gallium: added file_max[] array to tgsi_shader_info

Records the highest index of a declared register.

diff --git a/src/gallium/auxiliary/tgsi/util/tgsi_scan.c b/src/gallium/auxiliary/tgsi/util/tgsi_scan.c
index a973aeb..8c886ed 100644 (file)
--- a/src/gallium/auxiliary/tgsi/util/tgsi_scan.c
+++ b/src/gallium/auxiliary/tgsi/util/tgsi_scan.c
@@ -46,10 +46,12 @@ void
 tgsi_scan_shader(const struct tgsi_token *tokens,
                  struct tgsi_shader_info *info)
 {
-   uint procType;
+   uint procType, i;
    struct tgsi_parse_context parse;
 
    memset(info, 0, sizeof(*info));
+   for (i = 0; i < TGSI_FILE_COUNT; i++)
+      info->file_max[i] = -1;
 
    /**
     ** Setup to begin parsing input shader
@@ -97,6 +99,7 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
                /* only first 32 regs will appear in this bitfield */
                info->file_mask[file] |= (1 << i);
                info->file_count[file]++;
+               info->file_max[file] = MAX2(info->file_max[file], i);
 
                if (file == TGSI_FILE_INPUT) {
                   info->input_semantic_name[info->num_inputs]

diff --git a/src/gallium/auxiliary/tgsi/util/tgsi_scan.h b/src/gallium/auxiliary/tgsi/util/tgsi_scan.h
index d10d300..563ee90 100644 (file)
--- a/src/gallium/auxiliary/tgsi/util/tgsi_scan.h
+++ b/src/gallium/auxiliary/tgsi/util/tgsi_scan.h
@@ -51,6 +51,7 @@ struct tgsi_shader_info
 
    uint file_mask[TGSI_FILE_COUNT];  /**< bitmask of declared registers */
    uint file_count[TGSI_FILE_COUNT];  /**< number of declared registers */
+   int file_max[TGSI_FILE_COUNT];  /**< highest index of declared registers */
 
    uint immediate_count; /**< number of immediates declared */