diff options
| -rw-r--r-- | src/mesa/main/scissor.c | 93 | ||||
| -rw-r--r-- | src/mesa/main/scissor.h | 8 |
2 files changed, 101 insertions, 0 deletions
diff --git a/src/mesa/main/scissor.c b/src/mesa/main/scissor.c index 9caac2e4254..14c8e8a6cad 100644 --- a/src/mesa/main/scissor.c +++ b/src/mesa/main/scissor.c @@ -114,6 +114,99 @@ _mesa_set_scissor(struct gl_context *ctx, unsigned idx, ctx->Driver.Scissor(ctx); } +/** + * Define count scissor boxes starting at index. + * + * \param index index of first scissor records to set + * \param count number of scissor records to set + * \param x, y pointer to array of struct gl_scissor_rects + * + * \sa glScissorArrayv(). + * + * Verifies the parameters and call set_scissor_no_notify to do the work. + */ +void GLAPIENTRY +_mesa_ScissorArrayv(GLuint first, GLsizei count, const GLint *v) +{ + int i; + struct gl_scissor_rect *p = (struct gl_scissor_rect *) v; + GET_CURRENT_CONTEXT(ctx); + + if ((first + count) > ctx->Const.MaxViewports) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glScissorArrayv: first (%d) + count (%d) >= MaxViewports (%d)", + first, count, ctx->Const.MaxViewports); + return; + } + + /* Verify width & height */ + for (i = 0; i < count; i++) { + if (p[i].Width < 0 || p[i].Height < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glScissorArrayv: index (%d) width or height < 0 (%d, %d)", + i, p[i].Width, p[i].Height); + } + } + + for (i = 0; i < count; i++) + set_scissor_no_notify(ctx, i + first, + p[i].X, p[i].Y, p[i].Width, p[i].Height); + + if (ctx->Driver.Scissor) + ctx->Driver.Scissor(ctx); +} + +/** + * Define the scissor box. + * + * \param index index of scissor records to set + * \param x, y coordinates of the scissor box lower-left corner. + * \param width width of the scissor box. + * \param height height of the scissor box. + * + * Verifies the parameters call set_scissor_no_notify to do the work. + */ +static void +ScissorIndexed(GLuint index, GLint left, GLint bottom, + GLsizei width, GLsizei height, const char *function) +{ + GET_CURRENT_CONTEXT(ctx); + + if (MESA_VERBOSE & VERBOSE_API) + _mesa_debug(ctx, "%s(%d, %d, %d, %d, %d)\n", + function, index, left, bottom, width, height); + + if (index >= ctx->Const.MaxViewports) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s: index (%d) >= MaxViewports (%d)", + function, index, ctx->Const.MaxViewports); + return; + } + + if (width < 0 || height < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "%s: index (%d) width or height < 0 (%d, %d)", + function, index, width, height); + } + + set_scissor_no_notify(ctx, index, left, bottom, width, height); + + if (ctx->Driver.Scissor) + ctx->Driver.Scissor(ctx); +} + +void GLAPIENTRY +_mesa_ScissorIndexed(GLuint index, GLint left, GLint bottom, + GLsizei width, GLsizei height) +{ + ScissorIndexed(index, left, bottom, width, height, "glScissorIndexd"); +} + +void GLAPIENTRY +_mesa_ScissorIndexedv(GLuint index, const GLint *v) +{ + ScissorIndexed(index, v[0], v[1], v[2], v[3], "glScissorIndexdv"); +} /** * Initialize the context's scissor state. diff --git a/src/mesa/main/scissor.h b/src/mesa/main/scissor.h index 5726a006134..5f9a9945a99 100644 --- a/src/mesa/main/scissor.h +++ b/src/mesa/main/scissor.h @@ -34,6 +34,14 @@ struct gl_context; extern void GLAPIENTRY _mesa_Scissor( GLint x, GLint y, GLsizei width, GLsizei height ); +extern void GLAPIENTRY +_mesa_ScissorArrayv(GLuint first, GLsizei count, const GLint * v); + +extern void GLAPIENTRY +_mesa_ScissorIndexed(GLuint index, GLint left, GLint bottom, GLsizei width, GLsizei height); + +extern void GLAPIENTRY +_mesa_ScissorIndexedv(GLuint index, const GLint * v); extern void _mesa_set_scissor(struct gl_context *ctx, unsigned idx, |