From 7d4b7460b0e565d0574c00d1d40c426cfebc290d Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Wed, 29 Jul 2009 12:15:14 -0700
Subject: [PATCH] i915: Enable ARB_vertex_shader for both i915 and i830.

Since the TNL is all done in software anyway, it should be the same to
the user who's probably using ARB_vertex_program otherwise, but gives them
a nicer programming environment.
---
 src/mesa/drivers/dri/i915/intel_tris.c        |  2 +
 src/mesa/drivers/dri/intel/intel_extensions.c |  8 ++--
 src/mesa/drivers/dri/intel/intel_span.c       | 37 +++++++++++++++++++
 src/mesa/drivers/dri/intel/intel_span.h       |  2 +
 4 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/src/mesa/drivers/dri/i915/intel_tris.c b/src/mesa/drivers/dri/i915/intel_tris.c
index a905455342d..0641e6df9d7 100644
--- a/src/mesa/drivers/dri/i915/intel_tris.c
+++ b/src/mesa/drivers/dri/i915/intel_tris.c
@@ -1076,7 +1076,9 @@ intelRunPipeline(GLcontext * ctx)
       intel->NewGLState = 0;
    }
 
+   intel_map_vertex_shader_textures(ctx);
    _tnl_run_pipeline(ctx);
+   intel_unmap_vertex_shader_textures(ctx);
 
    _mesa_unlock_context_textures(ctx);
 }
diff --git a/src/mesa/drivers/dri/intel/intel_extensions.c b/src/mesa/drivers/dri/intel/intel_extensions.c
index 5431cf90a1b..f10eda7cc7a 100644
--- a/src/mesa/drivers/dri/intel/intel_extensions.c
+++ b/src/mesa/drivers/dri/intel/intel_extensions.c
@@ -80,6 +80,9 @@ static const struct dri_extension card_extensions[] = {
    { "GL_ARB_multitexture",               NULL },
    { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
    { "GL_ARB_point_sprite",               NULL },
+   { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions },
+   { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions },
+   { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions },
    { "GL_ARB_sync",                       GL_ARB_sync_functions },
    { "GL_ARB_texture_border_clamp",       NULL },
    { "GL_ARB_texture_cube_map",           NULL },
@@ -91,6 +94,7 @@ static const struct dri_extension card_extensions[] = {
    { "GL_ARB_texture_rectangle",          NULL },
    { "GL_ARB_vertex_array_object",        GL_ARB_vertex_array_object_functions},
    { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions },
+   { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions },
    { "GL_ARB_window_pos",                 GL_ARB_window_pos_functions },
    { "GL_EXT_blend_color",                GL_EXT_blend_color_functions },
    { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
@@ -150,13 +154,9 @@ static const struct dri_extension brw_extensions[] = {
    { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions },
    { "GL_ARB_point_sprite", 		  NULL },
    { "GL_ARB_seamless_cube_map",          NULL },
-   { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions },
-   { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions },
-   { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions },
    { "GL_ARB_shadow",                     NULL },
    { "GL_MESA_texture_signed_rgba",       NULL },
    { "GL_ARB_texture_non_power_of_two",   NULL },
-   { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions },
    { "GL_EXT_shadow_funcs",               NULL },
    { "GL_EXT_stencil_two_side",           GL_EXT_stencil_two_side_functions },
    { "GL_EXT_texture_sRGB",		  NULL },
diff --git a/src/mesa/drivers/dri/intel/intel_span.c b/src/mesa/drivers/dri/intel/intel_span.c
index 28eabbc0054..dcfcad1d952 100644
--- a/src/mesa/drivers/dri/intel/intel_span.c
+++ b/src/mesa/drivers/dri/intel/intel_span.c
@@ -558,6 +558,43 @@ intelInitSpanFuncs(GLcontext * ctx)
    swdd->SpanRenderFinish = intelSpanRenderFinish;
 }
 
+void
+intel_map_vertex_shader_textures(GLcontext *ctx)
+{
+   struct intel_context *intel = intel_context(ctx);
+   int i;
+
+   if (ctx->VertexProgram._Current == NULL)
+      return;
+
+   for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
+      if (ctx->Texture.Unit[i]._ReallyEnabled &&
+	  ctx->VertexProgram._Current->Base.TexturesUsed[i] != 0) {
+         struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
+
+         intel_tex_map_images(intel, intel_texture_object(texObj));
+      }
+   }
+}
+
+void
+intel_unmap_vertex_shader_textures(GLcontext *ctx)
+{
+   struct intel_context *intel = intel_context(ctx);
+   int i;
+
+   if (ctx->VertexProgram._Current == NULL)
+      return;
+
+   for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
+      if (ctx->Texture.Unit[i]._ReallyEnabled &&
+	  ctx->VertexProgram._Current->Base.TexturesUsed[i] != 0) {
+         struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
+
+         intel_tex_unmap_images(intel, intel_texture_object(texObj));
+      }
+   }
+}
 
 /**
  * Plug in appropriate span read/write functions for the given renderbuffer.
diff --git a/src/mesa/drivers/dri/intel/intel_span.h b/src/mesa/drivers/dri/intel/intel_span.h
index acbeb4abe1c..bffe109aa5b 100644
--- a/src/mesa/drivers/dri/intel/intel_span.h
+++ b/src/mesa/drivers/dri/intel/intel_span.h
@@ -36,5 +36,7 @@ void intel_renderbuffer_map(struct intel_context *intel,
 			    struct gl_renderbuffer *rb);
 void intel_renderbuffer_unmap(struct intel_context *intel,
 			      struct gl_renderbuffer *rb);
+void intel_map_vertex_shader_textures(GLcontext *ctx);
+void intel_unmap_vertex_shader_textures(GLcontext *ctx);
 
 #endif
-- 
2.30.2