On 21/11/17 21:17, Eric Anholt wrote:
Miklós Máté <mtm...@gmail.com> writes:

These mainly check the state machine. Compiler checks will come later.

Signed-off-by: Miklós Máté <mtm...@gmail.com>
---
  tests/spec/ati_fragment_shader/render-constants.c  |  98 +++++++++++++++
  tests/spec/ati_fragment_shader/render-default.c    |  81 +++++++++++++
  tests/spec/ati_fragment_shader/render-fog.c        |  95 +++++++++++++++
  tests/spec/ati_fragment_shader/render-notexture.c  |  71 +++++++++++
  tests/spec/ati_fragment_shader/render-precedence.c | 118 ++++++++++++++++++
  tests/spec/ati_fragment_shader/render-sources.c    | 132 +++++++++++++++++++++
  tests/spec/ati_fragment_shader/render-textargets.c |  89 ++++++++++++++
  7 files changed, 684 insertions(+)
  create mode 100644 tests/spec/ati_fragment_shader/render-constants.c
  create mode 100644 tests/spec/ati_fragment_shader/render-default.c
  create mode 100644 tests/spec/ati_fragment_shader/render-fog.c
  create mode 100644 tests/spec/ati_fragment_shader/render-notexture.c
  create mode 100644 tests/spec/ati_fragment_shader/render-precedence.c
  create mode 100644 tests/spec/ati_fragment_shader/render-sources.c
  create mode 100644 tests/spec/ati_fragment_shader/render-textargets.c

diff --git a/tests/spec/ati_fragment_shader/render-constants.c 
b/tests/spec/ati_fragment_shader/render-constants.c
new file mode 100644
index 000000000..6e1e4fd8c
--- /dev/null
+++ b/tests/spec/ati_fragment_shader/render-constants.c
@@ -0,0 +1,98 @@
+/* TODO license header */
+
+/**
+ * Tests rendering with GL_ATI_fragment_shader:
+ * - using local and global constants
+ * - updating global constants
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+       config.supports_gl_compat_version = 10;
+       config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static const float color1[] = {0.4, 0.2, 0.6};
+static const float color2[] = {0.7, 0.2, 0.3};
+static const float color3[] = {0.1, 0.7, 0.2};
+static const float color4[] = {0.8, 0.1, 0.7};
+
+static float result1p3[] = {0.0, 0.0, 0.0};
+static float result2p3[] = {0.0, 0.0, 0.0};
+static float result4p3[] = {0.0, 0.0, 0.0};
+
+#define check_gl_error(err) if (!piglit_check_gl_error(err)) 
piglit_report_result(PIGLIT_FAIL)
+
+enum piglit_result
+piglit_display(void)
+{
+       bool pass = true;
+
+       piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+       glClearColor(1.0, 0.0, 0.0, 1.0);
+       glClear(GL_COLOR_BUFFER_BIT);
+
+       glEnable(GL_FRAGMENT_SHADER_ATI);
+       glSetFragmentShaderConstantATI(GL_CON_7_ATI, color2);
+       glSetFragmentShaderConstantATI(GL_CON_4_ATI, color3);
+       glBindFragmentShaderATI(13);
Could we get some top-level variables with names instead of "13" and
"42"?
OK, I'll do that.

+       piglit_draw_rect(0, 0, piglit_width/4, piglit_height); /* 2+3 */
In general, we ask for spaces around binary operators in the code, so

        piglit_draw_rect(0, 0, piglit_width / 4, piglit_height); /* 2+3 */

here and elsewhere in your tests.

+       glBindFragmentShaderATI(42);
+       piglit_draw_rect(piglit_width/4, 0, piglit_width/4, piglit_height); /* 
1+3 */
+       glBindFragmentShaderATI(13);
+       glSetFragmentShaderConstantATI(GL_CON_7_ATI, color4);
+       piglit_draw_rect(2*piglit_width/4, 0, piglit_width/4, piglit_height); 
/* 4+3 */
+       glBindFragmentShaderATI(42);
+       piglit_draw_rect(3*piglit_width/4, 0, piglit_width/4, piglit_height); 
/*1+3 */
+       glDisable(GL_FRAGMENT_SHADER_ATI);
+
+       pass = pass && piglit_probe_rect_rgb(0, 0, piglit_width/4, 
piglit_height, result2p3);
+       pass = pass && piglit_probe_rect_rgb(piglit_width/4, 0, piglit_width/4, 
piglit_height, result1p3);
+       pass = pass && piglit_probe_rect_rgb(2*piglit_width/4, 0, 
piglit_width/4, piglit_height, result4p3);
+       pass = pass && piglit_probe_rect_rgb(3*piglit_width/4, 0, 
piglit_width/4, piglit_height, result1p3);
+
+       piglit_present_results();
+
+       check_gl_error(GL_NO_ERROR);
+
+       return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+       unsigned u;
+
+       piglit_require_extension("GL_ATI_fragment_shader");
+
+       /* create identical shaders, but one of them has a local constant */
+
+       glBindFragmentShaderATI(13);
+       glBeginFragmentShaderATI();
+       glColorFragmentOp2ATI(GL_ADD_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
+                       GL_CON_7_ATI, GL_NONE, GL_NONE,
+                       GL_CON_4_ATI, GL_NONE, GL_NONE);
+       glEndFragmentShaderATI();
+
+       glBindFragmentShaderATI(42);
+       glBeginFragmentShaderATI();
+       glColorFragmentOp2ATI(GL_ADD_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
+                       GL_CON_7_ATI, GL_NONE, GL_NONE,
+                       GL_CON_4_ATI, GL_NONE, GL_NONE);
+       glSetFragmentShaderConstantATI(GL_CON_7_ATI, color1);
+       glEndFragmentShaderATI();
+
+       /* compute the expected results */
+
+       for (u=0; u<3; u++) {
+               result1p3[u] = color1[u]+color3[u];
+               result2p3[u] = color2[u]+color3[u];
+               result4p3[u] = color4[u]+color3[u];
+       }
+
+       check_gl_error(GL_NO_ERROR);
+}
diff --git a/tests/spec/ati_fragment_shader/render-default.c 
b/tests/spec/ati_fragment_shader/render-default.c
new file mode 100644
index 000000000..314a21810
--- /dev/null
+++ b/tests/spec/ati_fragment_shader/render-default.c
@@ -0,0 +1,81 @@
+/* TODO license header */
+
+/**
+ * Tests rendering with GL_ATI_fragment_shader: enable, disable, default 
fragment shader.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+       config.supports_gl_compat_version = 10;
+       config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static const float color[] = {0.2, 0.3, 0.8};
+static const float texcoord[] = {0.2, 0.7, 0.4};
+
+#define check_gl_error(err) if (!piglit_check_gl_error(err)) 
piglit_report_result(PIGLIT_FAIL)
+
+enum piglit_result
+piglit_display(void)
+{
+       bool pass = true;
+       GLuint tex;
+
+       piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+       glClearColor(1.0, 0.0, 0.0, 1.0);
+       glClear(GL_COLOR_BUFFER_BIT);
+
+       glColor3fv(color);
+       glTexCoord3fv(texcoord);
+
+       //TODO swrast: passtexcoord only works when there is a bound texture 
AND texturing is enabled
Could we use /* */ for consistency?
This comment is not meant to be final, just a reminder for me that this has to be fixed in swrast.

+       /*glEnable(GL_TEXTURE_2D);
+       glGenTextures(1, &tex);
+       glBindTexture(GL_TEXTURE_2D, tex);
+       glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, GL_RGB, GL_FLOAT, 
(void*)color);
+       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+       glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+       check_gl_error(GL_NO_ERROR);*/
+
+
+       glDisable(GL_FRAGMENT_SHADER_ATI);
+       piglit_draw_rect(0, 0, piglit_width/4, piglit_height);
+       glEnable(GL_FRAGMENT_SHADER_ATI);
+       piglit_draw_rect(piglit_width/4, 0, piglit_width/4, piglit_height);
+       glDisable(GL_FRAGMENT_SHADER_ATI);
+       piglit_draw_rect(2*piglit_width/4, 0, piglit_width/4, piglit_height);
+       glEnable(GL_FRAGMENT_SHADER_ATI);
+       piglit_draw_rect(3*piglit_width/4, 0, piglit_width/4, piglit_height);
+
+       pass = pass && piglit_probe_rect_rgb(0, 0, piglit_width/4, 
piglit_height, color);
+       pass = pass && piglit_probe_rect_rgb(piglit_width/4, 0, piglit_width/4, 
piglit_height, texcoord);
+       pass = pass && piglit_probe_rect_rgb(2*piglit_width/4, 0, 
piglit_width/4, piglit_height, color);
+       pass = pass && piglit_probe_rect_rgb(3*piglit_width/4, 0, 
piglit_width/4, piglit_height, texcoord);
+
+       piglit_present_results();
+
+       check_gl_error(GL_NO_ERROR);
+
+       return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+       piglit_require_extension("GL_ATI_fragment_shader");
+
+       /* create a default shader that does something different than 
fixed-function */
+       glBeginFragmentShaderATI();
+       glPassTexCoordATI(GL_REG_1_ATI, GL_TEXTURE0_ARB, GL_SWIZZLE_STR_ATI);
+       glColorFragmentOp1ATI(GL_MOV_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
+                       GL_REG_1_ATI, GL_NONE, GL_NONE);
+       glEndFragmentShaderATI();
+
+       check_gl_error(GL_NO_ERROR);
+}
diff --git a/tests/spec/ati_fragment_shader/render-fog.c 
b/tests/spec/ati_fragment_shader/render-fog.c
new file mode 100644
index 000000000..a7b72c502
--- /dev/null
+++ b/tests/spec/ati_fragment_shader/render-fog.c
@@ -0,0 +1,95 @@
+/* TODO license header */
+
+/**
+ * Tests rendering with GL_ATI_fragment_shader: using fog.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+       config.supports_gl_compat_version = 10;
+       config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static const float color1[] = {0.2, 0.3, 0.8};
+static const float color2[] = {0.9, 0.8, 0.3};
+
+static float resultLin[] = {0.0, 0.0, 0.0};
+static float resultExp[] = {0.0, 0.0, 0.0};
+static float resultEx2[] = {0.0, 0.0, 0.0};
+
+static const float z = 0.8;
+static const float dens = 0.4;
+
+#define check_gl_error(err) if (!piglit_check_gl_error(err)) 
piglit_report_result(PIGLIT_FAIL)
+
+enum piglit_result
+piglit_display(void)
+{
+       bool pass = true;
+
+       piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+       glClearColor(1.0, 0.0, 0.0, 1.0);
+       glClear(GL_COLOR_BUFFER_BIT);
+
+       glColor3fv(color2);
+
+       glFogfv(GL_FOG_COLOR, color1);
+       glFogf(GL_FOG_DENSITY, dens);
+       glFogf(GL_FOG_START, 0.0);
+       glFogf(GL_FOG_END, 1.0);
+       glHint(GL_FOG_HINT, GL_NICEST);
+
+       glEnable(GL_FRAGMENT_SHADER_ATI);
+       glEnable(GL_FOG);
+       glFogi(GL_FOG_MODE, GL_LINEAR);
+       piglit_draw_rect_z(z, 0, 0, piglit_width/4, piglit_height);
+       glFogi(GL_FOG_MODE, GL_EXP);
+       piglit_draw_rect_z(z, piglit_width/4, 0, piglit_width/4, piglit_height);
+       glFogi(GL_FOG_MODE, GL_EXP2);
+       piglit_draw_rect_z(z, 2*piglit_width/4, 0, piglit_width/4, 
piglit_height);
+       glDisable(GL_FOG);
+       piglit_draw_rect_z(z, 3*piglit_width/4, 0, piglit_width/4, 
piglit_height);
+       glDisable(GL_FRAGMENT_SHADER_ATI);
+
+       pass = pass && piglit_probe_rect_rgb(0, 0, piglit_width/4, 
piglit_height, resultLin);
+       pass = pass && piglit_probe_rect_rgb(piglit_width/4, 0, piglit_width/4, 
piglit_height, resultExp);
+       pass = pass && piglit_probe_rect_rgb(2*piglit_width/4, 0, 
piglit_width/4, piglit_height, resultEx2);
+       pass = pass && piglit_probe_rect_rgb(3*piglit_width/4, 0, 
piglit_width/4, piglit_height, color2);
+
+       piglit_present_results();
+
+       check_gl_error(GL_NO_ERROR);
+
+       return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+       unsigned u;
+       float f;
+
+       piglit_require_extension("GL_ATI_fragment_shader");
+
+       glBeginFragmentShaderATI();
+       glColorFragmentOp1ATI(GL_MOV_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
+                       GL_PRIMARY_COLOR_ARB, GL_NONE, GL_NONE);
+       glEndFragmentShaderATI();
+
+       /* compute the expected results */
+
+       for (u=0; u<3; u++) {
+               f = (1.0-z)/(1.0-0.0);
+               resultLin[u] = f*color2[u] + (1.0-f)*color1[u];
+               f = exp(-dens*z);
+               resultExp[u] = f*color2[u] + (1.0-f)*color1[u];
+               f = exp(-pow(dens*z,2.0));
+               resultEx2[u] = f*color2[u] + (1.0-f)*color1[u];
+       }
+
+       check_gl_error(GL_NO_ERROR);
+}
diff --git a/tests/spec/ati_fragment_shader/render-notexture.c 
b/tests/spec/ati_fragment_shader/render-notexture.c
new file mode 100644
index 000000000..2d9aefe09
--- /dev/null
+++ b/tests/spec/ati_fragment_shader/render-notexture.c
@@ -0,0 +1,71 @@
+/* TODO license header */
+
+/**
+ * Tests rendering with GL_ATI_fragment_shader: when no texture is bound
+ * - glPassTexCoordATI() should work as normal
+ * - glSampleMapATI() should return all zeros (technically this is undefined)
I don't think that would be undefined -- you'd have the default texture
object used, which would sample as zeroes.

Should I test the right hand side to be black then?

MM

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