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-rw-r--r--src/gallium/tests/graw/tex-swizzle.c226
1 files changed, 226 insertions, 0 deletions
diff --git a/src/gallium/tests/graw/tex-swizzle.c b/src/gallium/tests/graw/tex-swizzle.c
new file mode 100644
index 00000000000..80a96087e78
--- /dev/null
+++ b/src/gallium/tests/graw/tex-swizzle.c
@@ -0,0 +1,226 @@
+/* Test texture swizzles */
+
+#include <stdio.h>
+
+#include "graw_util.h"
+
+
+static struct graw_info info;
+
+static struct pipe_resource *texture = NULL;
+static struct pipe_sampler_view *sv = NULL;
+static void *sampler = NULL;
+
+static const int WIDTH = 300;
+static const int HEIGHT = 300;
+
+struct vertex {
+ float position[4];
+ float color[4];
+};
+
+static struct vertex vertices[] =
+{
+ { { 0.9, -0.9, 0.0, 1.0 },
+ { 1, 0, 0, 1 } },
+
+ { { 0.9, 0.9, 0.0, 1.0 },
+ { 1, 1, 0, 1 } },
+
+ { {-0.9, 0.9, 0.0, 1.0 },
+ { 0, 1, 0, 1 } },
+
+ { {-0.9, -0.9, 0.0, 1.0 },
+ { 0, 0, 0, 1 } },
+};
+
+
+static void set_vertices(void)
+{
+ struct pipe_vertex_element ve[2];
+ struct pipe_vertex_buffer vbuf;
+ void *handle;
+
+ memset(ve, 0, sizeof ve);
+
+ ve[0].src_offset = Offset(struct vertex, position);
+ ve[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+ ve[1].src_offset = Offset(struct vertex, color);
+ ve[1].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
+
+ handle = info.ctx->create_vertex_elements_state(info.ctx, 2, ve);
+ info.ctx->bind_vertex_elements_state(info.ctx, handle);
+
+
+ vbuf.stride = sizeof(struct vertex);
+ vbuf.buffer_offset = 0;
+ vbuf.buffer = info.screen->user_buffer_create(info.screen,
+ vertices,
+ sizeof(vertices),
+ PIPE_BIND_VERTEX_BUFFER);
+
+ info.ctx->set_vertex_buffers(info.ctx, 1, &vbuf);
+}
+
+static void set_vertex_shader(void)
+{
+ void *handle;
+ const char *text =
+ "VERT\n"
+ "DCL IN[0]\n"
+ "DCL IN[1]\n"
+ "DCL OUT[0], POSITION\n"
+ "DCL OUT[1], GENERIC[0]\n"
+ " 0: MOV OUT[1], IN[1]\n"
+ " 1: MOV OUT[0], IN[0]\n"
+ " 2: END\n";
+
+ handle = graw_parse_vertex_shader(info.ctx, text);
+ info.ctx->bind_vs_state(info.ctx, handle);
+}
+
+static void set_fragment_shader(void)
+{
+ void *handle;
+ const char *text =
+ "FRAG\n"
+ "DCL IN[0], GENERIC[0], PERSPECTIVE\n"
+ "DCL OUT[0], COLOR\n"
+ "DCL SAMP[0]\n"
+ " 0: TXP OUT[0], IN[0], SAMP[0], 2D\n"
+ " 2: END\n";
+
+ handle = graw_parse_fragment_shader(info.ctx, text);
+ info.ctx->bind_fs_state(info.ctx, handle);
+}
+
+
+static void draw(void)
+{
+ union pipe_color_union clear_color;
+
+ clear_color.f[0] = 0.5;
+ clear_color.f[1] = 0.5;
+ clear_color.f[2] = 0.5;
+ clear_color.f[3] = 1.0;
+
+ info.ctx->clear(info.ctx, PIPE_CLEAR_COLOR, &clear_color, 0, 0);
+ util_draw_arrays(info.ctx, PIPE_PRIM_QUADS, 0, 4);
+ info.ctx->flush(info.ctx, NULL);
+
+ graw_util_flush_front(&info);
+}
+
+
+
+static void
+init_tex(const unsigned swizzle[4])
+{
+#define SIZE 256
+ struct pipe_sampler_view sv_template;
+ ubyte tex2d[SIZE][SIZE][4];
+ int s, t;
+
+ for (s = 0; s < SIZE; s++) {
+ for (t = 0; t < SIZE; t++) {
+ tex2d[t][s][0] = 0; /*B*/
+ tex2d[t][s][1] = t; /*G*/
+ tex2d[t][s][2] = s; /*R*/
+ tex2d[t][s][3] = 1; /*A*/
+ }
+ }
+
+ texture = graw_util_create_tex2d(&info, SIZE, SIZE,
+ PIPE_FORMAT_B8G8R8A8_UNORM, tex2d);
+
+ memset(&sv_template, 0, sizeof sv_template);
+ sv_template.format = texture->format;
+ sv_template.texture = texture;
+ sv_template.swizzle_r = swizzle[0];
+ sv_template.swizzle_g = swizzle[1];
+ sv_template.swizzle_b = swizzle[2];
+ sv_template.swizzle_a = swizzle[3];
+ sv = info.ctx->create_sampler_view(info.ctx, texture, &sv_template);
+ if (sv == NULL)
+ exit(5);
+
+ info.ctx->set_fragment_sampler_views(info.ctx, 1, &sv);
+
+ sampler = graw_util_create_simple_sampler(&info,
+ PIPE_TEX_WRAP_REPEAT,
+ PIPE_TEX_FILTER_NEAREST);
+
+ info.ctx->bind_fragment_sampler_states(info.ctx, 1, &sampler);
+#undef SIZE
+}
+
+
+static void
+init(const unsigned swizzle[4])
+{
+ if (!graw_util_create_window(&info, WIDTH, HEIGHT, 1, FALSE))
+ exit(1);
+
+ graw_util_default_state(&info, FALSE);
+
+ graw_util_viewport(&info, 0, 0, WIDTH, HEIGHT, 30, 10000);
+
+ init_tex(swizzle);
+
+ set_vertices();
+ set_vertex_shader();
+ set_fragment_shader();
+}
+
+
+static unsigned
+char_to_swizzle(char c)
+{
+ switch (c) {
+ case 'r':
+ return PIPE_SWIZZLE_RED;
+ case 'g':
+ return PIPE_SWIZZLE_GREEN;
+ case 'b':
+ return PIPE_SWIZZLE_BLUE;
+ case 'a':
+ return PIPE_SWIZZLE_ALPHA;
+ case '0':
+ return PIPE_SWIZZLE_ZERO;
+ case '1':
+ return PIPE_SWIZZLE_ONE;
+ default:
+ return PIPE_SWIZZLE_RED;
+ }
+}
+
+
+int main(int argc, char *argv[])
+{
+ const char swizzle_names[] = "rgba01";
+ uint swizzle[4];
+ int i;
+
+ swizzle[0] = PIPE_SWIZZLE_RED;
+ swizzle[1] = PIPE_SWIZZLE_GREEN;
+ swizzle[2] = PIPE_SWIZZLE_BLUE;
+ swizzle[3] = PIPE_SWIZZLE_ALPHA;
+
+ for (i = 1; i < argc; i++) {
+ swizzle[i-1] = char_to_swizzle(argv[i][0]);
+ }
+
+ printf("Example:\n");
+ printf(" tex-swizzle r 0 g 1\n");
+ printf("Current swizzle = ");
+ for (i = 0; i < 4; i++) {
+ printf("%c", swizzle_names[swizzle[i]]);
+ }
+ printf("\n");
+
+ init(swizzle);
+
+ graw_set_display_func(draw);
+ graw_main_loop();
+ return 0;
+}