diff options
| -rw-r--r-- | progs/tests/packedpixels.c | 67 |
1 files changed, 45 insertions, 22 deletions
diff --git a/progs/tests/packedpixels.c b/progs/tests/packedpixels.c index 1703b271cb..829e1618c7 100644 --- a/progs/tests/packedpixels.c +++ b/progs/tests/packedpixels.c @@ -107,7 +107,7 @@ static const struct name_format IntFormats[] = { #define NUM_INT_FORMATS (sizeof(IntFormats) / sizeof(IntFormats[0])) static GLuint CurFormat = 0; -static GLboolean Test3D = GL_FALSE; +static GLuint TexDims = 2; /* 1 or 2 or 3 */ @@ -172,7 +172,7 @@ MakeTexture(const struct pixel_format *format, GLenum intFormat, GLboolean swap) abort(); } - if (Test3D) { + if (TexDims == 3) { /* 4 x 4 x 4 texture, undefined data */ glTexImage3D(GL_TEXTURE_3D, 0, intFormat, 4, 4, 4, 0, format->format, format->type, NULL); @@ -186,10 +186,16 @@ MakeTexture(const struct pixel_format *format, GLenum intFormat, GLboolean swap) 4, 4, 1, /* size */ format->format, format->type, texBuffer); } - else { + else if (TexDims == 2) { + /* 4 x 4 texture */ glTexImage2D(GL_TEXTURE_2D, 0, intFormat, 4, 4, 0, format->format, format->type, texBuffer); } + else { + /* note: width=16 texture */ + glTexImage1D(GL_TEXTURE_1D, 0, intFormat, 16, 0, + format->format, format->type, texBuffer); + } if (glGetError()) { printf("GL Error for %s\n", format->name); @@ -208,6 +214,7 @@ Draw(void) int w = 350, h = 20; int i, swap; + glClearColor(0.2, 0.2, 0.2, 0.2); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); for (swap = 0; swap < 2; swap++) { @@ -217,21 +224,34 @@ Draw(void) MakeTexture(Formats + i, IntFormats[CurFormat].format, swap); - if (Test3D) - glEnable(GL_TEXTURE_3D); - else + if (TexDims == 1) + glEnable(GL_TEXTURE_1D); + else if (TexDims == 2) glEnable(GL_TEXTURE_2D); - glBegin(GL_POLYGON); - glTexCoord3f(0, 0, 0.5); glVertex2f(0, 0); - glTexCoord3f(1, 0, 0.5); glVertex2f(w, 0); - glTexCoord3f(1, 1, 0.5); glVertex2f(w, h); - glTexCoord3f(0, 1, 0.5); glVertex2f(0, h); - glEnd(); - - if (Test3D) - glDisable(GL_TEXTURE_3D); else - glDisable(GL_TEXTURE_2D); + glEnable(GL_TEXTURE_3D); + + if (TexDims == 1) { + glBegin(GL_POLYGON); + glTexCoord3f(0.0, 0, 0); glVertex2f(0, 0); + glTexCoord3f(0.0, 0, 0); glVertex2f(w, 0); + glTexCoord3f(1.0, 0, 0); glVertex2f(w, h); + glTexCoord3f(1.0, 0, 0); glVertex2f(0, h); + glEnd(); + } + else { + glBegin(GL_POLYGON); + glTexCoord3f(0, 0, 0.5); glVertex2f(0, 0); + glTexCoord3f(1, 0, 0.5); glVertex2f(w, 0); + glTexCoord3f(1, 1, 0.5); glVertex2f(w, h); + glTexCoord3f(0, 1, 0.5); glVertex2f(0, h); + glEnd(); + } + + glDisable(GL_TEXTURE_1D); + glDisable(GL_TEXTURE_2D); + glDisable(GL_TEXTURE_3D); + glColor3f(0, 0, 0); glRasterPos2i(8, 6); PrintString(Formats[i].name); @@ -260,10 +280,8 @@ Draw(void) glPushMatrix(); glTranslatef(2, (i + 2) * (h + 2), 0); glRasterPos2i(8, 6); - if (Test3D) - PrintString("Target [2/3]: GL_TEXTURE_3D"); - else - PrintString("Target [2/3]: GL_TEXTURE_2D"); + sprintf(s, "Target [1/2/3]: GL_TEXTURE_%uD", TexDims); + PrintString(s); glPopMatrix(); glutSwapBuffers(); @@ -299,11 +317,14 @@ Key(unsigned char key, int x, int y) if (CurFormat == NUM_INT_FORMATS) CurFormat = 0; break; + case '1': + TexDims = 1; + break; case '2': - Test3D = GL_FALSE; + TexDims = 2; break; case '3': - Test3D = GL_TRUE; + TexDims = 3; break; case 27: exit(0); @@ -318,6 +339,8 @@ Init(void) { printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); + glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |