct draw_context *draw = i915->draw;
+ unsigned i;
+
+ if (i915->dirty)
+ i915_update_derived( i915 );
+
+ /*
+ * Map vertex buffers
+ */
+ for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
+ if (i915->vertex_buffer[i].buffer) {
+ void *buf
+ = pipe->winsys->buffer_map(pipe->winsys,
+ i915->vertex_buffer[i].buffer,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ draw_set_mapped_vertex_buffer(draw, i, buf);
+ }
+ }
+ /* Map index buffer, if present */
+ if (indexBuffer) {
+ void *mapped_indexes
+ = pipe->winsys->buffer_map(pipe->winsys, indexBuffer,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
+ }
+ else {
+ /* no index/element buffer */
+ draw_set_mapped_element_buffer(draw, 0, NULL);
+ }
+
+
+ draw_set_mapped_constant_buffer(draw,
+ i915->current.constants[PIPE_SHADER_VERTEX]);
+
+ /* draw! */
+ draw_arrays(i915->draw, prim, start, count);
+
+ /*
+ * unmap vertex/index buffers
+ */
+ for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
+ if (i915->vertex_buffer[i].buffer) {
+ pipe->winsys->buffer_unmap(pipe->winsys, i915->vertex_buffer[i].buffer);
+ draw_set_mapped_vertex_buffer(draw, i, NULL);
+ }
+ }
+ if (indexBuffer) {
+ pipe->winsys->buffer_unmap(pipe->winsys, indexBuffer);
+ draw_set_mapped_element_buffer(draw, 0, NULL);
+ }
+
+ return TRUE;
+}
+
+
+static boolean i915_draw_arrays( struct pipe_context *pipe,
+ unsigned prim, unsigned start, unsigned count)
+{
+ return i915_draw_elements(pipe, NULL, 0, prim, start, count);
+}
+
+
+
+struct pipe_context *i915_create( struct pipe_winsys *pipe_winsys,
+ struct i915_winsys *i915_winsys,
+ unsigned pci_id )
+{
+ struct i915_context *i915;
+ unsigned is_i945 = 0;
+
+ switch (pci_id) {
+ case PCI_CHIP_I915_G:
+ case PCI_CHIP_I915_GM:
+ break;
+
+ case PCI_CHIP_I945_G:
+ case PCI_CHIP_I945_GM:
+ case PCI_CHIP_I945_GME:
+ case PCI_CHIP_G33_G:
+ case PCI_CHIP_Q33_G:
+ case PCI_CHIP_Q35_G:
+ is_i945 = 1;
+ break;
+
+ default:
+ pipe_winsys->printf(pipe_winsys,
+ "%s: unknown pci id 0x%x, cannot create context\n",
+ __FUNCTION__, pci_id);
+ return NULL;
+ }
+
+ i915 = CALLOC_STRUCT(i915_context);
+ if (i915 == NULL)
+ return NULL;
+
+ i915->winsys = i915_winsys;
+ i915->pipe.winsys = pipe_winsys;
+
+ i915->pipe.destroy = i915_destroy;
+ i915->pipe.is_format_supported = i915_is_format_supported;
+ i915->pipe.get_param = i915_get_param;
+ i915->pipe.get_paramf = i915_get_paramf;
+
+ i915->pipe.clear = i915_clear;
+
+
+ i915->pipe.draw_arrays = i915_draw_arrays;
+ i915->pipe.draw_elements = i915_draw_elements;
+
+ /*
+ * Create drawing context and plug our rendering stage into it.
+ */
+ i915->draw = draw_create();
+ assert(i915->draw);
+ if (GETENV("I915_VBUF")) {
+ draw_set_rasterize_stage(i915->draw, i915_draw_vbuf_stage(i915));
+ }
+ else {
+ draw_set_rasterize_stage(i915->draw, i915_draw_render_stage(i915));
+ }
+
+ i915_init_surface_functions(i915);
+ i915_init_state_functions(i915);
+ i915_init_flush_functions(i915);
+ i915_init_string_functions(i915);
+
+ i915->pci_id = pci_id;
+ i915->flags.is_i945 = is_i945;
+
+ i915->pipe.texture_create = i915_texture_create;
+ i915->pipe.texture_release = i915_texture_release;
+
+ i915->dirty = ~0;
+ i915->hardware_dirty = ~0;
+
+ /* Batch stream debugging is a bit hacked up at the moment:
+ */
+ i915->batch_start = NULL;
+
+ /*
+ * XXX we could plug GL selection/feedback into the drawing pipeline
+ * by specifying a different setup/render stage.
+ */
+
+ return &i915->pipe;
+}
+
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