[Mesa-dev] [PATCH 5/9] r300: Enable extensions by just setting the flags

Ian Romanick idr at freedesktop.org
Tue Sep 6 14:54:34 PDT 2011


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On 09/06/2011 02:45 PM, Corbin Simpson wrote:
> So much win! I have a couple nits; replying inline.
> 
> On Tue, Sep 6, 2011 at 1:13 PM, Ian Romanick <idr at freedesktop.org> wrote:
>> From: Ian Romanick <ian.d.romanick at intel.com>
>>
>> Core Mesa already does the dispatch offset remapping for every
>> function that could possibly ever be supported.  There's no need to
>> continue using that cruft in the driver.
>>
>> Since the call to _mesa_enable_imaging_extensions (via
>> driInitExtensions) is removed, EXT_blend_color and EXT_blend_logic_op
>> are explicitly added to the list.
>>
>> Cc: Alex Deucher <alexdeucher at gmail.com>
>> Cc: Dave Airlie <airlied at redhat.com>
>> ---
>>  src/mesa/drivers/dri/r300/r300_context.c |  162 ++++++++++++------------------
>>  1 files changed, 63 insertions(+), 99 deletions(-)
>>
>> diff --git a/src/mesa/drivers/dri/r300/r300_context.c b/src/mesa/drivers/dri/r300/r300_context.c
>> index 213d3c0..984aff5 100644
>> --- a/src/mesa/drivers/dri/r300/r300_context.c
>> +++ b/src/mesa/drivers/dri/r300/r300_context.c
>> @@ -35,6 +35,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
>>  * \author Nicolai Haehnle <prefect_ at gmx.net>
>>  */
>>
>> +#include <stdbool.h>
>>  #include "main/glheader.h"
>>  #include "main/api_arrayelt.h"
>>  #include "main/context.h"
>> @@ -71,91 +72,6 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
>>  #include "utils.h"
>>  #include "xmlpool.h"           /* for symbolic values of enum-type options */
>>
>> -#define need_GL_VERSION_2_0
>> -#define need_GL_ARB_occlusion_query
>> -#define need_GL_ARB_point_parameters
>> -#define need_GL_ARB_vertex_program
>> -#define need_GL_EXT_blend_equation_separate
>> -#define need_GL_EXT_blend_func_separate
>> -#define need_GL_EXT_blend_minmax
>> -#define need_GL_EXT_framebuffer_blit
>> -#define need_GL_EXT_framebuffer_object
>> -#define need_GL_EXT_fog_coord
>> -#define need_GL_EXT_gpu_program_parameters
>> -#define need_GL_EXT_provoking_vertex
>> -#define need_GL_EXT_secondary_color
>> -#define need_GL_EXT_stencil_two_side
>> -#define need_GL_ATI_separate_stencil
>> -#define need_GL_NV_vertex_program
>> -#define need_GL_OES_EGL_image
>> -
>> -#include "main/remap_helper.h"
>> -
>> -static const struct dri_extension card_extensions[] = {
>> -  /* *INDENT-OFF* */
>> -  {"GL_ARB_depth_texture",             NULL},
>> -  {"GL_ARB_fragment_program",          NULL},
>> -  {"GL_ARB_occlusion_query",           GL_ARB_occlusion_query_functions},
>> -  {"GL_ARB_multitexture",              NULL},
>> -  {"GL_ARB_point_parameters",          GL_ARB_point_parameters_functions},
>> -  {"GL_ARB_shadow",                    NULL},
>> -  {"GL_ARB_shadow_ambient",            NULL},
>> -  {"GL_ARB_texture_border_clamp",      NULL},
>> -  {"GL_ARB_texture_cube_map",          NULL},
>> -  {"GL_ARB_texture_env_add",           NULL},
>> -  {"GL_ARB_texture_env_combine",       NULL},
>> -  {"GL_ARB_texture_env_crossbar",      NULL},
>> -  {"GL_ARB_texture_env_dot3",          NULL},
>> -  {"GL_ARB_texture_mirrored_repeat",   NULL},
>> -  {"GL_ARB_vertex_program",            GL_ARB_vertex_program_functions},
>> -  {"GL_EXT_blend_equation_separate",   GL_EXT_blend_equation_separate_functions},
>> -  {"GL_EXT_blend_func_separate",       GL_EXT_blend_func_separate_functions},
>> -  {"GL_EXT_blend_minmax",              GL_EXT_blend_minmax_functions},
>> -  {"GL_EXT_blend_subtract",            NULL},
>> -  {"GL_EXT_fog_coord",                 GL_EXT_fog_coord_functions },
>> -  {"GL_EXT_gpu_program_parameters",     GL_EXT_gpu_program_parameters_functions},
>> -  {"GL_EXT_provoking_vertex",           GL_EXT_provoking_vertex_functions },
>> -  {"GL_EXT_secondary_color",           GL_EXT_secondary_color_functions},
>> -  {"GL_EXT_shadow_funcs",              NULL},
>> -  {"GL_EXT_stencil_two_side",          GL_EXT_stencil_two_side_functions},
>> -  {"GL_EXT_stencil_wrap",              NULL},
>> -  {"GL_EXT_texture_edge_clamp",                NULL},
>> -  {"GL_EXT_texture_env_combine",       NULL},
>> -  {"GL_EXT_texture_env_dot3",          NULL},
>> -  {"GL_EXT_texture_filter_anisotropic",        NULL},
>> -  {"GL_EXT_texture_lod_bias",          NULL},
>> -  {"GL_EXT_texture_mirror_clamp",      NULL},
>> -  {"GL_EXT_texture_rectangle",         NULL},
>> -  {"GL_EXT_texture_sRGB",              NULL},
>> -  {"GL_EXT_vertex_array_bgra",         NULL},
>> -  {"GL_ATI_separate_stencil",          GL_ATI_separate_stencil_functions},
>> -  {"GL_ATI_texture_env_combine3",      NULL},
>> -  {"GL_ATI_texture_mirror_once",       NULL},
>> -  {"GL_MESA_pack_invert",              NULL},
>> -  {"GL_MESA_ycbcr_texture",            NULL},
>> -  {"GL_NV_blend_square",               NULL},
>> -  {"GL_NV_vertex_program",             GL_NV_vertex_program_functions},
>> -#if FEATURE_OES_EGL_image
>> -  {"GL_OES_EGL_image",                  GL_OES_EGL_image_functions },
>> -#endif
>> -  {NULL,                               NULL}
>> -  /* *INDENT-ON* */
>> -};
>> -
>> -
>> -static const struct dri_extension mm_extensions[] = {
>> -  { "GL_EXT_framebuffer_blit", GL_EXT_framebuffer_blit_functions },
>> -  { "GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions },
>> -  { NULL, NULL }
>> -};
>> -
>> -/**
>> - * The GL 2.0 functions are needed to make display lists work with
>> - * functions added by GL_ATI_separate_stencil.
>> - */
>> -static const struct dri_extension gl_20_extension[] = {
>> -  {"GL_VERSION_2_0",                   GL_VERSION_2_0_functions },
>> -};
>>
>>  static const struct tnl_pipeline_stage *r300_pipeline[] = {
>>        /* Catch any t&l fallbacks
>> @@ -447,28 +363,76 @@ static void r300InitGLExtensions(struct gl_context *ctx)
>>  {
>>        r300ContextPtr r300 = R300_CONTEXT(ctx);
>>
>> -       driInitExtensions(ctx, card_extensions, GL_TRUE);
>> -       if (r300->radeon.radeonScreen->kernel_mm)
>> -               driInitExtensions(ctx, mm_extensions, GL_FALSE);
>> +       ctx->Extensions.ARB_depth_texture = true;
>> +       ctx->Extensions.ARB_fragment_program = true;
>> +       ctx->Extensions.ARB_multitexture = true;
>> +       ctx->Extensions.ARB_shadow = true;
>> +       ctx->Extensions.ARB_shadow_ambient = true;
>> +       ctx->Extensions.ARB_texture_border_clamp = true;
>> +       ctx->Extensions.ARB_texture_cube_map = true;
>> +       ctx->Extensions.ARB_texture_env_combine = true;
>> +       ctx->Extensions.ARB_texture_env_crossbar = true;
>> +       ctx->Extensions.ARB_texture_env_dot3 = true;
>> +       ctx->Extensions.ARB_texture_mirrored_repeat = true;
>> +       ctx->Extensions.ARB_vertex_program = true;
>> +       ctx->Extensions.EXT_blend_color = true;
>> +       ctx->Extensions.EXT_blend_equation_separate = true;
>> +       ctx->Extensions.EXT_blend_func_separate = true;
>> +       ctx->Extensions.EXT_blend_logic_op = true;
>> +       ctx->Extensions.EXT_blend_minmax = true;
>> +       ctx->Extensions.EXT_blend_subtract = true;
>> +       ctx->Extensions.EXT_fog_coord = true;
>> +       ctx->Extensions.EXT_gpu_program_parameters = true;
>> +       ctx->Extensions.EXT_point_parameters = true;
>> +       ctx->Extensions.EXT_provoking_vertex = true;
>> +       ctx->Extensions.EXT_secondary_color = true;
>> +       ctx->Extensions.EXT_shadow_funcs = true;
>> +       ctx->Extensions.EXT_stencil_two_side = true;
>> +       ctx->Extensions.EXT_stencil_wrap = true;
>> +       ctx->Extensions.EXT_texture_env_add = true;
>> +       ctx->Extensions.EXT_texture_env_combine = true;
>> +       ctx->Extensions.EXT_texture_env_dot3 = true;
>> +       ctx->Extensions.EXT_texture_filter_anisotropic = true;
>> +       ctx->Extensions.EXT_texture_lod_bias = true;
>> +       ctx->Extensions.EXT_texture_mirror_clamp = true;
>> +       ctx->Extensions.EXT_texture_sRGB = true;
>> +       ctx->Extensions.EXT_vertex_array_bgra = true;
>> +       ctx->Extensions.ATI_separate_stencil = true;
>> +       ctx->Extensions.ATI_texture_env_combine3 = true;
>> +       ctx->Extensions.ATI_texture_mirror_once = true;
>> +       ctx->Extensions.MESA_pack_invert = true;
>> +       ctx->Extensions.MESA_ycbcr_texture = true;
>> +       ctx->Extensions.NV_blend_square = true;
>> +       ctx->Extensions.NV_texture_rectangle = true;
>> +       ctx->Extensions.NV_vertex_program = true;
>> +#if FEATURE_OES_EGL_image
>> +       ctx->Extensions.OES_EGL_image = true;
>> +#endif
>> +       ctx->Extensions.SGIS_texture_edge_clamp = true;
>> +
>> +       if (r300->radeon.radeonScreen->kernel_mm) {
>> +               ctx->Extensions.EXT_framebuffer_blit = true;
>> +               ctx->Extensions.EXT_framebuffer_object = true;
>> +       }
>>
>>        if (r300->options.stencil_two_side_disabled)
>> -               _mesa_disable_extension(ctx, "GL_EXT_stencil_two_side");
>> +               ctx->Extensions.EXT_stencil_two_side = true;
> 
> This is wrong; it should be = false. Even better, up above in the big
> list, we could do:

Ah, good catch.

>   ctx->Extensions.EXT_stencil_two_side =
> !r300->options.stencil_two_side_disabled;
> 
> Or whatever equivalent idiom is accepted in Mesa.

I tried not to make changes like this because I wanted accidental
functional changes (like this one!) to be more noticeable.

>>
>>        if (r300->options.s3tc_force_disabled) {
>> -               _mesa_disable_extension(ctx, "GL_EXT_texture_compression_s3tc");
>> +               ctx->Extensions.EXT_texture_compression_s3tc = false;
>>        } else if (ctx->Mesa_DXTn || r300->options.s3tc_force_enabled) {
>> -               _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
>> -               _mesa_enable_extension(ctx, "GL_S3_s3tc");
>> +               ctx->Extensions.EXT_texture_compression_s3tc = true;
>> +               ctx->Extensions.S3_s3tc = true;
>>        }
> 
> Should we force off S3_s3tc when EXT_tc_s3tc is forced off?

Perhaps.  Since almost every DRI driver has some code like this, I was
thinking of refactoring it out to a function in
src/mesa/drivers/dri/common/utils.c.

>>
>> -       if (!r300->radeon.radeonScreen->drmSupportsOcclusionQueries) {
>> -               _mesa_disable_extension(ctx, "GL_ARB_occlusion_query");
>> -       }
>> -        if (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_R420)
>> -               _mesa_enable_extension(ctx, "GL_ARB_half_float_vertex");
>> +       ctx->Extensions.ARB_occlusion_query =
>> +               r300->radeon.radeonScreen->drmSupportsOcclusionQueries;
>> +
>> +       ctx->Extensions.ARB_half_float_vertex =
>> +               (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_R420);
>>
>> -       if (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515)
>> -               _mesa_enable_extension(ctx, "GL_EXT_packed_depth_stencil");
>> +       ctx->Extensions.EXT_packed_depth_stencil =
>> +               (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515);
>>  }
>>
>>  static void r300InitIoctlFuncs(struct dd_function_table *functions)
>> --
>> 1.7.4.4
> 
> FWIW,
> 
> Reviewed-by: Corbin Simpson <MostAwesomeDude at gmail.com>
> 
> Thanks for this! I'm so happy!
> ~ C.
> 

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